[Event "corr Tch-GER"]
[Site "corr Tch-GER"]
[Date "1991.??.??"]
[Round "?"]
[White "Sauter, G."]
[Black "Reiter, H."]
[Result "1/2-1/2"]
[PlyCount "46"]
[ECO "A40"]

1. d4 e6 2. c4 b6 3. d5 Nf6 4. Nc3 Bb4 5. Qb3 a5 6. Bg5 h6 7. Bxf6 Qxf6 8. Rc1
Bb7 9. a3 Bxc3+ 10. Rxc3 Na6 11. e4 Nc5 12. Qc2 Qd4 13. Re3 O-O 14. Nf3 Qf6 15.
Be2 e5 16. O-O d6 17. b4 Nd7 18. Qb2 axb4 19. axb4 Qe7 20. Nd2 f5 21. exf5 Rxf5
22. Bg4 Rf4 23. Be6+ Kh8 1/2-1/2 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "9"]

1. d4 Nf6 2. c4 b6 3. d5 e6 4. Nc3 Bb4 5. Qb3  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "5"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. Nc3 Bb4 5. Qb3) *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5; 3. f3; 3. Bg5) 3... Bb7  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5; 3. f3; 3. Bg5; 3. g3; 3. e3; 3. Bf4;
3. a3) 3... Bb7  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3; 3.
Bg5; 3. g3; 3. e3; 3. Bf4; 3. a3) 3... Bb7  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3; 3. Bg5; 3. g3; 3.
e3; 3. Bf4; 3. a3) 3... Bb7  *

[Event "Netherlands ch"]
[Site "Netherlands ch"]
[Date "1978.??.??"]
[Round "?"]
[White "Hofland"]
[Black "Ree"]
[Result "1/2-1/2"]
[PlyCount "43"]
[ECO "A40"]

1. c4 b6 2. d4 e6 3. d5 Nf6 4. a3 Ba6 5. e3 exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 8.
Nc3 O-O 9. Nge2 Re8 10. f3 c6 11. e4 cxd5 12. Nxd5 Nc6 13. Bg5 Nxd5 14. Qxd5
Be7 15. Bxe7 Nxe7 16. Qd6 Rc8 17. Rd1 Rc2 18. Qxd7 Qxd7 19. Rxd7 f5 20. Kf2
fxe4 21. fxe4 Nc6 22. Rc1 1/2-1/2 

[Event "Chianciano ch"]
[Site "Chianciano ch"]
[Date "1985.??.??"]
[Round "?"]
[White "Sanna"]
[Black "Ventura"]
[Result "1-0"]
[PlyCount "91"]
[ECO "A40"]

1. d4 e6 2. c4 b6 3. d5 Nf6 4. a3 Ba6 5. e3 exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 8.
Nc3 O-O 9. Nf3 Qe7 10. g3 a5 11. b3 Na6 12. Bb2 Nc5 13. Kg2 Rae8 14. Rc1 Ng4
15. Re1 Qf6 16. Na4 Qf5 17. Nxc5 Bxc5 18. h3 Nf6 19. Bxf6 Qxf6 20. a4 Re5 21.
Nd2 Re7 22. Nc4 Rfe8 23. Qd3 d6 24. Re2 Qg6 25. Qxg6 hxg6 26. g4 f6 27. Kf3 Kf7
28. Rh1 Rh8 29. h4 Ree8 30. Ree1 Rh7 31. Rh3 Rhh8 32. h5 gxh5 33. gxh5 Rb8 34.
Ra1 Rh6 35. Rg1 Rbh8 36. Rgh1 Rb8 37. Rh4 Rbh8 38. Nb2 Re8 39. Nd3 Rc8 40. Rc1
Rch8 41. Nf4 f5 42. Rh3 Re8 43. Rg3 Re7 44. Rcg1 Kg8 45. Ne6 Rxh5 46. Nxg7 1-0 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"}; 3. Bg5; 3. g3; 3. e3; 3. Bf4; 3. a3) 3... Bb7  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3; 3. e3; 3. Bf4; 3. a3) 3... Bb7  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "6"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line
of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4; 3.
a3) 3... Bb7  *

[Event "Bad Kissingen"]
[Site "Bad Kissingen"]
[Date "1928.??.??"]
[Round "7"]
[White "Nimzowitsch, Aaron"]
[Black "Marshall, Frank J"]
[Result "0-1"]
[PlyCount "50"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Bg5 e6 5. Qc2 h6 6. Bh4 Be7 7. e4 O-O 8. e5
Nd5 9. Bg3 Nb4 10. Qb3 d5 11. exd6 Bxd6 12. O-O-O N8c6 13. Bxd6 Qxd6 14. a3
Nxd4 15. Rxd4 Qxd4 16. axb4 Qxf2 17. Qd1 Rfd8 18. Qe2 Qf4+ 19. Kc2 a5 20. bxa5
Rxa5 21. Nf3 Ra1 22. Kb3 b5 23. Qe5 bxc4+ 24. Kb4 Qc1 25. Nb5 c5+ 0-1 

[Event "Sandefjord MGP"]
[Site "Sandefjord"]
[Date "2002.03.04"]
[Round "4"]
[White "Nilson, Bjorn Lund"]
[Black "Kaupang, Eilert A"]
[Result "0-1"]
[PlyCount "90"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 e6 5. Bg5 h6 6. Bh4 Be7 7. f3 g5 8. Bg3 d6
9. e4 Nh5 10. Bf2 Nd7 11. Nge2 e5 12. O-O-O Bf6 13. d5 Qe7 14. g4 Nf4 15. Ng3
Nf8 16. Nf5 Qd8 17. Kb1 Bc8 18. Qa4+ Bd7 19. Qa3 Bxf5 20. exf5 Nd7 21. Ne4 Be7
22. Qc3 Bf6 23. h4 Qe7 24. b4 Kf8 25. Rd2 Kg7 26. Be1 a5 27. a3 Ra7 28. hxg5
Bxg5 29. Nxg5 hxg5 30. Rxh8 Kxh8 31. Rh2+ Kg7 32. Bd2 axb4 33. axb4 f6 34. Qe3
Ra8 35. Qg1 Rh8 36. Rxh8 Kxh8 37. Qh2+ Kg7 38. Kc2 Qe8 39. Kb3 Qa8 40. Bc3 b5
41. cxb5 Qxd5+ 42. Bc4 Qxf3 43. Qc2 Nb6 44. Be6 Nxe6 45. fxe6 Qd5+ 0-1 

[Event "FRA-chT2S 0203"]
[Site "France"]
[Date "2003.03.16"]
[Round "9"]
[White "Winants, Luc"]
[Black "Mancini, Mario"]
[Result "0-1"]
[PlyCount "138"]
[WhiteElo "2504"]
[BlackElo "2301"]
[ECO "A50"]

1. d4 Nf6 2. Bg5 b6 3. c4 Bb7 4. Nc3 e6 5. e3 h6 6. Bh4 Be7 7. Qc2 O-O 8. Nf3
c5 9. dxc5 bxc5 10. Rd1 Qa5 11. Be2 Rd8 12. O-O d6 13. Rd2 Nbd7 14. Rfd1 Rac8
15. Bg3 d5 16. h3 dxc4 17. Bxc4 Bxf3 18. gxf3 Nb6 19. Be2 Rxd2 20. Rxd2 c4 21.
Rd1 Bb4 22. e4 Nh5 23. Bh2 Qg5+ 24. Kh1 Qh4 25. Bf1 Nf4 26. Bg3 Qh5 27. Kh2
Qxf3 28. Qd2 Ng6 29. Bg2 Qh5 30. Qe2 Qg5 31. h4 Nxh4 32. f4 Qe7 33. Bh3 Rd8 34.
Rf1 Rd3 35. a3 Qd8 36. Nb1 Be7 37. Be1 Ng6 38. Bd2 Bd6 39. e5 Qh4 40. Rf3 Bc5
41. Nc3 Qd8 42. Ne4 Qd4 43. Rf1 Be7 44. Bc3 Qe3 45. Qxe3 Rxe3 46. Nd6 Bh4 47.
f5 Nf4 48. Bg4 Bg3+ 49. Kh1 Rd3 50. fxe6 fxe6 51. Ne4 Nbd5 52. Nc5 Ne3 53. Nxd3
cxd3 54. Rf3 Nxg4 55. Rxg3 Nf2+ 56. Kh2 Ne2 57. Rg2 Ne4 58. Ba5 g5 59. Kh1 h5
60. Rh2 h4 61. Kg2 d2 62. Rh1 h3+ 63. Kf3 g4+ 64. Kxg4 Nf2+ 65. Kf3 d1=Q 66.
Rxd1 Nxd1 67. b4 Ne3 68. Kxe3 h2 69. Kxe2 h1=Q 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "16"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 e6 5. Qc2
h6 6. Bh4 Be7 7. e4 (7. e3) 7... O-O 8. Nf3 c5 {Winants - Mancini, France 2003}
 *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 e6 5. Qc2
h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen
1928}  *

[Event "Budapest"]
[Site "Budapest"]
[Date "1921.??.??"]
[Round "?"]
[White "Euwe Max"]
[Black "Alekhine Alexander"]
[Result "1/2-1/2"]
[PlyCount "61"]
[ECO "A50"]
[Annotator "Fritz 5.00 (5s)"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qh4 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 12. Ng5 Bxg2 13. Rg1 c6 14.
Rxg2 cxb5 15. e6 fxe6 16. Nxe6 Kf7 17. Nc7 Rc8 18. Nxb5 a6 19. Nd4 Rxc3 20. Bb2
Rc5 21. Rd1 Rd5 22. Rd3 Ne5 23. Rb3 Bb4+ 24. Kf1 Bc5 25. Nf5 Rhd8 26. Rxg7+ Kf6
27. Rf3 Rd2 28. Nd6+ Ke6 29. Bxe5 Bxd6 30. Bxd6 R8xd6 31. Ra3 1/2-1/2 

[Event "Biel-C"]
[Site "Biel"]
[Date "1990.??.??"]
[Round "8"]
[White "Danner, Georg"]
[Black "Horn, Pascal"]
[Result "1-0"]
[PlyCount "77"]
[WhiteElo "2330"]
[BlackElo "2320"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qh4 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 12. O-O O-O-O 13. Ng5 Bg6 14.
e6 fxe6 15. Nxe6 Re8 16. Nxf8 Rhxf8 17. Rd1 Bf5 18. Be3 Re5 19. Ba6+ Kb8 20.
Bd4 Ra5 21. Bf1 Nf6 22. Re1 Re8 23. Bc4 Bd7 24. Rxe8+ Nxe8 25. Re1 Nd6 26. Bg8
Bc6 27. Bxh7 Rxa2 28. Bxg7 a5 29. h4 Ra4 30. Bd4 Nb5 31. Bc2 Ra2 32. h5 Rxc2
33. h6 Rc1 34. Rxc1 Be4 35. Re1 Bd3 36. Re3 Bb1 37. Be5 Na3 38. Rh3 Nc4 39. Bf4
1-0 

[Event "Moscow"]
[Site "Moscow"]
[Date "1975.??.??"]
[Round "?"]
[White "Petrosian, Tigran"]
[Black "Planinc, Albin"]
[Result "1/2-1/2"]
[PlyCount "56"]
[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. d4 Nf6 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. Be2 cxd5 10. cxd5 Na6 11. O-O Re8 12. Bg5 h6 13. Bh4 Rc8 14. Nd4 Nc5 15.
Nf5 Bf8 16. b4 Nce4 17. Nxe4 Rxe4 18. Bd3 Re8 19. Ne3 g5 20. Bg3 Nxd5 21. Nxd5
Bxd5 22. Bh7+ Kxh7 23. Qxd5 Qe7 24. Rad1 a5 25. bxa5 bxa5 26. Qxa5 Qxa3 27.
Qf5+ Kg8 28. Rxd7 Qb3 1/2-1/2 

[Event "03, Polanica Zdroj (03"]
[Site "Polanica Zdroj)"]
[Date "1979.??.??"]
[Round "?"]
[White "Knaak Rainer"]
[Black "Planinc Albin"]
[Result "1/2-1/2"]
[PlyCount "83"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. Be2 cxd5 10. cxd5 Na6 11. Bg5 Re8 12. O-O h6 13. Bh4 Nc5 14. Nd4 Be5 15.
Bc4 Qb8 16. f4 Bxd4+ 17. Qxd4 Nfe4 18. b4 Nxc3 19. bxc5 Ne4 20. c6 dxc6 21.
dxc6 Bxc6 22. Bxf7+ Kxf7 23. Qc4+ Kf8 24. Qxc6 Qc8 25. Qg6 Qe6 26. Qh7 Qg8 27.
Qf5+ Qf7 28. Qg4 Rac8 29. Rad1 h5 30. Qh3 Rc3 31. Rf3 Qb3 32. Qf5+ Kg8 33. Re1
Rxf3 34. Qxh5 Rf8 35. gxf3 Nd2 36. Kg2 Qf7 37. Qxf7+ Rxf7 38. Kg3 Rc7 39. Re2
Nb1 40. Be7 Kf7 41. Bd6 Rd7 42. Rb2 1/2-1/2 

[Event "Denmark"]
[Site "Denmark"]
[Date "1988.??.??"]
[Round "?"]
[White "Andreasen, Per"]
[Black "Pedersen, Erik"]
[Result "0-1"]
[PlyCount "50"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. Be2 cxd5 10. cxd5 Na6 11. O-O Re8 12. Bg5 Nc5 13. Nd4 Be5 14. Ra2 Qb8 15.
f4 Bxd4+ 16. Qxd4 Nxd5 17. Nxd5 Rxe2 18. Rf3 Qe8 19. Bh6 Re1+ 20. Kf2 Qe2+ 21.
Kg3 Ne4+ 22. Kh3 f6 23. Ne7+ Kh8 24. Qxd7 Nf2+ 25. Rxf2 Qxe7 0-1 

[Event "EU/M/1163"]
[Site "corr ICCF"]
[Date "1996.??.??"]
[Round "?"]
[White "Gatto, Claudio (ITA)"]
[Black "Braun, Joerg (CAN)"]
[Result "1/2-1/2"]
[PlyCount "42"]
[ECO "A50"]

1. d4 b6 2. c4 Bb7 3. d5 e6 4. a3 Nf6 5. Nc3 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. Be2 cxd5 10. cxd5 Re8 11. O-O h6 12. Nd4 Be5 13. Bf3 Ba6 14. d6 Nc6 15.
Nxc6 dxc6 16. Bxc6 Bxf1 17. Kxf1 Qxd6 18. Qxd6 Bxd6 19. Bxa8 Rxa8 20. Bd2 Rd8
21. Be1 Be5 1/2-1/2 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+
Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15; 4. d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 O-O
7. e4 exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6) 4... e6 5. Qc2 h6 6. Bh4 Be7 7.
e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5
Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "Paris"]
[Site "Paris"]
[Date "1989.??.??"]
[Round "?"]
[White "Plachetka, Jan"]
[Black "Prie, Eric"]
[Result "1-0"]
[PlyCount "81"]
[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. d4 e6 4. a3 Nf6 5. d5 Bd6 6. e4 Be5 7. Bd3 Bxc3+ 8. bxc3
Qe7 9. Ne2 Na6 10. O-O Nc5 11. f3 Ba6 12. Bc2 Bxc4 13. Re1 e5 14. Ng3 g6 15.
Bh6 O-O-O 16. a4 a5 17. d6 cxd6 18. Rb1 Kc7 19. Qd2 Ne8 20. Nf1 f6 21. Ne3 Qe6
22. Rb2 Rb8 23. Reb1 g5 24. g4 Rg8 25. h4 Rg6 26. Nf5 d5 27. Bf8 d6 28. Rd1 Rg8
29. exd5 Qf7 30. Bh6 gxh4 31. Be3 Rh8 32. Nh6 Qd7 33. Bf5 Qxa4 34. Bxc5 bxc5
35. Rxb8 Kxb8 36. Rb1+ Bb3 37. c4 Qxc4 38. Qxa5 Qd4+ 39. Kg2 c4 40. Ra1 Ng7 41.
Qb5+ 1-0 

[Event "Groningen"]
[Site "Groningen"]
[Date "1994.??.??"]
[Round "3"]
[White "De Boer, Sybolt"]
[Black "Zak, Uriel"]
[Result "0-1"]
[PlyCount "112"]
[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. d5 e6 4. a3 Nf6 5. Nc3 Bd6 6. e4 Be5 7. Bd3 c6 8. Nf3
Bxc3+ 9. bxc3 cxd5 10. cxd5 exd5 11. e5 Ne4 12. c4 Qc7 13. O-O dxc4 14. Qc2 Qc6
15. Qxc4 Qxc4 16. Bxc4 Nc6 17. Bb2 Na5 18. Ba2 Rc8 19. Nd4 O-O 20. Rac1 Nd2 21.
e6 dxe6 22. Nxe6 Nxf1 23. Nxf8 Kxf8 24. Kxf1 Ba6+ 25. Ke1 Bc4 26. Bb1 Re8+ 27.
Kd1 Bb3+ 28. Kd2 Bd5 29. Rd1 Nc4+ 30. Kc3 Nxb2 31. Rxd5 Na4+ 32. Kb4 Nc5 33.
Rd2 Re1 34. Ba2 Ke7 35. Kb5 Rc1 36. a4 g6 37. h4 Rc3 38. a5 bxa5 39. h5 a4 40.
Rd5 Rc2 41. hxg6 hxg6 42. Bb1 Rb2+ 43. Kxc5 Rxb1 44. Rd2 a3 45. Ra2 Rb2 46.
Rxa3 Rxf2 47. g3 a5 48. Kd4 Rf5 49. Ke4 Rb5 50. Kf3 Kf6 51. g4 Kg5 52. Kg3 Rc5
53. Kh3 Kf4 54. Ra4+ Ke3 55. Kg3 Kd3 56. Rf4 Rc7 0-1 

[Event "Geneve-B"]
[Site "Geneve"]
[Date "1988.??.??"]
[Round "?"]
[White "Arlandi, Ennio"]
[Black "Horn, Pascal"]
[Result "0-1"]
[PlyCount "66"]
[WhiteElo "2405"]
[BlackElo "2345"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. e4 Be5 7. Qc2 Qe7 8. Be2
Na6 9. f3 c6 10. dxc6 dxc6 11. Nh3 Qd6 12. g3 Bd4 13. b4 e5 14. Bb2 Nc7 15. Nf2
Ne6 16. Nd3 Be3 17. Nd1 Nd4 18. Qc3 Bh6 19. Nxe5 c5 20. bxc5 bxc5 21. Nd3 Nxe4
22. fxe4 Bxe4 23. Rf1 O-O-O 24. Nf4 Rhe8 25. Rf2 g5 26. Nd5 Bxd5 27. cxd5 Qxd5
28. Qd3 Rxe2+ 29. Rxe2 Nf3+ 30. Qxf3 Qxf3 31. Nc3 Bg7 32. Rc1 Qh1+ 33. Kf2 Bd4+
0-1 

[Event "Bayern-chI Bank Hofmann 1st"]
[Site "Bad Wiessee"]
[Date "1997.11.22"]
[Round "8"]
[White "Gabriel, Josef"]
[Black "Schwartz, Gerhard"]
[Result "1-0"]
[PlyCount "93"]
[WhiteElo "2160"]
[ECO "A50"]

1. c4 e6 2. d4 b6 3. Nc3 Bb7 4. a3 Nf6 5. d5 Bd6 6. e4 Be5 7. Nge2 O-O 8. g3
Re8 9. Bg2 Bxc3+ 10. Nxc3 exd5 11. cxd5 Nxe4 12. Nxe4 f5 13. O-O fxe4 14. Re1
Na6 15. Qh5 Qf6 16. Rxe4 Rxe4 17. Bxe4 g6 18. Qf3 Qe7 19. Bd2 Rf8 20. Qg2 Nc5
21. Bf3 Qf6 22. Be2 Qxb2 23. Rd1 Nb3 24. Qe4 Nxd2 25. Qe3 Bxd5 26. Rxd2 Qc1+
27. Bd1 Be6 28. Kg2 Qc5 29. Rd4 Qc6+ 30. Kg1 d5 31. h4 Bf7 32. h5 gxh5 33. Bf3
Qd6 34. Bxd5 Bxd5 35. Qg5+ Kh8 36. Rxd5 Qf6 37. Qd2 h4 38. g4 Qg7 39. g5 h6 40.
f4 Qa1+ 41. Kh2 Qxa3 42. Rd7 Rg8 43. Qe2 Qc3 44. Rd3 Qg7 45. Qg4 Qg6 46. Rd7
hxg5 47. f5 1-0 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+
Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15; 4. d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6.
e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 Nh5 9. Bg3 Nxg3 10. hxg3
f5 $5) 7... exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6) 4... e6 5. Qc2 h6 6. Bh4
Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7...
O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "EU-chT (Men)"]
[Site "Batumi"]
[Date "1999.12.07"]
[Round "9"]
[White "Marin, Mihail"]
[Black "Bauer, Christian"]
[Result "1/2-1/2"]
[PlyCount "29"]
[WhiteElo "2548"]
[BlackElo "2480"]
[ECO "A50"]

1. c4 b6 2. d4 Bb7 3. d5 e6 4. a3 exd5 5. cxd5 Nf6 6. Nc3 Bd6 7. Nf3 O-O 8. g3
Na6 9. Bg2 c6 10. O-O cxd5 11. Nh4 Nc7 12. e4 Be5 13. Nxd5 Ncxd5 14. exd5 Re8
15. Nf5 1/2-1/2 

[Event "WC.1999.F.00001"]
[Site "IECG Email"]
[Date "1999.??.??"]
[Round "?"]
[White "Rust, Keith"]
[Black "Duriez, Jean Luc"]
[Result "1/2-1/2"]
[PlyCount "39"]
[WhiteElo "2275"]
[BlackElo "2250"]
[ECO "A50"]

1. c4 e6 2. Nc3 b6 3. d4 Bb7 4. a3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. g3 exd5 8. cxd5
Na6 9. Bg2 c6 10. dxc6 dxc6 11. O-O h6 12. Nd4 Qd7 13. e4 Be5 14. Nf5 Rad8 15.
Be3 Qe6 16. Qe2 c5 17. f3 Nb8 18. Qc2 Nc6 19. Rfd1 Ne7 20. Nxe7+ 1/2-1/2 

[Event "Ruta de Europa op 1st"]
[Site "Subijana de Alava"]
[Date "2001.04.24"]
[Round "2"]
[White "Garrido Legarreta, Jose Javier"]
[Black "Varas Gonzalez, Carlos"]
[Result "0-1"]
[PlyCount "97"]
[BlackElo "2328"]
[ECO "A50"]

1. c4 b6 2. Nc3 Bb7 3. d4 e6 4. a3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. g3 exd5 8. cxd5
c6 9. Bg2 Nxd5 10. Nxd5 cxd5 11. Nd4 Qf6 12. O-O Na6 13. Be3 Nc5 14. Nb5 Be5
15. Bd4 Bc6 16. Bxe5 Qxe5 17. Nd4 Rac8 18. e3 Bb7 19. Re1 Ba6 20. Bf1 Bxf1 21.
Kxf1 Ne6 22. Re2 Qe4 23. Kg1 Rc4 24. Rd2 Rfc8 25. Nf3 Rc2 26. Rxd5 Rxb2 27.
Rxd7 h6 28. Qd5 Qxd5 29. Rxd5 Rcc2 30. Rf1 Rc3 31. Ra1 Rbb3 32. a4 Ra3 33. Rdd1
Nc5 34. a5 Rxa1 35. Rxa1 Nb3 36. Rd1 Nxa5 37. Rd8+ Kh7 38. Rd7 Nc6 39. Rc7 Nd4
40. Rxf7 Nxf3+ 41. Rxf3 a5 42. Rf8 a4 43. Ra8 b5 44. e4 b4 45. e5 Kg6 46. Ra6+
Kf7 47. Kg2 Rb3 48. f4 Rc3 49. Rb6 0-1 

[Event "Harkany Tenkes Cup 26th"]
[Site "Harkany"]
[Date "2002.11.15"]
[Round "2"]
[White "Kragelj, Igor"]
[Black "Simakov, Vladislav"]
[Result "1-0"]
[PlyCount "71"]
[WhiteElo "2239"]
[ECO "A50"]

1. d4 e6 2. c4 b6 3. a3 Bb7 4. Nc3 Nf6 5. d5 Bd6 6. Nf3 exd5 7. cxd5 O-O 8. g3
c6 9. Bg2 cxd5 10. Nh4 Qc7 11. Bg5 Be5 12. Rc1 Qd6 13. Bxf6 Qxf6 14. Bxd5 Nc6
15. O-O Rac8 16. Qa4 Rfe8 17. e3 a6 18. Rfd1 b5 19. Qg4 Bxc3 20. Rxc3 Ne5 21.
Rxc8 Rxc8 22. Qf5 Qxf5 23. Nxf5 Bxd5 24. Ne7+ Kf8 25. Nxc8 Nf3+ 26. Kf1 Nxh2+
27. Ke1 Nf3+ 28. Ke2 Bc6 29. Na7 Be4 30. Rxd7 Ne5 31. Rc7 Bf3+ 32. Kd2 Be4 33.
Kc3 Nd3 34. f3 Bg6 35. Nc6 Ne1 36. Rc8# 1-0 

[Event "Oberliga Ost-B 0607"]
[Site "Germany"]
[Date "2006.11.18"]
[Round "2"]
[White "Walter, Stefan"]
[Black "Zunker, Reinhard"]
[Result "1-0"]
[PlyCount "147"]
[WhiteElo "2198"]
[BlackElo "2201"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 exd5 6. cxd5 Bd6 7. Nf3 O-O 8. g3
Re8 9. Bg2 Na6 10. O-O Nc5 11. b4 Nce4 12. Nxe4 Nxe4 13. Bb2 Nf6 14. Nd2 Ba6
15. Re1 Ng4 16. Rc1 Be5 17. Bxe5 Nxe5 18. f4 Ng6 19. e4 d6 20. Nf3 Bb5 21. Nd4
Bd7 22. Qc2 Qf6 23. Qd3 Rec8 24. Rc3 a5 25. b5 a4 26. Rec1 Ra7 27. Nf3 Qd8 28.
Nd4 Qf6 29. Nf3 Qd8 30. e5 Qe8 31. Qd4 Ne7 32. Ng5 Nf5 33. Qe4 h6 34. e6 hxg5
35. Qxf5 fxe6 36. dxe6 Bxe6 37. Qxg5 Bf7 38. Kf2 Qe6 39. Re1 Qf6 40. Qxf6 gxf6
41. Rec1 Be8 42. Bh3 Rb8 43. Rxc7 Rxc7 44. Rxc7 Bxb5 45. Bd7 Bxd7 46. Rxd7 b5
47. Rxd6 Kf7 48. Ra6 Rc8 49. Rb6 Rc2+ 50. Kf3 Rxh2 51. Rxb5 Ra2 52. Ke4 Rxa3
53. g4 Kg6 54. Rb6 Rb3 55. Ra6 Rb4+ 56. Kf3 Kg7 57. Ra7+ Kh6 58. Kg3 Rc4 59. f5
Rb4 60. Kh4 Rc4 61. Ra6 Kg7 62. Kh5 Rb4 63. Ra7+ Kf8 64. g5 fxg5 65. f6 Rf4 66.
Kg6 Ke8 67. Kg7 g4 68. f7+ Rxf7+ 69. Rxf7 g3 70. Rf3 Kd7 71. Rxg3 Kc6 72. Rg5
Kb6 73. Kh6 a3 74. Rg3 1-0 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+
Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15; 4. d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6.
e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 Nh5 9. Bg3 Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6) 4... e6 5. Qc2 h6 6.
Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003})
7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928} 
*

[Event "Belgium-Latvia 1992/94"]
[Site "corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Bossuyt, Herman"]
[Black "Viksna, Talis (LAT)"]
[Result "1/2-1/2"]
[PlyCount "83"]
[ECO "A50"]

1. c4 b6 2. d4 e6 3. a3 Bb7 4. d5 Nf6 5. Nc3 Bd6 6. Nf3 O-O 7. e3 c6 8. dxc6
dxc6 9. Be2 Qc7 10. O-O Nbd7 11. Qc2 e5 12. Rd1 Rad8 13. b4 Rfe8 14. e4 Nf8 15.
Bb2 Ne6 16. Rd2 Nd4 17. Qd1 c5 18. bxc5 bxc5 19. Nd5 Bxd5 20. exd5 Nxe2+ 21.
Rxe2 e4 22. Nd2 Bxh2+ 23. Kf1 Be5 24. Bxe5 Qxe5 25. Kg1 Ng4 26. Nf1 Rd6 27. Qa4
Rh6 28. Rae1 f5 29. Qxa7 Qf6 30. Qd7 Rd8 31. Qe6+ Qxe6 32. dxe6 Rxe6 33. f3
exf3 34. gxf3 Rxe2 35. Rxe2 Nf6 36. Re5 g6 37. Rxc5 Ra8 38. Rc7 Rxa3 39. Kf2
Rd3 40. Ke2 Rd7 41. Rc8+ Kf7 42. Kf2 1/2-1/2 

[Event "Zagreb"]
[Site "Zagreb"]
[Date "1972.??.??"]
[Round "7"]
[White "Bertok, Mario"]
[Black "Planinec, Albin"]
[Result "1/2-1/2"]
[PlyCount "70"]
[ECO "A50"]

1. c4 b6 2. d4 Nf6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 12. Bg5 a6 13. Bh4 Rfe8 14. Bg3 Bxg3
15. hxg3 Re7 16. Qc2 Rae8 17. Rad1 b5 18. Nd4 c5 19. Nf5 Rxe2 20. Nxe2 Be4 21.
Nh6+ gxh6 22. Qc1 bxc4 23. Nf4 Ne5 24. Qc3 Bd3 25. Rfe1 Ne4 26. Qc1 f5 27. f3
Nxg3 28. Qe3 Qe7 29. Nd5 Qh4 30. Qf4 Nxf3+ 31. Qxf3 Ne2+ 32. Rxe2 Bxe2 33. Qxf5
Bxd1 34. Nf6+ Kf7 35. Nh5+ Ke7 1/2-1/2 

[Event "Reykjavik op"]
[Site "Reykjavik op"]
[Date "1982.??.??"]
[Round "11"]
[White "Kindermann, S."]
[Black "Forintos, G."]
[Result "1/2-1/2"]
[PlyCount "74"]
[WhiteElo "2410"]
[BlackElo "2410"]
[ECO "A40"]

1. d4 e6 2. c4 b6 3. a3 Bb7 4. Nc3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. Bg5 h6 10. Bh4 cxd5 11. Nxd5 Qe8+ 12. Ne3 Ne4 13. Be2 f5 14. Nd4 f4 15.
Nef5 Bc5 16. f3 Bxd4 17. Nxd4 Qh5 18. O-O Qxh4 19. fxe4 Bxe4 20. Bf3 Bxf3 21.
Nxf3 Qh5 22. Re1 Qc5+ 23. Kh1 a5 24. Ne5 f3 25. Nxf3 Qxc4 26. Rc1 Qb5 27. Ne5
Na6 28. a4 Qxb2 29. Qd5+ Kh7 30. Qd3+ Kg8 31. Rb1 Qa2 32. Re2 Qxa4 33. Qd5+ Kh7
34. Qd3+ Kg8 35. Qd5+ Kh7 36. Qd3+ Kg8 37. Qd5+ Kh7 1/2-1/2 

[Event "Odessa"]
[Site "Odessa"]
[Date "1929.??.??"]
[Round "?"]
[White "Makogonov"]
[Black "Freimann, S."]
[Result "0-1"]
[PlyCount "74"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qh4 9. Bb5+ Nd7 10. Bxd7+ Kxd7 11. Qd3+ Kc8 12. Qh3+ Qxh3 13. Nxh3 Bxe4
14. O-O h6 15. Re1 Bf5 16. Nf4 Kb7 17. Ne2 Rd8 18. Nd4 Bd7 19. Bf4 Re8 20. Rad1
c5 21. Nb3 Be6 22. Ra1 Kc6 23. Nd2 Rd8 24. a3 Rd3 25. Ne4 Be7 26. h3 g5 27. Be3
Bd5 28. Nd6 Bxd6 29. exd6 Rxc3 30. h4 gxh4 31. Bf4 Rg8 32. Re7 Rxg2+ 33. Kf1
Rc2 34. d7 Rcxf2+ 35. Ke1 Bc4 36. d8=N+ Kb5 37. Rb1+ Ka6 0-1 

[Event "Palma de Mallorca 4/91"]
[Site "Palma de Mallorca 4/91"]
[Date "1967.??.??"]
[Round "?"]
[White "Gligoric Svetozar (YUG)"]
[Black "Larsen B"]
[Result "0-1"]
[PlyCount "80"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qh4 9. Nf3 Qxe4+ 10. Qxe4 Bxe4 11. Bc4 Nc6 12. O-O O-O-O 13. Re1 Bd5 14.
Ba6+ Kb8 15. Bg5 Be7 16. Bxe7 Nxe7 17. Nd4 Rhe8 18. f4 g6 19. Bb5 c6 20. Bf1 h5
21. g3 c5 22. Nb3 h4 23. c4 Be6 24. Rad1 hxg3 25. hxg3 Bg4 26. Rxd8+ Rxd8 27.
Kf2 Nf5 28. Be2 Bxe2 29. Rxe2 Rd3 30. g4 Nh6 31. g5 Ng4+ 32. Ke1 Ne3 33. Nd2
Nc2+ 34. Kf1 Kc7 35. Rf2 Ra3 36. e6 fxe6 37. Rh2 Rxa2 38. Rh6 Ne3+ 39. Ke1 Ng2+
40. Kd1 Nxf4 0-1 

[Event "Ljubljana/Portoroz 23/112"]
[Site "Ljubljana/Portoroz 23/112"]
[Date "1977.??.??"]
[Round "?"]
[White "Sosonko, G."]
[Black "Planinc, A."]
[Result "1-0"]
[PlyCount "47"]
[WhiteElo "2575"]
[BlackElo "2430"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. Bg5 Be7 8. Bf4
Nh5 9. Bg3 Bf6 10. Nd4 c5 11. Ndb5 Nxg3 12. hxg3 exd5 13. e3 h6 14. Nxd5 Bxb2
15. Rb1 a6 16. Nbc7 Bxd5 17. Nxd5 Bxa3 18. Bd3 b5 19. Qg4 Nc6 20. Rxh6 f5 21.
Qg6 Qa5+ 22. Kf1 Qd2 23. Qh7+ Kf7 24. Rf6+ 1-0 

[Event "Dortmund (Germany)"]
[Site "Dortmund (Germany)"]
[Date "1985.??.??"]
[Round "14"]
[White "Suba Mihai (ROM)"]
[Black "Benjamin, Joel (USA)"]
[Result "1/2-1/2"]
[PlyCount "74"]
[ECO "A10"]

1. c4 b6 2. d4 Bb7 3. Nc3 e6 4. a3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. Bg5 Be7 8. Bf4
Nh5 9. Bd2 f5 10. g3 Bf6 11. Bg2 a5 12. O-O Na6 13. Qc2 Nc5 14. Rad1 Qe7 15.
Ne1 Bxc3 16. Bxc3 Nf6 17. Bd4 Nce4 18. dxe6 Qxe6 19. Nd3 d6 20. Nf4 Qf7 21.
Bxf6 Qxf6 22. Nd5 Qf7 23. a4 Rae8 24. Rd4 Nc5 25. e3 Re5 26. Rfd1 Kh8 27. b3
Bc6 28. Qb2 Ne4 29. Qc2 Rfe8 30. Qb2 R5e6 31. Nf4 Rh6 32. h4 Rf6 33. Bf3 Qd7
34. Nd5 Rff8 35. Bg2 Re5 36. Qc2 Qf7 37. Qb2 Ree8 1/2-1/2 

[Event "Denmark"]
[Site "Denmark"]
[Date "1987.??.??"]
[Round "?"]
[White "Sloth, Jorn"]
[Black "Pedersen, Erik"]
[Result "1/2-1/2"]
[PlyCount "52"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. d5 e6 5. a3 Bd6 6. Nf3 O-O 7. Bg5 Be7 8. Bf4
Nh5 9. Bg3 Nxg3 10. hxg3 Bf6 11. Qc2 g6 12. Rd1 exd5 13. cxd5 Qe7 14. e3 c5 15.
dxc6 dxc6 16. Ne4 c5 17. Nxf6+ Qxf6 18. Bc4 Nc6 19. Rh4 Rad8 20. Rxd8 Nxd8 21.
Rf4 Qe7 22. Qc3 Ne6 23. Qe5 Bxf3 24. gxf3 Qg5 25. Re4 Qxe5 26. Rxe5 Re8 1/2-1/2


[Event "It Open Heart Of Fin"]
[Site "It Open Heart Of Fin"]
[Date "1991.??.??"]
[Round "7"]
[White "Dragomarezki Evgeni"]
[Black "Kengis Edvins"]
[Result "1-0"]
[PlyCount "129"]
[ECO "A10"]

1. c4 b6 2. Nc3 Bb7 3. d4 e6 4. a3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. Bg5 Be7 8. Bf4
Nh5 9. Be3 d6 10. g4 Nf6 11. h3 c6 12. dxe6 fxe6 13. Bg2 c5 14. O-O Nc6 15. Ng5
Qd7 16. f4 Nd8 17. Bxb7 Qxb7 18. f5 d5 19. cxd5 exd5 20. Bc1 h6 21. Nf3 d4 22.
Nb1 Qc7 23. Kg2 Ne4 24. Qe1 Nf7 25. Nbd2 Nfd6 26. Nxe4 Nxe4 27. Nd2 Qc6 28.
Nxe4 Qxe4+ 29. Rf3 Bf6 30. b3 Rfe8 31. Ra2 d3 32. Be3 Rad8 33. Qf1 dxe2 34.
Rxe2 Rd3 35. Re1 Qd5 36. Bf4 Rxe1 37. Qxd3 Qxd3 38. Rxd3 Ra1 39. a4 c4 40. bxc4
Rxa4 41. Rd6 Rxc4 42. Bxh6 Rc2+ 43. Kf3 Rc3+ 44. Ke4 gxh6 45. Rxf6 Rxh3 46. Rc6
Kf7 47. Ke5 Rh4 48. Rc7+ Kg8 49. g5 hxg5 50. Ke6 Rh6+ 51. f6 g4 52. Rg7+ Kf8
53. Rxa7 Kg8 54. Ra8+ Kh7 55. Ke7 Kg6 56. f7 Rh7 57. Rg8+ Kf5 58. Ke8 Rxf7 59.
Kxf7 Kf4 60. Kg6 g3 61. Kh5 Kf3 62. Kh4 g2 63. Kh3 b5 64. Kh2 b4 65. Kg1 1-0 

[Event "It, Tel Aviv (Israel) (It"]
[Site "Tel Aviv (Israel))"]
[Date "1991.??.??"]
[Round "?"]
[White "Har-Zvi"]
[Black "Zak Uriel"]
[Result "1/2-1/2"]
[PlyCount "40"]
[ECO "A40"]

1. c4 b6 2. d4 e6 3. a3 Bb7 4. Nc3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. Bg5 Be7 8. Qd2
Re8 9. g3 h6 10. Bf4 exd5 11. cxd5 b5 12. Nxb5 Nxd5 13. Bg2 Bf6 14. O-O a6 15.
Nbd4 Nc6 16. Rad1 Nxf4 17. Qxf4 Nxd4 18. Nxd4 Bxg2 19. Kxg2 Bxd4 20. Qxd4 Rxe2
1/2-1/2 

[Event "ICCF World Cup8-9 prel-168"]
[Site "corr"]
[Date "1990.??.??"]
[Round "?"]
[White "Suess, Robert (GER)"]
[Black "Alegre Gonzalez, Manuel (ESP)"]
[Result "1/2-1/2"]
[PlyCount "60"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nxd5 Bxd5 7. e4 Bb7 8.
Nf3 e6 9. Bd2 c5 10. Bg5 f6 11. Be3 Nd7 12. dxc5 Bxc5 13. Bxc5 Nxc5 14. Rd1 Qc8
15. Bb5+ Bc6 16. Bxc6+ Qxc6 17. e5 fxe5 18. O-O Qa4 19. Qxa4+ Nxa4 20. Rd2 e4
21. Ng5 Nc5 22. Re2 Rd8 23. b4 Rd5 24. bxc5 Rxg5 25. cxb6 axb6 26. Rb1 Rd5 27.
Rxe4 Kd7 28. Reb4 Rb8 29. h4 Kc6 30. f4 h5 1/2-1/2 

[Event "Budapest act op"]
[Site "Budapest"]
[Date "1995.??.??"]
[Round "?"]
[White "Varga, Zoltan"]
[Black "Izsak, Gyula"]
[Result "0-1"]
[PlyCount "80"]
[WhiteElo "2460"]
[BlackElo "2445"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nxd5 Bxd5 7. e4 Bb7 8.
Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 c5 14. dxc5
Bxf3 15. gxf3 Nxc5 16. Bb5+ Kf8 17. Qe3 a6 18. Be2 h6 19. b4 Na4 20. Rd1 Qe7
21. Rd6 g6 22. Bd1 b5 23. Bb3 Kg7 24. O-O Rhc8 25. Rfd1 Nc3 26. R1d2 Qg5+ 27.
Kf1 Qxe3 28. fxe3 Rc7 29. Rd7 Rxd7 30. Rxd7 Kf8 31. Rc7 Nb1 32. Bc2 Na3 33. Be4
Rd8 34. Ra7 Nc4 35. Rxa6 Rd2 36. Bc6 Nxe3+ 37. Ke1 Rxh2 38. Bxb5 Nc2+ 39. Kf1
Nxb4 40. Ra8+ Kg7 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15; 4. d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6. e4
Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3
(9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9.
Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 cxd5 10.
cxd5 Na6; 4. f3) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4
{Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 {Euwe - Alekhine , Budapest 1921}; 4.
d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6; 4. f3) 4... e6 5. Qc2
h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 {Euwe - Alekhine , Budapest 1921}
(12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11); 4. d5
e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7...
h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5;
7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5)
7... exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6; 4. f3) 4... e6 5. Qc2 h6 6. Bh4
Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7...
O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 {Euwe - Alekhine , Budapest 1921}
(12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12...
Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13); 4. d5 e6 5. a3 Bd6 (5... Be7)
6. Nf3 (6. e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8...
Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6
(8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6
9. Be2 cxd5 10. cxd5 Na6; 4. f3) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7.
e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3
Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1) 6... O-O 7. e4 (7.
Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3
10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10.
Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 cxd5 10. cxd5 Na6; 4. f3) 4...
e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini,
France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad
Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8...
Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6
(8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6
9. Be2 cxd5 10. cxd5 Na6; 4. f3) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7.
e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3
Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "FRA-chT2S 9900"]
[Site "France"]
[Date "2000.01.15"]
[Round "5"]
[White "Foisor, Ovidiu Doru"]
[Black "Sulava, Nenad"]
[Result "1/2-1/2"]
[PlyCount "28"]
[WhiteElo "2491"]
[BlackElo "2466"]
[ECO "A50"]

1. c4 b6 2. d4 e6 3. a3 Bb7 4. Nc3 Nf6 5. d5 Bd6 6. Nf3 O-O 7. e4 exd5 8. exd5
c6 9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 12. Bg5 Rfe8 13. Qc2 Bf4 14. Rad1 Bxg5
1/2-1/2 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6; 4. f3) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 Nc5 {Andreasen -
Pedersen, Denmark 1988}; 4. f3) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7.
e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3
Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "?"]
[White "Lutikov, Anatoly"]
[Black "Van Geet, Dirk"]
[Result "1/2-1/2"]
[PlyCount "22"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O 1/2-1/2 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}) 8... exd4 9. Ne2 $1 d3 $1
{exclams by Kogan in SOS-6}) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3
O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3
Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "Grozny"]
[Site "Grozny"]
[Date "1969.??.??"]
[Round "?"]
[White "Beliavsky Alexander"]
[Black "Panchenko Alexander N"]
[Result "0-1"]
[PlyCount "66"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
Ne2 exd4 9. cxd4 Be7 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 13. Rd1 Qd7 14. g3 Rd8
15. f4 Be7 16. Bg2 Qb5 17. Qxb5 Bxb5 18. Rc1 Ba3 19. Rb1 Bc4 20. Nc3 Nc6 21. d5
Nb4 22. Bf1 Nd3+ 23. Bxd3 Bxd3 24. Rb3 Bf8 25. g4 c6 26. dxc6 Rac8 27. Bh4 f6
28. Kf2 Bc5+ 29. Kf3 Bc4 30. Rc1 Rd3+ 31. Kg2 Bxb3 32. axb3 Ba3 33. Nd5 Rxd5
0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969})
8... exd4 9. Ne2 $1 d3 $1 {exclams by Kogan in SOS-6}) 4... e6 5. Qc2 h6 6. Bh4
Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7...
O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "Geneva"]
[Site "Geneva"]
[Date "1990.??.??"]
[Round "?"]
[White "Graf, Jurgen"]
[Black "Horn"]
[Result "1-0"]
[PlyCount "65"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qh4+ 9. g3 Qh5 10. e6 fxe6 11. Qb3 Be7 12. Qxe6 Nd7 13. Ba3 Nc5 14. Bb5+
Kf8 15. Bxc5 Bxc5 16. Ne2 Rd8 17. Nf4 Bf2+ 18. Kxf2 Qc5+ 19. Kg2 Qxb5 20. Rhd1
Re8 21. Qb3 Qc6 22. Rd5 g6 23. Rad1 Bc8 24. c4 Kg7 25. Qc3+ Kf7 26. h4 Rhg8 27.
g4 Rg7 28. c5 Kg8 29. h5 g5 30. h6 Qxh6 31. Rd8 Kf8 32. Rxe8+ Kxe8 33. Rh1 1-0 

[Event "GRE-chT 29th"]
[Site "Athens"]
[Date "2000.07.07"]
[Round "2"]
[White "Mouroutis, Konstantinos"]
[Black "Bousios, Hristos"]
[Result "1-0"]
[PlyCount "73"]
[WhiteElo "2222"]
[BlackElo "2273"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
dxe5 Qxd1+ 9. Kxd1 Nd7 10. Bf4 h6 11. h4 O-O-O 12. Kc2 Bc5 13. Bc4 Rhf8 14. Ne2
Rde8 15. Nc1 Be7 16. Nd3 Bd8 17. Rh3 g5 18. hxg5 hxg5 19. Bg3 f6 20. e6 Nb8 21.
Nf2 Nc6 22. a4 Na5 23. Ba2 Bc6 24. Bd5 Rh8 25. Rxh8 Rxh8 26. Ng4 Re8 27. Ne3
Be7 28. Nf5 Bc5 29. Kd3 Rd8 30. e7 Re8 31. Bf7 Rh8 32. Be6+ Kb8 33. Ke2 Rh7 34.
Rd1 Bxe7 35. Nxe7 Rxe7 36. Rd8+ Kb7 37. Bc8+ 1-0 

[Event "Leningrad"]
[Site "Leningrad"]
[Date "1938.??.??"]
[Round "?"]
[White "Levitas"]
[Black "Tolush, Alexander"]
[Result "0-1"]
[PlyCount "51"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 14. Be3 O-O
15. Rd1 Qg6 16. Ng4 Rad8 17. Bf2 Bc8 18. Bh4 Rde8 19. Kf2 Kh8 20. Bd3 c5 21. d5
c4 22. Qxc4 Nc5 23. Ne3 Ba6 24. Qxa6 Nxa6 25. Bxa6 Bc5 26. Rhe1 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969};
8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13.
Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6
12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2
$1 d3 $1 {exclams by Kogan in SOS-6}) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "Keres mem op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "1"]
[White "Dignum, Erik"]
[Black "Kogan, Artur"]
[Result "0-1"]
[PlyCount "54"]
[BlackElo "2518"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 8.
Bc4 exd4 9. Ne2 d3 10. Nd4 Bc5 11. Bxf7+ Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ 14. Bxd2
Bf2+ 15. Ke2 Ba6+ 16. Kxf2 Qxd2+ 17. Kg3 Qd6+ 18. e5 Qe7 19. Qd5 c6 20. Qd6 Kf7
21. Qxe7+ Kxe7 22. Nc7 Bb7 23. Rad1 Nd7 24. Nxa8 Rxa8 25. f4 Rf8 26. a4 Nc5 27.
Rd4 Nb3 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969};
8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13.
Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6
12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2
$1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10.
Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7
12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitschn - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Queen's Grunfeld"]
[Black "Black system"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969};
8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13.
Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6
12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2
$1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10.
Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7
12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969};
8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13.
Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6
12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2
$1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10.
Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7
12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "Antwerp,BEL active"]
[Site "Antwerp,BEL active"]
[Date "1996.??.??"]
[Round "?"]
[White "Mohandesi, Shahin"]
[Black "Kogan, Artur <ISR IM>"]
[Result "0-1"]
[PlyCount "58"]
[ECO "A47"]

1. d4 Nf6 2. Nf3 b6 3. c4 Bb7 4. Nc3 d5 5. Bg5 Ne4 6. Bf4 e6 7. e3 g5 8. Be5 f6
9. Bg3 h5 10. h4 Nxg3 11. fxg3 g4 12. Nd2 Qd6 13. Kf2 Bh6 14. Qc2 Nc6 15. Re1
O-O-O 16. c5 bxc5 17. Nb5 Qe7 18. Nb3 a6 19. Nc3 Bxe3+ 20. Rxe3 cxd4 21. Re1
dxc3 22. Qxc3 d4 23. Qc5 Qd6 24. Rc1 d3 25. Rd1 Ne5 26. Ke3 Qd7 27. Qb4 Qd5 28.
Nc5 Nc4+ 29. Kf2 Qd4+ 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 Ne4 $1 6. Bf4 e6 7.
e3 g5 $1 8. Be5 f6 9. Bg3 h5 10. h4 Nxg3 11. fxg3 g4 12. Nd2 Qd6 13. Kf2 Bh6
14. Qc2 Nc6 $5 15. Re1 $6 O-O-O $17; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5.
cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4
Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1
10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic,
Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the
idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3.
Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5
(4... e6 {transposing to an innocuous line of the Queen's Indian is good.};
4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5
5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+
11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest
1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7
10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1
Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14.
e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest
1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by
Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17
{white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10.
Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6.
Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio -
Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2)
8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5
c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5
c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb
1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5
{Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3
e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3
O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6
$5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969};
8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13.
Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6
12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2
$1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10.
Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7
12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7.
f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1
9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 Ne4 $1 6. Bf4 e6 7.
e3 g5 $1 8. Be5 f6 9. Bg3 h5 10. h4 Nxg3 11. fxg3 g4 12. Nd2 Qd6 13. Kf2 Bh6
14. Qc2 Nc6 $5 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6
19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+
Qxc7) 15... O-O-O $17; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6.
Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6...
Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13)
7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia,
1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of
"e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5; 3.
g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6
{transposing to an innocuous line of the Queen's Indian is good.}; 4... g6) 5.
cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5
6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+
12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6...
Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+
11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5
16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14...
cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6
5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7.
Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has
insufficient compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11.
Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5
$1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve
1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9.
Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2
Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6
dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10.
cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen,
Denmark 1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7...
g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov -
Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O
11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9.
Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to
prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13.
Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4
Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10.
Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8
13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht:
Keres mem 1999}) 11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7.
e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3
Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 Ne4 $1 6. Bf4 e6 7.
e3 g5 $1 8. Be5 f6 9. Bg3 h5 10. h4 Nxg3 11. fxg3 g4 12. Nd2 Qd6 13. Kf2 Bh6
14. Qc2 Nc6 $5 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6
19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7
22. Qd3 Rad8 $17 {Black's king is safer.}) 15... O-O-O $17; 3. d5 e6 4. a3 (4.
Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4...
exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5)
8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O
{Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3.
f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4...
Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3
Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the Queen's
Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7
4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+
c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 Ne4 $1 6. Bf4 e6 7.
e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4
(12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15
12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4
Nxg3 11. fxg3 g4 12. Nd2 Qd6 13. Kf2 Bh6 14. Qc2 Nc6 $5 15. Re1 $6 (15. Qg6+
Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3
Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is
safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6
4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4...
Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1
(8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3
Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7.
Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6.
Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3"
line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 Ne4 $1 6. Bf4 e6 7.
e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4
(12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15
12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4
Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also good.}) 12. Nd2
Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5
(14... f5 {with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16.
Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19...
Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.})
15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3
(4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6
(4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8.
Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6.
Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6
$11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5)
4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13) 5... Ne4 $1 6. Bf4
e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4
12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4
$1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5
10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also good.})
12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2
Nc6 $5 (14... f5 {with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+
Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3
Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is
safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6
4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4...
Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1
(8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3
Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7.
Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6.
Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3"
line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "Hungary tt"]
[Site "Hungary tt"]
[Date "1995.??.??"]
[Round "7"]
[White "Wells, P."]
[Black "Adorjan, Andras"]
[Result "0-1"]
[PlyCount "48"]
[WhiteElo "2530"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 g6 7. Bd2 Bg7 8. e4
Nf6 9. O-O-O O-O 10. h4 Ng4 11. Bf4 Nc6 12. d5 Nb4 13. Qd2 c6 14. a3 a5 15.
dxc6 Nxc6 16. Bb5 e5 17. Qe2 Qc8 18. Be3 Nxe3 19. fxe3 Na7 20. Kb1 Nxb5 21.
Qxb5 Qg4 22. Nxe5 Qxg2 23. Rhg1 Qh2 24. Nf3 Qf2 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. Nxd5 (7. Bd2 Bg7 8. e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12.
d5 Nb4 13. Qd2 c6 $1 $15 {Wells,P - Adorjan,Andras, Hungary 1995}) 7... Qxd5 8.
e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8.
Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+
c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+
Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11.
fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also good.}) 12. Nd2 Qd6 13.
Kf2 Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14...
f5 {with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5
Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7
20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15...
O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3
Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5
5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8...
Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O
{Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3.
f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4...
Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3
Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the Queen's
Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7
4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+
c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 O-O 10.
h4 $5 Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4
16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5
f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6
13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6
13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3
g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also good.}) 12. Nd2 Qd6 13. Kf2
Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5
{with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+
17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20.
dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O
$17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4;
4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5.
cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8...
Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O
{Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3.
f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4...
Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line}; 3. e3
Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the Queen's
Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7
4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+
c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 O-O 10.
h4 $5 Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4
16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5...
Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2
(11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7
$19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7
$19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is
also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5
(7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15
12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1
$11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6
fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5.
e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... e6 5. Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch
- Marshall, Bad Kissingen 1928}  *

[Event "Sukhumi U20 12th"]
[Site "Sukhumi"]
[Date "1970.10.13"]
[Round "11"]
[White "Barle, Janez"]
[Black "Panchenko, Alexander N"]
[Result "0-1"]
[PlyCount "84"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 g6 7. e4 Nxc3 8.
bxc3 Bg7 9. Bc4 O-O 10. h4 Qd7 11. Be3 Qg4 12. Ng5 Ba6 13. Bb3 h6 14. f3 Qd7
15. e5 hxg5 16. Qxg6 Qb5 17. Qc2 Qd3 18. Qxd3 Bxd3 19. Bxg5 e6 20. O-O-O Bh7
21. h5 Re8 22. Rh3 c6 23. h6 Bh8 24. Bc2 Nd7 25. Be4 Bxe4 26. fxe4 f6 27. h7+
Kg7 28. exf6+ Nxf6 29. Bf4 Nxe4 30. Be5+ Kf7 31. Rh4 Bxe5 32. dxe5 Nc5 33. Rdh1
Rh8 34. Rf4+ Ke7 35. Rg4 Raf8 36. Rgh4 Nd3+ 37. Kd2 Nxe5 38. Ke3 Rf7 39. g4 Rg7
40. Ke4 Nf7 41. Kf4 Ng5 42. Rh6 Rgxh7 0-1 

[Event "Biel"]
[Site "Biel"]
[Date "1986.??.??"]
[Round "?"]
[White "Toth, Bela"]
[Black "Horn, Pascal"]
[Result "0-1"]
[PlyCount "58"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 Nxc3 7. bxc3 g6 8.
e4 Bg7 9. Bc4 O-O 10. h4 Qd7 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6
15. Ne1 Qg1 16. Nf3 Qg2 17. Rh2 Qg4 18. Bd3 c5 19. Bh6 c4 20. Bxc4 Bxe4 21. Qd2
Qxf3+ 22. Kf1 Rc8 23. Re1 Rxc4 24. Re3 Qf5 25. Reh3 Bf3 26. Qe1 Qd3+ 27. Kg1
Qe2 28. Qxe2 Bxe2 29. Bf4 Nd7 0-1 

[Event "Compuserve casual"]
[Site "email"]
[Date "1993.??.??"]
[Round "?"]
[White "Charrette, Craig"]
[Black "Murphy, James"]
[Result "0-1"]
[PlyCount "54"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 Nxc3 7. bxc3 g6 8.
e4 Bg7 9. Bc4 O-O 10. O-O Nd7 11. Rb1 Nf6 12. Re1 c5 13. dxc5 Qc7 14. e5 Ng4
15. e6 f5 16. h3 Qxc5 17. Rb4 Bxc3 18. Qxc3 Qxf2+ 19. Kh1 Bxf3 20. Bf1 Qg3 21.
Rxg4 Bxg2+ 22. Bxg2 Qxc3 23. Rxg6+ hxg6 24. Rf1 Rad8 25. Bg5 f4 26. Bxe7 Rd2
27. Bxf8 Qg3 0-1 

[Event "ACL-E077"]
[Site "www.playchess.de"]
[Date "2002.09.18"]
[Round "3"]
[White "WhiteDragon"]
[Black "John-Joe"]
[Result "1/2-1/2"]
[PlyCount "125"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d5 5. cxd5 Nxd5 6. Nf3 Nxc3 7. bxc3 g6 8.
e4 Bg7 9. Bc4 O-O 10. O-O c5 11. Bf4 Nd7 12. Rad1 cxd4 13. cxd4 Nf6 14. d5 Rc8
15. Qe2 Qd7 16. Be5 Rfd8 17. Bb5 Qg4 18. Rd4 Rc5 19. Ra4 a5 20. Bd4 Qxe4 21.
Bxc5 Qxe2 22. Bxe2 bxc5 23. Rxa5 Bxd5 24. Rxc5 Bxa2 25. Rfc1 h6 26. Rc8 Rxc8
27. Rxc8+ Kh7 28. Rc7 Ng8 29. Nd2 h5 30. h4 Bd5 31. Bc4 Bxc4 32. Nxc4 Bd4 33.
Rd7 Bc5 34. g3 Kg7 35. Kg2 Nf6 36. Rc7 Bb4 37. Rb7 Bc5 38. Rb5 Nd7 39. Ne5 Nxe5
40. Rxc5 Kf6 41. Kf1 Ng4 42. Ke2 Ke6 43. Ra5 f6 44. Ra6+ Kd5 45. f3 Nh6 46.
Ra5+ Ke6 47. Kf2 Nf5 48. Kg2 Ne3+ 49. Kh3 Nd5 50. f4 Ne3 51. Kh2 Nc4 52. Rc5
Ne3 53. Kg1 Kd6 54. Ra5 Nf5 55. Kf2 Ke6 56. Kg2 Nd4 57. Ra7 Nb5 58. Rb7 Nd6 59.
Ra7 Nb5 60. Ra5 Nd4 61. Kf2 Nf5 62. Kf3 Nd4+ 63. Ke3 1/2-1/2 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 O-O 10.
h4 $5 (10. O-O Nd7 {with normal Grunfeld play.}) 10... Qd7 $1 11. h5 Qg4 12.
hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18.
Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1
8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12.
Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12.
Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3
11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also good.}) 12. Nd2 Qd6
13. Kf2 Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5
(14... f5 {with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16.
Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19...
Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.})
15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3
(4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6
(4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8.
Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6.
Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6
$11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5)
4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 O-O 10.
h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7) 10... Qd7
$1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4 16. Rg1
Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1
6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11.
Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19)
11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19)
9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is also
good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right moment.}
14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15. Re1 $6
(15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7
20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's
king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996};
3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5
$15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+
8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3
(5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5
Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5.
d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5; 3. g3 Bb7 4. Nf3 {transposes
to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous
line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4
Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4
Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5
{Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6;
7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6
(12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12...
Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6
Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3
b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9.
Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7...
exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O
a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3
c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen
1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4
16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5...
Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2
(11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7
$19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7
$19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is
also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 (6... Be7) 7. Bg3 Nxe4 $17) 6... Qxf6) 5... h6
6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003})
7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928} 
*

[Event "Kemeri (Latvia)"]
[Site "Kemeri (Latvia)"]
[Date "1937.??.??"]
[Round "?"]
[White "Stahlberg Gideon (SWE)"]
[Black "Tartakower Saviely"]
[Result "1/2-1/2"]
[PlyCount "120"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Bg5 e6 5. e4 h6 6. Bxf6 Qxf6 7. Nf3 Bb4 8. Bd3
c5 9. O-O cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 Nc5 13. Bc2 O-O 14. Nc3 d6 15.
f4 g6 16. b4 Nd7 17. Ba4 Rfd8 18. Bc6 Rab8 19. Bxb7 Rxb7 20. e5 dxe5 21. Nc6
Re8 22. fxe5 Qg7 23. Qf3 Nb8 24. Nd8 Rc7 25. Qxf7+ Qxf7 26. Nxf7 Rxc4 27. Nb5
Rf8 28. Nfd6 Rg4 29. Nxa7 Rg5 30. Nac8 Bxd6 31. Nxd6 Nd7 32. Rxf8+ Kxf8 33.
Rf1+ Ke7 34. Rf7+ Kd8 35. Rh7 Nxe5 36. Rxh6 Kc7 37. Nb5+ Kc6 38. Nd4+ Kd5 39.
Ne2 Nd3 40. Rh8 e5 41. Rb8 Ne1 42. Rxb6 Nxg2 43. Rb5+ Kc4 44. Rc5+ Kb3 45. Rc3+
Ka4 46. Kf2 Nh4 47. Ng3 Rg4 48. Re3 Rf4+ 49. Ke2 Nf5 50. Rxe5 Kxa3 51. b5 Rh4
52. Kd3 Rxh2 53. Nxf5 gxf5 54. Re2 Rh4 55. Kc3 f4 56. Re1 Ka4 57. b6 Rh8 58.
Kc4 Ka5 59. Rb1 Ka6 60. b7 Ka7 1/2-1/2 

[Event "CL5-1999.11"]
[Site "IECC Email"]
[Date "1999.04.11"]
[Round "?"]
[White "Axenhus, Ilpo (SWE)"]
[Black "Downham, Simon (ENG)"]
[Result "0-1"]
[PlyCount "78"]
[WhiteElo "1271"]
[BlackElo "1632"]
[ECO "A50"]

1. c4 Nf6 2. d4 e6 3. Nc3 b6 4. e4 Bb4 5. Bd3 Bb7 6. Bg5 h6 7. Bxf6 Qxf6 8. Nf3
c5 9. O-O cxd4 10. Nb5 Na6 11. a3 Be7 12. e5 Qf4 13. Nbxd4 O-O 14. Ne2 Qg4 15.
h3 Qh5 16. Nf4 Bxf3 17. Nxh5 Bxd1 18. Raxd1 Rac8 19. b4 Rfd8 20. f4 Nb8 21. Rf3
d5 22. cxd5 Rxd5 23. Be2 Rxd1+ 24. Bxd1 Rc1 25. Rd3 Kf8 26. Kf1 a5 27. bxa5
bxa5 28. Ke2 g5 29. g3 gxf4 30. gxf4 Nc6 31. Ba4 Rc4 32. Bxc6 Rxc6 33. Ng3 Rc2+
34. Kf3 Ra2 35. Ne4 Rxa3 36. Rxa3 Bxa3 37. h4 h5 38. Nf6 Be7 39. Nxh5 a4 0-1 

[Event "Baden-ch Seniors"]
[Site "Oberwinden"]
[Date "2007.04.06"]
[Round "1"]
[White "Dinser, Hans"]
[Black "Mueller, Rudolf"]
[Result "0-1"]
[PlyCount "78"]
[WhiteElo "1910"]
[BlackElo "2209"]
[ECO "A50"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e4 Bb7 5. Bd3 Bb4 6. Bg5 h6 7. Bxf6 Qxf6 8. Nf3
c5 9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 13. Nb5 Ke7 14. a3 Bd2 15.
Be4 a6 16. Nc3 cxd4 17. Ne2 d3 18. Bxd3 Nxe5 19. Be4 Rac8 20. b3 Rc7 21. f4 f5
22. Bg2 Ng6 23. Rad1 Bxf4 24. Rfe1 Be5 25. Bf1 Nh4 26. Rd3 g5 27. Ng3 Bd6 28.
Red1 Bxa3 29. Ra1 Bc5 30. Rxa6 g4 31. Nh5 Nf3+ 32. Kh1 Bxf2 33. Nf4 Rg8 34. Bg2
Ne5 35. Rd2 Be3 36. Nd5+ exd5 37. Rxd5 d6 38. Bf1 g3 39. hxg3 Rxg3 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4
16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5...
Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2
(11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7
$19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7
$19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8  {is
also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8.
Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser
- Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003})
7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928} 
*

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 Bxh4
16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5...
Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2
(11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7
$19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7
$19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is
also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8.
Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser
- Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003})
7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch - Marshall, Bad Kissingen 1928} 
*

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5
(7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15
12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1
$11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6
fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5.
e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17)
6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3
Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5
Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC
Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower,
Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch
- Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "18"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5
(7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15
12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1
$11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6
fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5.
e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17)
6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3
Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5
Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC
Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower,
Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 {Nimzowitsch
- Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5
(7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15
12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1
$11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6
fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5.
e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17)
6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3
Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5
Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC
Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower,
Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5
$15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}) 6... Nxc3 7. bxc3 e5 $5
(7... e6; 7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15
12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1
$11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6
fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5.
e4 Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17)
6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3
Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5
Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC
Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower,
Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson
- Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "32"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Qc2 (4. Bg5 e6 5. Qc2 (5. e4 h6 6. Bxf6 (6.
Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4
10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden
2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17
{Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11
{Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3
g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5
$15 {Nimzowitsch - Marshall, Bad Kissingen 1928}; 4. d5 e6 5. a3 $5 (5. e4 Bb4
6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4
Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9.
Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $15 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "32"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Qc2 (4. Bg5 e6 5. Qc2 (5. e4 h6 6. Bxf6 (6.
Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4
10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden
2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17
{Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11
{Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3
g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5
{Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5
$15 {Nimzowitsch - Marshall, Bad Kissingen 1928}; 4. d5 e6 5. a3 $5 (5. e4 Bb4
6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4
Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4
(8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet,
Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5
12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10.
Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"};
8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13
{Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2
O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11.
Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+
(13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999})
11... Nc6 $11) 4... d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9.
Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to
the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5
{is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6
10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8.
e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 dxc3 13. O-O a6 $1
$17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}; 4. f3 d5 5. cxd5
Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+
Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2
exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky -
Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11.
Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10.
Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad
1938}) 8... exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams
by Kogan in SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11.
Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+
{Dignum,Erik - Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8.
Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser
- Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to
the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5
$1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O
$11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5)
10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8.
dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2
e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12.
Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1
(9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4
$5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12.
Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5
$5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4
Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7...
exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3)
12... dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6
7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12.
gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3
Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email
1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri
(Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson -
Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "30"]

1. d4 Nf6 2. c4 b6 3. Nf3 (3. Nc3 Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6.
Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2
Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3
{transposes to the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6;
7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6
(12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12...
Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6
Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7.
bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11.
Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9...
Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny
1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6
fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11.
Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8...
exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in
SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11.
Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik -
Kogan,Artur, Utrecht: Keres mem 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4
Bb4 6. Bd3 b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8.
Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient
compensation}) 7... exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12.
gxf3 (12. Qxf3) 12... dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4
Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve
1988}) 6... O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9.
Bd2; 9. Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2
Nxd5 (9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6
dxc6 10. Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10.
cxd5 Na6 $15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen,
Denmark 1988}) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17)
6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3
Qxf3 12. gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5
Na6 11. a3 Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC
Email 1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower,
Kemeri (Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson
- Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3
O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+
$5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3
Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2 g6 7. e4 (7. Nxd5 Qxd5 8. e3
Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8. e4 Nf6 9. O-O-O O-O 10. h4
Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15 {Wells,P - Adorjan,Andras,
Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2 O-O 10. O-O Nd7 (10... c5)
11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15. d5 c4 $1 16. Bxc4 Bxb2 17.
Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9... O-O 10. h4 $5 (10. O-O c5
(10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7) 10... Qd7 $1 11. h5 Qg4 12.
hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15. Ne1 Qg1 16. Nf3 $11) 15...
Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan})
5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11.
Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+
Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+
Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8
{is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}  *

[Event "RUS-ch U14"]
[Site "Nizhnij Novgorod"]
[Date "1999.??.??"]
[Round "?"]
[White "Kirillov, Igor"]
[Black "Anisimov, Pavel"]
[Result "0-1"]
[PlyCount "82"]
[WhiteElo "2169"]
[BlackElo "2295"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Nf3 d5 5. Bg5 Ne4 6. Bf4 e6 7. cxd5 exd5 8. e3
Bd6 9. Bxd6 Qxd6 10. Bb5+ c6 11. Bd3 f5 12. Ne5 Nd7 13. Nxd7 Qxd7 14. Qc2 O-O
15. O-O-O Rac8 16. Kb1 Qe6 17. g4 Rce8 18. Ka1 Kh8 19. h3 fxg4 20. Bxe4 dxe4
21. hxg4 Qxg4 22. Rdg1 Qf5 23. Rh2 Ba6 24. Rgh1 Bd3 25. Qd1 h6 26. Ne2 Bxe2 27.
Qxe2 Rf6 28. a3 c5 29. dxc5 Qxc5 30. Rh5 Qc6 31. Rg1 Qe6 32. Rh2 Ref8 33. Rhg2
R8f7 34. Qc2 Qc6 35. Qe2 b5 36. Rd1 Rd7 37. Rxd7 Qxd7 38. Qc2 Qc6 39. Qe2 b4
40. axb4 Qa4+ 41. Kb1 Qxb4 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to
the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5
$1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O
$11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5)
10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8.
dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2
e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12.
Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1
(9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4
$5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12.
Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5
$5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4
Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7...
exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3)
12... dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6
7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12.
gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3
Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email
1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri
(Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson -
Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to
the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5
$1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O
$11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5)
10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8.
dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2
e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12.
Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1
(9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4
$5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12.
Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht: Keres mem 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5
$5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4
Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7...
exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3)
12... dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6
7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12.
gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3
Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email
1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri
(Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson -
Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 12. Qa4+ Nc6 13.
Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4
(11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6
{threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14... f5 {with
kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17.
Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+
Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15... O-O-O $17
{Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3
exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5
$5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9.
Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic
- Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1
{with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6
$15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7 4. Nf3
{transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to
an innocuous line of the Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5
e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5
Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13.
e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to
the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8.
dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6
$1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1
c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19
{Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5
$1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O
$11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5)
10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8.
dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2
e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12.
Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1
(9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4
$5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12.
Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a
gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10.
O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8. e5
d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3) 12... dxc3 13.
O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6
9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5
Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10.
hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5
cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O
Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8
12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8.
Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser
- Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11) 15... Bxh4 16. Rg1 Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13
{"Looks okay for black" - Kogan}) 5... Ne4 $1 6. Bf4 e6 7. e3 g5 $1 8. Be5 f6
9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11. Qb3 h4 12. Nxe4 (12. Bb5+ c6 13.
Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19) 11... Bb4 $1 $15 {Kogan} 12. Qa4+
Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+ Kxd7 $19) 9... h5 10. h4 Nxg3 11.
fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8 {is also good.}) 12. Nd2 Qd6 13.
Kf2 Bh6 {threatening sacs on "e3" at the right moment.} 14. Qc2 Nc6 $5 (14...
f5 {with kingside castling is also good.}) 15. Re1 $6 (15. Qg6+ Kd7 16. Nb5
Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+ Ne7 20. Nc3 Raf8) 19... Ne7
20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8 {Black's king is safer.}) 15...
O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL active 1996}; 3. d5 e6 4. a3 (4. Nc3
Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7. e4 Nh5 $5 $15) 4... Ba6 (4... exd5
5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7. Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8...
Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6 $13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O
{Stamenkovic - Drazic, Sofia, 1994}) 5... exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3.
f3 Nc6 $1 {with the idea of "e5"} 4. d5 (4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4...
Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3 {transposes to the main line.}; 3. g3 Bb7
4. Nf3 {transposes to a "Nf3" line}; 3. e3 Bb7 4. Nf3 d5 $5 (4... e6
{transposing to an innocuous line of the Queen's Indian is good.}; 4... g6) 5.
cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3) 3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5
6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6 9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+
12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan - Izsak,Gyula , Budapest 1995}; 6. Nf3
{transposes to the third move alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6;
7... g6) 8. dxe5 Qh4 $1 9. Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6
(12. O-O c6 $1 13. Bc4 Rd8 14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12...
Bxg2 13. Rg1 c6 $1 14. Rxg2 $2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6
Kf7 $19 {Euwe - Alekhine , Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7.
bxc3 e5 $1 (7... e6; 7... g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11.
Be3 O-O $11 {Lutikov - Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9...
Bd6 $5) 10. Be3 O-O 11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny
1969}; 8. dxe5 Nd7 $1 9. Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6
fxe6 13. Ne2 e5 $1 {to prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11.
Kf1 Qf6 12. Nh3 h6 13. Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8...
exd4 9. Ne2 $1 (9. cxd4 Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in
SOS-6} 10. Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11.
Bxf7+ $6 Kxf7 12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik -
Kogan,Artur, Utrecht 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3
b5 $5 {is a gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9.
Qd4 Nf6 10. O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7...
exd5 8. e5 d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3)
12... dxc3 13. O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2
Qe7 8. Be2 Na6 9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6...
O-O 7. e4 (7. Bg5 Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9.
Be3) 9... Nxg3 10. hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5
(9... Na6) 10. Nxd5 cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10.
Be2 Qc7 11. O-O Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6
$15 11. O-O Re8 12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark
1988}) 4... e6 5. Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6
7. Nf3 Bb4 $13 8. Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12.
gxf3 Nc6 $17 {Dinser - Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3
Be7 12. Nfxd4 (12. e5 Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email
1999}) 12... Nc5 $1 13. Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri
(Latvia) 1937}) 5... h6 6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson -
Kaupang, Sandefjord 2002}; 7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France
2003}) 7... O-O 8. e5 Nd5 $1 9. Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall,
Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11 {Toth,Bela - Horn,Pascal, Biel 1986}) 15... Bxh4 16. Rg1
Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1
6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11.
Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19)
11... Bb4 $1 $15 {Kogan} 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+
Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8
{is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7...
g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov -
Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O
11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9.
Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to
prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13.
Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4
Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10.
Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8
13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht
1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit
recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O
11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9.
exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3) 12... dxc3 13. O-O a6
$1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}) 4... e6 5. Qc2 (5.
e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5
9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser -
Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11 {Toth,Bela - Horn,Pascal, Biel 1986}) 15... Bxh4 16. Rg1
Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1
6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11.
Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19)
11... Bb4 $1 $15 {Kogan} 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+
Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8
{is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7...
g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov -
Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O
11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9.
Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to
prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13.
Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4
Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10.
Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8
13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht
1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit
recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O
11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9.
exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3) 12... dxc3 13. O-O a6
$1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}) 4... e6 5. Qc2 (5.
e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5
9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser -
Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "Bad Kissingen"]
[Site "Bad Kissingen"]
[Date "1928.??.??"]
[Round "7"]
[White "Nimzowitsch, Aaron"]
[Black "Marshall, Frank J"]
[Result "0-1"]
[PlyCount "50"]
[ECO "A50"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Bg5 e6 5. Qc2 h6 6. Bh4 Be7 7. e4 O-O 8. e5
Nd5 9. Bg3 Nb4 10. Qb3 d5 11. exd6 Bxd6 12. O-O-O N8c6 13. Bxd6 Qxd6 14. a3
Nxd4 15. Rxd4 (15. Qxb4 c5 16. Qa4 Bc6 17. Qa6 Qf4+ 18. Kb1 Qxf2 19. Nge2 Nf5
$17) 15... Qxd4 16. axb4 Qxf2 17. Qd1 Rfd8 18. Qe2 Qf4+ 19. Kc2 a5 20. bxa5
Rxa5 21. Nf3 Ra1 22. Kb3 b5 23. Qe5 bxc4+ 24. Kb4 Qc1 25. Nb5 c5+ 0-1 

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11 {Toth,Bela - Horn,Pascal, Biel 1986}) 15... Bxh4 16. Rg1
Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1
6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11.
Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19)
11... Bb4 $1 $15 {Kogan} 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+
Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8
{is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7...
g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov -
Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O
11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9.
Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to
prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13.
Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4
Bb4+ 10. Kf2 O-O $15) 9... d3 $1 {exclams by Kogan in SOS-6} 10. Nd4 $5 (10.
Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7 12. Qb3+ Ke8
13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur, Utrecht
1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a gambit
recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10. O-O O-O
11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8. e5 d4 $1 9.
exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3) 12... dxc3 13. O-O a6
$1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6 9. f3 c6
$17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5 Be7
(7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10. hxg3
f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5 cxd5
11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O Nbd7
{Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8 12. Bg5
(12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}) 4... e6 5. Qc2 (5.
e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8. Bd3 c5 $5
9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser -
Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Accelerated"]
[Black "Queen's Indian"]
[Result "*"]
[PlyCount "20"]

1. d4 Nf6 2. c4 b6 3. Nc3 (3. Nf3 Bb7 4. Nc3 d5 $5 5. Bg5 (5. cxd5 Nxd5 6. Qc2
g6 7. e4 (7. Nxd5 Qxd5 8. e3 Nd7 $5 9. Bc4 Qf5 10. Qxf5 gxf5 $13; 7. Bd2 Bg7 8.
e4 Nf6 9. O-O-O O-O 10. h4 Ng4 $1 11. Bf4 Nc6 $1 12. d5 Nb4 13. Qd2 c6 $1 $15
{Wells,P - Adorjan,Andras, Hungary 1995}) 7... Nxc3 8. bxc3 Bg7 9. Bc4 (9. Be2
O-O 10. O-O Nd7 (10... c5) 11. a4 e5 12. Bb2 Re8 13. Bd3 exd4 14. cxd4 c5 15.
d5 c4 $1 16. Bxc4 Bxb2 17. Qxb2 Rxe4 $13 {Bukic - Planinc, Skopje 1971}) 9...
O-O 10. h4 $5 (10. O-O c5 (10... Nd7) 11. Rd1 cxd4 (11... Qc7) 12. cxd4 Nd7)
10... Qd7 $1 11. h5 Qg4 12. hxg6 hxg6 13. Rh4 Qxg2 14. Ke2 Bf6 15. Be3 $5 (15.
Ne1 Qg1 16. Nf3 $11 {Toth,Bela - Horn,Pascal, Biel 1986}) 15... Bxh4 16. Rg1
Qxg1 17. Nxg1 e6 18. Nf3 Be7 $13 {"Looks okay for black" - Kogan}) 5... Ne4 $1
6. Bf4 e6 7. e3 g5 $1 8. Be5 f6 9. Bg3 (9. cxd5 exd5 10. Bg3 h5 11. Qc2 (11.
Qb3 h4 12. Nxe4 (12. Bb5+ c6 13. Bxb8 cxb5 $19) 12... dxe4 13. Qe6+ Qe7 $19)
11... Bb4 $1 $15 {Kogan} 12. Qa4+ Nc6 13. Bb5 Qd7 $1 14. Qxb4 Nxb4 15. Bxd7+
Kxd7 $19) 9... h5 10. h4 Nxg3 11. fxg3 g4 (11... Qd6 12. Kf2 gxh4 13. gxh4 Rg8
{is also good.}) 12. Nd2 Qd6 13. Kf2 Bh6 {threatening sacs on "e3" at the right
moment.} 14. Qc2 Nc6 $5 (14... f5 {with kingside castling is also good.}) 15.
Re1 $6 (15. Qg6+ Kd7 16. Nb5 Bxe3+ 17. Kxe3 Qxg3+ 18. Ke2 a6 19. cxd5 (19. Qf7+
Ne7 20. Nc3 Raf8) 19... Ne7 20. dxe6+ Kxe6 $1 21. Nxc7+ Qxc7 22. Qd3 Rad8
{Black's king is safer.}) 15... O-O-O $17 {Mohandesi - Kogan, Antwerp,BEL
active 1996}; 3. d5 e6 4. a3 (4. Nc3 Bb4; 4. f3 exd5 5. cxd5 Bb4+ 6. Nc3 O-O 7.
e4 Nh5 $5 $15) 4... Ba6 (4... exd5 5. cxd5 Bc5 $5 6. b4 Ne4 (6... Bxf2+ $5 7.
Kxf2 Ne4+ 8. Kf3 $1 (8. Ke3 f5) 8... Qf6+ 9. Kxe4 Qxa1 10. Bf4 $13) 7. e3 Bd6
$13) 5. e3 (5. Qb3 Bc5 6. Nc3 O-O {Stamenkovic - Drazic, Sofia, 1994}) 5...
exd5 6. cxd5 Bxf1 7. Kxf1 Bd6 $11; 3. f3 Nc6 $1 {with the idea of "e5"} 4. d5
(4. e4 e5 5. d5 Nd4 6. Ne2 Bc5) 4... Ne5 5. e4 e6 $15; 3. Bg5 Bb7 4. Nc3
{transposes to the main line.}; 3. g3 Bb7 4. Nf3 {transposes to a "Nf3" line};
3. e3 Bb7 4. Nf3 d5 $5 (4... e6 {transposing to an innocuous line of the
Queen's Indian is good.}; 4... g6) 5. cxd5 Nxd5 6. Ne5 e6; 3. Bf4 Bb7; 3. a3)
3... Bb7 4. Bg5 (4. Qc2 d5 5. cxd5 Nxd5 6. e4 (6. Nxd5 Bxd5 7. e4 Bb7 8. Nf3 e6
9. Bb5+ c6 10. Bd3 Bb4+ 11. Bd2 Bxd2+ 12. Qxd2 Nd7 13. e5 $6 c5 {Varga,Zoltan -
Izsak,Gyula , Budapest 1995}; 6. Nf3 {transposes to the third move
alternative.}) 6... Nxc3 7. bxc3 e5 $5 (7... e6; 7... g6) 8. dxe5 Qh4 $1 9.
Bb5+ Nd7 10. Nf3 Qxe4+ 11. Qxe4 Bxe4 $11 12. Ng5 $6 (12. O-O c6 $1 13. Bc4 Rd8
14. Rd1 Be7 15. Bf4 Nc5 16. Nd4 Na4 $1 $11) 12... Bxg2 13. Rg1 c6 $1 14. Rxg2
$2 (14. e6 Ne5 $13) 14... cxb5 15. e6 fxe6 16. Nxe6 Kf7 $19 {Euwe - Alekhine ,
Budapest 1921}; 4. f3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 e5 $1 (7... e6; 7...
g6) 8. Bc4 (8. Qa4+ Qd7 9. Qxd7+ Nxd7 10. Rb1 Be7 11. Be3 O-O $11 {Lutikov -
Van Geet, Amsterdam 1968}; 8. Ne2 exd4 9. cxd4 Be7 (9... Bd6 $5) 10. Be3 O-O
11. Qb3 Bg5 12. Bf2 Ba6 {Beliavsky - Panchenko, Grozny 1969}; 8. dxe5 Nd7 $1 9.
Bf4 Bc5 10. Bc4 Qh4+ (10... Qe7) 11. Bg3 Qe7 12. e6 fxe6 13. Ne2 e5 $1 {to
prevent "Nd4"}; 8. Bb5+ c6 9. Bc4 Nd7 10. Qb3 Qh4+ 11. Kf1 Qf6 12. Nh3 h6 13.
Nf2 Bd6 $13 {Levitas - Tolush, Leningrad 1938}) 8... exd4 9. Ne2 $1 (9. cxd4
Bb4+ 10. Kf2 O-O $15; 9. Qb3 Qd7 (9... Bc5 $2 10. Bxf7+ Kf8 11. Ne2 Nc6 12. Nf4
$16) 10. cxd4 Nc6 11. Ne2 Na5 $11) 9... d3 $1 {exclams by Kogan in SOS-6} 10.
Nd4 $5 (10. Qxd3 Qxd3 11. Bxd3 Nd7 $15) 10... Bc5 11. Qxd3 (11. Bxf7+ $6 Kxf7
12. Qb3+ Ke8 13. Ne6 d2+ (13... Qf6) 14. Bxd2 Bf2+ {Dignum,Erik - Kogan,Artur,
Utrecht 1999}) 11... Nc6 $11; 4. d5 e6 5. a3 $5 (5. e4 Bb4 6. Bd3 b5 $5 {is a
gambit recommended by Kogan} 7. cxb5 (7. Ne2 bxc4 8. Bxc4 Nxe4 9. Qd4 Nf6 10.
O-O O-O 11. Bg5 Be7 $17 {white has insufficient compensation}) 7... exd5 8. e5
d4 $1 9. exf6 Qxf6 10. Qe2+ Kf8 11. Nf3 Bxf3 12. gxf3 (12. Qxf3) 12... dxc3 13.
O-O a6 $1 $17) 5... Bd6 (5... Be7) 6. Nf3 (6. e4 Be5 $1 7. Qc2 Qe7 8. Be2 Na6
9. f3 c6 $17 {Arlandi,Ennio - Horn,Pascal, Geneve 1988}) 6... O-O 7. e4 (7. Bg5
Be7 (7... h6) 8. Bf4 (8. Qd2) 8... Nh5 9. Bg3 (9. Bd2; 9. Be3) 9... Nxg3 10.
hxg3 f5 $5; 7. g3 exd5 8. cxd5 c6 (8... Na6) 9. Bg2 Nxd5 (9... Na6) 10. Nxd5
cxd5 11. Ng5) 7... exd5 8. exd5 c6 9. Be2 (9. dxc6 dxc6 10. Be2 Qc7 11. O-O
Nbd7 {Bertok - Planinc, Zagreb 1972}) 9... cxd5 10. cxd5 Na6 $15 11. O-O Re8
12. Bg5 (12. b4 $5) 12... Nc5 {Andreasen - Pedersen, Denmark 1988}) 4... e6 5.
Qc2 (5. e4 h6 6. Bxf6 (6. Bh4 g5 7. Bg3 Nxe4 $17) 6... Qxf6 7. Nf3 Bb4 $13 8.
Bd3 c5 $5 9. O-O (9. e5 Qf4 10. O-O Bxf3 11. Qxf3 Qxf3 12. gxf3 Nc6 $17 {Dinser
- Mueller, Oberwinden 2007}) 9... cxd4 10. Nb5 Na6 11. a3 Be7 12. Nfxd4 (12. e5
Qf4 13. Nbxd4 O-O $17 {Axenhus - Downham, IECC Email 1999}) 12... Nc5 $1 13.
Bc2 O-O 14. Nc3 d6 $11 {Stahlberg - Tartakower, Kemeri (Latvia) 1937}) 5... h6
6. Bh4 Be7 7. e4 (7. f3 g5 8. Bg3 d6 $11 {Nilson - Kaupang, Sandefjord 2002};
7. e3 O-O 8. Nf3 c5 {Winants - Mancini, France 2003}) 7... O-O 8. e5 Nd5 $1 9.
Bg3 Nb4 10. Qb3 d5 $15 {Nimzowitsch - Marshall, Bad Kissingen 1928}  *

