Topic Rybka Support & Discussion / Rybka Discussion / 7... Nc6 practically refuted in the 6. Bg5 Najdorf?
The April's fool joke is on whom?
Last night, there was a game in the Danish Championship going like this:
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Qe2
I suspect 15. Qe2 is some kind of a novelty. During the game, some guy said that 15. Qg4 and 15. Qc2 had been investigated in a NIC yearbook (98 and 99 I believe). I checked a batch of playchess games from December 2011, and here, 15. Bf2 had been played convincingly.
I took a look, and the 15. Bf2 move looks very strong. In fact, it seems like the whole 7... Nc6 move is in a huge crisis, at least I could not find any good deviations. I cannot claim with 99.999999% certainty that black is lost after 7... Nc6, but practically speaking, it looks very unattractive for black (if white has access to engines and books :P).
What do you think?
Here is my analysis. At some places, in sub-variations where black is probably certainly lost (from a probabilistic point of view ;-) ), I am sure that refinements can be made; I just made enough analysis to support a conclusion. At any place in the analysis, please share improvements for either side. Please also note, the mainline of the analysis is almost certainly not black's best, but some kind of principled line. The question is, just how inferior a position does black have to accept in order to avoid losing outright after 7... Nc6?
10... dxe5 ?
12... dxe5 ?
13... Rb8 ?
14... Qe3+ ?
Deviations at move 15 ?
[Event "15'/40+15'/40+15'"]
[Site "Copenhagen"]
[Date "2012.02.02"]
[Round "?"]
[White "Deep Rybka 4 x64"]
[Black "Dagh, Nielsen"]
[Result "*"]
[ECO "B96"]
[WhiteElo "2500"]
[BlackElo "2500"]
[Annotator "Dagh,Nielsen"]
[PlyCount "45"]
[EventDate "2012.??.??"]
[TimeControl "40/900:40/900:900"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6
bxc6 9. e5 h6 10. Bh4 g5 (10... dxe5 11. Qxd8+ (11. fxe5 Qxd1+ 12. Rxd1 Nd5 13.
Na4 (13. Ne4 Rb8 14. b3) 13... Rb8 14. Bf2) 11... Kxd8 12. fxe5 g5 13. Bxg5 (
13. Bg3) 13... hxg5 14. exf6) 11. fxg5 Nd5 12. Ne4 Qb6 (12... dxe5 13. Nf6+ (
13. c3 hxg5 (13... Be7)) (13. Qh5 Nf4 (13... Qb6 14. g6 Qe3+ (14... Qxb2 15.
gxf7+ Kd7 16. Rd1 Qb4+ 17. Nd2) 15. Qe2 Qxe2+ 16. Bxe2 fxg6 17. O-O-O) 14. Qf3
Be7) (13. Bg3) 13... Nxf6 14. Qxd8+ Kxd8 15. gxf6) (12... Rb8 13. Qd2 (13. Qd4
Qa5+ 14. c3 Rxb2 15. g6 (15. exd6 Rg8 16. Qc4 Qb6) 15... Rg8 16. gxf7+ Kxf7 17.
g3 dxe5 18. Qxe5 Qb6 19. Be2 Rxe2+ 20. Kxe2 Qe3+) (13. exd6 Rxb2 (13... Bg7) (
13... Qb6 14. Bd3 (14. Qd2 Qxb2 15. Rd1 hxg5) 14... hxg5 15. Bxg5 (15. Bg3) (
15. Bf2) 15... f5 (15... Qxb2 16. O-O Qd4+ (16... f5 17. c3) 17. Kh1 f5 (17...
Qe5 18. h4) 18. Nf6+ Nxf6 (18... Kf7) 19. Bxf5 Qxd1 20. Bg6+ Kd7 21. Raxd1 Nd5
22. c4 Kxd6 23. cxd5 cxd5 24. Bf6 Rg8) 16. d7+ (16. Nf6+ Kf7 17. Nxd5 (17. d7
Nxf6 18. dxc8=Q Rxc8) 17... cxd5) 16... Kxd7 17. Nf6+) 14. Be2 (14. Bf2 Bg7) (
14. Qd4 Rxc2 15. Be2 (15. Qa4 Rb2 16. Rc1 Bd7) 15... Qa5+ 16. Kf1 Rg8) 14...
Qa5+ (14... Qb6) 15. Qd2 (15. c3 hxg5 16. Bxg5 Bg7 17. O-O Nxc3 18. Bh5 (18.
d7+ Bxd7 19. Nd6+ Kf8 20. Rxf7+ Kg8 21. Rxg7+ Kxg7 22. Qd4+ Kg8) 18... O-O 19.
Qf3 Nxe4 20. Bxf7+ Rxf7 21. Qxf7+) 15... Qxd2+ 16. Kxd2 Rb4 17. c4 (17. Bf3
hxg5 18. Bxg5 Bg7) 17... Rb2+ 18. Ke1 Nf4 19. Bf3 hxg5 20. Bxg5 Nd3+) (13. Bd3
dxe5 (13... Qa5+) 14. O-O hxg5 15. Bxg5 Be7 16. Bxe7 Kxe7) (13. Nxd6+ Bxd6 14.
exd6 Rxb2 15. Qd4 Qa5+ 16. Kd1 Nc3+ 17. Kc1 e5 18. Qc4 Qa3 19. Kd2 Nb1+ 20.
Rxb1 Rxb1 21. Qxc6+ Kf8) (13. Be2 Qb6 (13... Qa5+)) (13. c3 Rxb2) (13. c4 Ne3
14. Qd2 (14. Qa4 Be7 15. exd6 (15. Bf2 Rb4 (15... Qb6) 16. Qxc6+ Bd7 17. Nxd6+
Bxd6 18. Qxd6 Rxb2 19. Bxe3 Qa5+ 20. Bd2 Rxd2 21. Qxd2 Qxe5+ 22. Kf2 Qxa1)
15... Bxg5 16. Bxg5 (16. Bg3 O-O) 16... hxg5 17. Rc1 (17. Rb1 O-O 18. Ke2 f5
19. Kxe3 fxe4 20. c5 Qf6 21. Qxe4 Qf2+ 22. Kd3 e5) (17. Kf2 Ng4+ (17... Qb6)) (
17. Ke2 Ng4 (17... Qb6) 18. Qxc6+ Bd7 19. Qc7 Rxb2+ 20. Kd3 Qxc7 21. dxc7 Ke7)
17... Rxb2 (17... f5 18. Qxc6+ Kf7 19. Qc5 Nxf1 20. Rxf1 Rxb2 (20... Bb7 21.
Ng3 f4 22. Ne2) 21. Rf2 Rxf2 22. Nxf2 Rxh2 23. Kf1 g4 24. Qe5) (17... Nxf1 18.
Rxf1 f5 19. Qxc6+) (17... Qb6 18. Nf6+ Kf8) 18. Qa3 (18. Qxc6+ Bd7 19. Qc5 Rh4)
18... Nxg2+ 19. Bxg2 Rxg2 20. Rf1 (20. d7+ Bxd7 21. Rf1 Qb8 (21... Rhxh2)) (20.
Qc3 Rh4 21. Nf6+ Kf8 22. d7) 20... Rhxh2 (20... Bd7 21. Qc3) 21. d7+ Bxd7 22.
Nf6+ Qxf6 23. Rxf6 Re2+ 24. Kf1 Rxa2 25. Qf3 g4 26. Qe4 Ke7 27. Rf4 f5 28. Rxf5
Rae2 29. Qxg4 exf5 30. Qxe2+ Rxe2 31. Kxe2) 14... d5 15. Nf6+ (15. Nd6+ Bxd6
16. exd6 d4 (16... hxg5 17. Bf2 Nxf1 18. Rxf1 e5) 17. Bf2 (17. Bg3 e5 18. Bxe5
Rxb2 19. Qxb2 Qa5+) 17... hxg5 (17... Qxg5 18. Bxe3 dxe3 19. Qc3 e5 20. g3) 18.
Bxe3 dxe3 19. Qc3 Rh6) (15. cxd5 Bb4 16. Nc3 Nxd5) 15... Qxf6 16. gxf6 (16.
exf6 Bb4 17. cxd5 Nxf1 18. Rxf1 Bxd2+ 19. Kxd2 hxg5 20. Bg3 Rxb2+ 21. Kc3) (16.
Qxe3 Bb4+) 16... Bb4 17. b3 (17. Rb1 Rg8 18. Bg3 h5 19. Be2 Nxc4 20. Bxc4 dxc4
21. Rf1 (21. Qxb4)) (17. cxd5 cxd5 18. Rb1 (18. b3 Rg8 19. Bg3 (19. Qxb4 Rxb4
20. Rc1 Nxg2+ 21. Kd2 Kd7) 19... Nc2+ 20. Kd1 Bxd2 21. Kxc2 Be3 22. Re1 (22.
Bd3 Bb7 23. Rae1 d4 24. Re2)) 18... Rg8 (18... Nc2+ 19. Kd1 Bxd2 20. Kxd2 (20.
Kxc2 Be3) 20... Na3 21. Rc1 Rxb2+ 22. Kc3) 19. Bg3 Nc2+ 20. Kd1 Bxd2 21. Kxc2 (
21. Kxd2 Na3) 21... Be3 22. Be2) 17... dxc4 (17... Rg8 18. Bg3 dxc4 19. bxc4
Nxf1 20. Rxf1) 18. bxc4 Rg8 (18... Nxg2+ 19. Bxg2 Bxd2+ 20. Kxd2 (20. Ke2)
20... Rb2+ 21. Kc3 Rxg2 22. Rad1) (18... Nxf1 19. Rxf1 Rg8 (19... Bxd2+ 20.
Kxd2 Rb2+ 21. Kc3 Rxg2 22. Bg3) 20. Bg3 Rg4 21. Rf4 Bxd2+ 22. Kxd2) 19. Bg3 Rg4
(19... Nxf1 20. Rxf1 Rg4 21. Rf4) (19... h5 20. Rc1 Bxd2+ 21. Kxd2 Nxf1+ 22.
Rhxf1) 20. Be2 Rd4 21. Qxb4 Rxb4 22. Kf2 Nxc4 23. Rhd1) (13. b3 dxe5 (13... Qb6
14. Qd2 dxe5 15. Bg3 Qc7) (13... Qa5+ 14. Qd2 Qxd2+ 15. Kxd2 dxe5 16. c4 (16.
Nf6+ Ke7 (16... Nxf6 17. gxf6) 17. Nxd5+ (17. Ng4 hxg5 18. Bxg5+ f6 19. Nxe5
Ke8 20. Nxc6 Rb6 21. c4)) 16... Bb4+ 17. Kc2 (17. Kc1 Ba3+ 18. Kb1 hxg5 19.
Bxg5 f5 20. cxd5 fxe4 21. dxc6 Rb6) 17... Ne3+ 18. Kb2 (18. Kd3 Nf5 19. Bg3
Nxg3 20. hxg3) 18... hxg5 (18... Nf5 19. Bg3 Nxg3 20. hxg3 Bf8 21. Be2) 19.
Bxg5 Nxf1 20. Nf6+ Kf8 21. Raxf1) 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ (
16... Kc7 17. O-O-O) 17. Kf2 Bb7 18. Rd1+ Kc7 19. Bg3 Bc5+ 20. Kf3 Bd6 21. Be2
(21. Bd3 c5+ 22. Be4 Bxe4+ 23. Kxe4 Rhg8 24. Rhe1 Rg4+ 25. Kf3) 21... Rbg8 (
21... c5+ 22. Ke3 Bxg2 23. Rhg1 Bb7 24. Bh5) (21... Rbd8 22. Rd2 Rhg8 23. Rhd1
Rg5) 22. Ke3 (22. Kf2 c5 (22... Bc5+)) 22... Bc5+ (22... Rg5 23. Bf3 Rd8) 23.
Kd2 (23. Kd3 Bd6 (23... Rg5 24. Bf3)) (23. Ke4 Bd4 24. Kd3 Rd8 25. c3 Bf2+ 26.
Kc4 Bxg3 27. hxg3 Kb6 28. b4 c5) 23... Rg5 24. Bf3 h5 (24... a5 25. Kc1) 25.
Ke2 h4 26. Be1) 13... Rxb2 (13... dxe5 14. Nf6+ (14. O-O-O hxg5 (14... Qb6 15.
b3 hxg5 16. Bg3 Rh4 (16... Qc7 17. Nf6+ Ke7 18. Ng4 (18. Ne4) 18... f6 19. Nxe5
fxe5 (19... Ke8 20. Ng4 e5 21. Nxf6+ Nxf6 22. Bd3 Nd5 23. Bxe5 (23. Bg6+)) 20.
Qxg5+ Kf7 (20... Ke8 21. Qxe5) 21. Be2 Bg7 22. Rhf1+ (22. Bh5+) 22... Kg8 23.
Rd4 (23. Bh5 Rxh5 24. Qxh5 Nf4)) 17. Bf2 Ba3+ 18. Kb1 Qb4 19. Qxb4 Bxb4 20.
Bxh4 gxh4 21. c4 Nb6) 15. Bg3 (15. Bxg5 Qb6 16. b3 (16. c4 Ba3 17. cxd5 exd5
18. Nf6+ Kf8 19. Re1 Qc5+ (19... Qxb2+) 20. Qc2 Bxb2+ 21. Kd1) 16... f5 17.
Nf6+ Nxf6 18. Bxf6 Bh6 19. Bg5 Qd4) 15... Qc7 16. Nf6+ (16. c4 f5 17. cxd5
cxd5+ 18. Qc3 Qxc3+ 19. Nxc3 f4) 16... Ke7 17. Ng4 (17. Ne4 Bh6) 17... f6 18.
h4 (18. Nxe5 fxe5 19. Qxg5+ Ke8 (19... Kf7 20. Be2) 20. Qxe5 (20. Qg6+ Ke7 21.
Be2 Bh6+ 22. Kb1 Qa5) 20... Bh6+ 21. Kb1 Bg7 22. Qxc7 Nxc7 23. Bxc7 Rxb2+ 24.
Kc1 Rxa2 25. Bc4) 18... Bg7 19. h5 Rd8) 14... Nxf6 15. Qxd8+ Kxd8 16. gxf6 h5 (
16... Bb4+ 17. c3 Bd6 18. O-O-O) (16... Bd6 17. O-O-O) (16... Rb4 17. O-O-O+
Kc7 (17... Rd4 18. Be2) 18. Bg3 Bd6 19. c4) 17. O-O-O+ Kc7 18. Be2) 14. Bc4 (
14. a3 Qb6) (14. exd6 Bg7 15. Bc4 hxg5 (15... Qb6)) (14. Nxd6+ Bxd6 15. exd6
hxg5) (14. Bg3 hxg5 (14... dxe5 15. Nf6+ Qxf6 16. gxf6 Bb4)) (14. Bf2 dxe5 15.
Nf6+ Qxf6 16. gxf6 Bb4) 14... dxe5 (14... Qb6 15. Bxd5 (15. Nxd6+ Bxd6 16. exd6
Qe3+ 17. Be2 Qe4) 15... exd5 (15... cxd5 16. Nf6+ Kd8 17. g6 (17. gxh6 Qb4)
17... Qb4 18. Qxb4 Rxb4 19. g4 Kc7 20. c3) 16. Nf6+ Kd8 17. g6 (17. gxh6) 17...
Qb4 18. Qxb4 Rxb4 19. g4 Kc7 20. exd6+ Kxd6 21. c3 Rc4 22. Ne8+ Kd7 23. g7 Bxg7
24. Nxg7 Rxg4 25. Bf6 Rg8 26. Kd2) 15. Nf6+ (15. O-O Be7 (15... Qb6+ 16. Kh1)
16. Rae1 (16. Bg3 Qb6+ 17. Kh1 Qd4 (17... Ne3 18. Bb3 Nxf1 19. Rxf1 Qd4 20. Qe2
) 18. Qxd4 exd4 19. Be5 O-O) (16. g6 Bxh4 (16... f5 17. g7 Rg8 18. Qxh6 Bxh4
19. Qh5+) (16... fxg6 17. Bxe7 Kxe7 18. Rae1 Qb6+ 19. Kh1 a5 20. Qc1 a4 21. Bb3
a3 22. c4) 17. g7 Rg8 18. Qxh6 Be7 (18... Rxc2 19. Qh7 Rxg7 20. Qxg7 f5 21. Bd3
Rb2 22. Rac1) (18... f5 19. Qh5+ Ke7 20. Qxh4+ Kf7 (20... Kd7 21. Qh7) 21. Ng5+
Kg6 22. Rf3 Rxg7) 19. Qh7 Rxg7 20. Qxg7 f5 21. Qxe5 (21. Qh8+ Kd7 22. Qxe5 Rb4
23. Bxd5 cxd5) (21. Bb3 fxe4 22. Qxe5 Bf6 23. Qxe4 Bc3 24. Qg4 Kd7) 21... Rb4
22. Qh8+ Kd7 23. Qxd8+ Kxd8 24. Bxd5 cxd5 25. Nd2) 16... hxg5 (16... Qb6+ 17.
Kh1 Qd4 (17... hxg5 18. Bxg5) 18. Qc1 hxg5 (18... Rb4 19. g6) 19. Bxg5) 17.
Bxg5 Bxg5 (17... f5 18. Bxe7 Kxe7 (18... Qxe7 19. Bxd5 exd5 20. Qc3 dxe4 21.
Qxb2) 19. Qg5+ Kf7 20. Qg3 f4 (20... Qc7 21. Ng5+) (20... Qb6+ 21. Kh1) 21. Bb3
) 18. Nxg5 Qb6+ (18... f6 19. Ne4 f5 20. Bxd5 cxd5 21. Qc3 dxe4 22. Qxb2 Qd4+
23. Qxd4 exd4) 19. Kh1 Qd4 20. Qc1 f5 21. Nf3 (21. Bxd5 cxd5 22. Nf3 Qc3) (21.
Ne4) 21... Qc3 22. Nxe5 Qg3 23. Nf3 Nf4 (23... Rb4) 24. Qd2 c5 25. Qf2 (25. Re5
Rb6) 25... Qxg2+ (25... Qxf2 26. Rxf2 Bb7) 26. Qxg2 Nxg2 27. Kxg2 Rxc2+ 28. Be2
Rxa2) 15... Nxf6 (15... Qxf6 16. gxf6 Bb4 17. Bb3 Rg8 (17... c5 18. Qxb4 (18.
Bg3 Bxd2+ (18... Rg8 19. Qxb4 cxb4 20. Bxd5) 19. Kxd2 Rg8 20. Rhg1) 18... cxb4
19. Bg3 Rxb3 (19... Rg8 20. Bxd5 exd5 21. Kd1 Bf5 22. Re1) (19... Nc3 20. Bxe5)
20. axb3) 18. g3 (18. Qxb4 Nxb4 19. O-O-O Rxa2 20. Bxa2 Nxa2+ 21. Kb2 Nb4)) 16.
Qxd8+ Kxd8 17. O-O-O+ Nd5 18. Kxb2 Be7 (18... hxg5 19. Bxg5+ Ke8 (19... Kc7 20.
h4) 20. Bb3) 19. Bg3 hxg5 20. Bxe5 f6 21. Bg3 Ke8) 13. c3 dxe5 (13... Qxb2 14.
Rb1 Qxa2 (14... Qa3 15. g6 fxg6 16. Bd3 (16. Qg4) (16. Bc4) (16. Qf3)) 15. g6
fxg6 16. Bd3 Nf4 (16... Qxg2 17. Rf1 Qxh2 (17... Rg8 18. c4) (17... Kd7 18. c4
(18. Bg3)) (17... Be7 18. Bxe7 Kxe7 19. exd6+) (17... dxe5 18. Qa4) 18. Qg4 (
18. Nxd6+ Bxd6 19. Bxg6+ Kd7 20. Rf7+ Be7 21. Rxe7+ Kd8 22. Qd4 Qh1+ 23. Kd2
Qg2+ 24. Kd3 Qxg6+ 25. Kc4 Qxb1 26. Rb7+ Ke8 27. Rxb1) 18... Be7 19. Bxe7 (19.
Qxg6+ Kd8 20. Bg3 Bh4 21. exd6 Ra7 22. Bxh4+ Qxh4+ 23. Kd2) 19... Kxe7 20.
exd6+ Kd8 21. Qxg6 Qh3 22. Be2) (16... Ne3 17. Nf6+ Kd8 18. Ng4+ g5 19. Nxe3) (
16... Be7 17. Bxe7 Qxg2 18. Rf1) 17. Nf6+ Kf7 (17... Kd8 18. Nd5+ g5 19. Nxf4)
18. Bxg6+ (18. Be4 dxe5 (18... Qc4 19. Qf3 g5 (19... dxe5 20. Rb6 (20. Ng4 Bg7
21. Rb4 Qc5 22. Bf2 Qd6 23. g3 g5)) 20. Bf2 Be7 21. g3 (21. Rb4 Qa2 22. Bb1 Qa5
23. O-O Bxf6 24. exf6)) 19. Ng4) 18... Kxg6 (18... Nxg6 19. O-O) 19. Qg4+ Kf7
20. O-O Qxg2+ 21. Qxg2 Nxg2 22. Kxg2 dxe5 (22... Kg6 23. Rf3) (22... a5 23.
exd6) (22... d5 23. Kh3 (23. Rf3)) 23. Rf3 (23. Kh3)) (13... Rb8 14. Qf3 (14.
g6 fxg6 (14... Qe3+ 15. Qe2) 15. Nf6+ Kf7 16. Nxd5 exd5 17. Qf3+ Kg8 18. Bd3
dxe5 (18... Rh7 19. Bf2) 19. Bxg6 Rb7 20. Bf2 Qd8 21. O-O e4 22. Qe2 Qd6 23.
Bd4 (23. Qh5 Rg7 24. Bd4 Qxg6 25. Qxg6 Rxg6 26. Bxh8 Bh3 27. Rf2 e3 28. Rf3
Bxg2 29. Rg3 Rxg3 30. hxg3 Bf3) 23... Bg7 24. Bf5 Bxf5 25. Rxf5 Bxd4+ 26. cxd4
Rhh7 27. Raf1 Rhg7 28. a3 Rbf7 29. Rxf7 (29. Qh5 Rxf5 30. Qxf5) 29... Rxf7 30.
Qxa6 Rxf1+ 31. Qxf1 c5 32. Qf2 cxd4 33. Qxd4 Qe6 34. Kf2 Qf5+ 35. Ke1 Qg5 36.
Qc5 Kg7 37. Qc3+ Kh7 38. g3 Qe7 39. Qd4 Qg5 40. Qc5 Qe5 41. a4) (14. b3 dxe5) (
14. g6 fxg6 (14... Qe3+ 15. Qe2 fxg6 16. b3) 15. Nf6+ (15. Rb1 Qe3+ 16. Qe2
Qxe2+ 17. Bxe2 dxe5) (15. b3 Nxc3 (15... dxe5) 16. Nf6+ Kd8 17. Nd5+ g5 18.
Nxb6 Nxd1) (15. Bf2 Qxb2 16. Rc1) (15. Qg4 Qe3+ 16. Be2 Nf4 17. Rf1 Qxe2+ 18.
Qxe2 Nxe2) 15... Kf7 (15... Nxf6 16. Bxf6) 16. Nxd5 exd5 (16... cxd5 17. Qf3+
Kg8 18. Bd3) 17. Qf3+ Kg8 18. Bd3 dxe5 (18... Rh7) 19. Bxg6 Rb7 20. Bf2 (20.
Rf1) 20... Qd8) (14. Qd3 dxe5 (14... Be7 15. exd6 hxg5 16. Bg3 Qxb2 17. Rd1 Bd8
) (14... Qxb2 15. Rd1) 15. g6 fxg6 (15... Be7 16. gxf7+ Kxf7 17. Qf3+ Ke8 18.
Qh5+ Kd7 19. Bxe7) (15... Qxb2 16. gxf7+ Kxf7 17. Rd1 (17. Qf3+)) 16. Bf6 (16.
Rd1) 16... Nxf6 17. Nxf6+ Ke7 18. Ne4 Bg7 19. b3 (19. b4 Rf8) (19. Be2) 19...
c5 (19... Rf8 20. O-O-O Rd8 21. Qg3 Rxd1+ 22. Kxd1 g5 23. h4) 20. O-O-O Rd8 21.
Qxd8+ Qxd8 22. Rxd8 Kxd8 23. Nxc5) (14. Rb1) 14... Be7 (14... Qxb2 15. Rd1 Be7
16. Bc4 dxe5 17. O-O Nf4 18. g6 Bxh4 19. Nd6+ Ke7 20. Nxf7 Bf6 21. Nxh8) (14...
Qe3+ 15. Qxe3 Nxe3 16. Rb1) 15. b4 (15. exd6 Qxb2 16. Rd1 hxg5 17. Bf2 f5) (15.
b3 dxe5 16. Bg3 (16. Bf2 Qa5 17. Bg3 Nf4) (16. Nf6+ Bxf6 17. gxf6 e4 18. Qxe4
Nxc3 19. Qf4 Rb7 20. Bc4 Nd5 21. Bxd5 Qa5+) 16... hxg5 17. Bxe5 f6 18. Nd6+ (
18. Bxb8 Qxb8 19. Bc4 (19. O-O-O f5 20. Ng3 Bf6) 19... Qe5 (19... g4 20. Qg3
Qxg3+ 21. Nxg3) (19... f5 20. Bxd5 cxd5 21. Ng3) 20. O-O-O g4 21. Qd3 Ba3+ 22.
Kd2 Nf4 (22... Qf4+ 23. Kc2 Ne3+ 24. Kb1 Nxd1 25. Rxd1 Be7) 23. Qd4 Qxd4+ 24.
cxd4 f5 25. Nc5 Bb4+ 26. Kc1 Nxg2) (18. Nxf6+ Nxf6 19. O-O-O (19. Bd3 O-O 20.
O-O-O) 19... O-O (19... Rb7 20. Bd3 O-O (20... Rh6)) 20. Bd3 Rb7 (20... Qa5 21.
Bxb8 Qxa2 22. b4) 21. Kb1) (18. Bg3 Rb7 19. O-O-O) 18... Bxd6 19. Bxd6 Rb7 20.
O-O-O Kf7 (20... g4) 21. Kb2 a5 (21... Qe3 22. Bxa6) 22. Be2 (22. c4 Ne3 23.
Bd3 Nxd1+ (23... Qd4+ 24. Kb1 Kg7 25. Be4) 24. Rxd1 a4) 22... a4 23. Rhf1 f5
24. b4 (24. Be5 axb3 25. a4) 24... Rh4 (24... Ne3 25. Be5 Rh7 (25... Rh6 26.
Qg3) 26. Qg3 Qc5 (26... a3+ 27. Kb3)) 25. Ka3 (25. a3 Ne3) 25... Qe3) 15...
dxe5 (15... Nxb4 16. exd6 Nc2+ 17. Kd2 Nxa1 18. Nf6+ Kf8 19. dxe7+ Kxe7 20. g6
Qb2+ 21. Kd3) (15... hxg5 16. Bf2 (16. Bg3 dxe5 (16... Nxb4 17. cxb4 d5 18. Nd2
Qd4 (18... Bxb4)) (16... g4) 17. Bxe5 f6 18. Nd6+ (18. Bxb8 Qxb8 19. Bc4 f5)
18... Kf8 (18... Bxd6 19. Bxd6 Ra8 20. Bd3 Kf7 21. g3 g4 22. Qe4 f5 23. Qe5)
19. Nc4 (19. Bd4 Qc7 20. Nxc8 Rxc8 21. Bxa6 e5) (19. Bg3) 19... Qa7 20. Bd3 (
20. h4) (20. Be2)) 16... Qc7 17. exd6 Bxd6 18. Nxd6+ Qxd6 19. Rd1 Qe5+ (19...
f5 20. Be2 a5 (20... e5 21. Bc5 (21. Ba7 Rb7 22. Bc5 Qf6 23. c4 g4 24. Qa3 Nf4
25. Rd6 Qg5 (25... Qg7 26. Bf1 O-O (26... Rd7 27. b5) 27. Qc3) 26. Bf1 Rh6)
21... Qf6 22. c4 g4 (22... e4 23. Qf2) 23. Qd3) (20... Qc7 21. c4) (20... g4
21. Qd3) 21. Bc5) (19... a5 20. Be2 f5 21. Bc5) 20. Kd2 Qg7 21. Kc2 (21. Bc4 e5
22. Kc2 Be6 23. Bb3 (23. Rhe1 f6)) 21... g4 (21... a5 22. bxa5 Ra8) 22. Qg3 e5
23. Ba7) 16. Bf2 (16. Bg3 hxg5 (16... Nf4 17. Bxf4 exf4 18. g6 fxg6 19. Qxf4 g5
20. Qg3 (20. Qf3 Rf8 21. Qh5+ Kd8 22. O-O-O+ Kc7) 20... O-O (20... c5 21. Be2
cxb4 (21... O-O 22. h4 g4 23. Qxg4+ Kh7 24. bxc5) 22. Rf1 Rf8 23. Qe5) 21. h4
Rf4 22. Bd3 Qc7) (16... Nxb4 17. Rc1) 17. Bxe5 f6 18. Nd6+ (18. Bxb8 Qxb8 19.
Bc4 f5) 18... Kf8 (18... Bxd6 19. Bxd6 Ra8 20. c4 (20. Be2)) 19. Bd4 (19. Nc4
Qa7 20. Bd3 (20. Be2 Kg7) (20. Bxb8 Qxb8)) 19... Qc7 20. Nxc8 Qxc8 21. Bc4 e5
22. Bc5 (22. Ba7 Ra8 23. Bc5 Qe6 24. O-O Bxc5+)) 16... Qc7 17. g6 fxg6 (17...
O-O 18. Qh5 Kg7 19. gxf7 Rxf7 20. Rd1 (20. Bc4) (20. Qg4+ Kh8 21. Qg6 Bf8 22.
g3 a5 23. a3 (23. Bc5 axb4 24. Bxf8 Rxf8 25. Qxh6+ Kg8 26. c4 Qg7 27. Qxg7+
Kxg7 28. cxd5 exd5 29. Nc5 Rf3) (23. Bd3 axb4 24. c4 Rf5 (24... Ba6 25. Bc5)
25. cxd5 cxd5 26. O-O dxe4 27. Bxe4 Rg5 28. Qf6+ Bg7 29. Rac1) 23... Ra8 24.
Rd1 axb4 25. axb4 Ra2) 20... Rf5 21. Qg4+ Kh7 22. Bd3) 18. Bc4 a5 (18... Rf8
19. Qg3) 19. a3 (19. Qg4 axb4 (19... Kf7 20. O-O Kg7 21. Qg3) 20. Qxg6+ Kd8 21.
O-O bxc3 22. Rac1 Rb4 23. Bd3) 19... Rf8 20. Qg3 (20. Qg4 Kf7) 20... g5 (20...
Nf4 21. O-O Rf5 (21... Kf7 22. Bd4 g5 23. Be3) 22. Bc5 Bxc5+ 23. Nxc5 Kf8 (
23... Rg5 24. Qh4)) (20... Kf7 21. O-O Nf4) 21. O-O (21. Qg4 c5 22. Bxc5 (22.
O-O cxb4 23. cxb4 Nf4) (22. Qh5+ Rf7) 22... Bxc5 23. Nxc5 Ke7 24. Rf1) (21. Bd3
Rf4 (21... Nf4) 22. O-O) 21... Rf4 22. Qd3 (22. Bd3 Kf7) (22. Rae1 Kf7) 22...
Kf8 23. Bb3 (23. Ng3 Nf6) (23. g3) (23. Qc2) 23... Rf5 24. Nc5 (24. Rad1) 24...
Kg8 25. Bc2 Ra8) (13... Qe3+ 14. Qe2 Qxe2+ 15. Bxe2 dxe5 16. g6 (16. Nf6+ Nxf6
17. gxf6 Bb7) 16... fxg6 17. Nf6+ (17. O-O-O Be7 18. Bxe7 Kxe7 19. Bf3) 17...
Kf7 18. O-O Nf4 19. Ng4 g5 (19... Bc5+ 20. Kh1) 20. Nxe5+ Kg7 (20... Kf6 21.
Nxc6 e5 (21... Bc5+) 22. Rxf4+ exf4 23. Bf2)) 14. g6 fxg6 (14... Qe3+ 15. Qe2
Qxe2+ (15... fxg6 16. Qxe3 (16. Nf6+ Kf7 17. Ng4 Qxe2+ 18. Bxe2 Bg7 19. O-O+
Kg8 (19... Nf4 20. g3 g5 21. gxf4 exf4 (21... gxh4 22. Nxe5+ Bxe5 23. fxe5+)
22. Bf2 e5) 20. Bf6 e4 (20... Bxf6 21. Nxf6+ Kg7 22. Ng4 e4 23. c4 Nb4 24. Ne5)
21. Bxg7 Kxg7) 16... Nxe3 17. Bf6 Rh7 18. Kd2 Nxf1+ 19. Rhxf1 Rf7 20. Rad1 (20.
c4)) 16. Bxe2 fxg6 17. O-O-O (17. Bf3) (17. Nf6+ Kf7 18. Ng4 (18. O-O) 18...
Bg7 19. O-O+ Kg8 20. Bf6) 17... Be7 18. Bxe7 (18. Bg3) 18... Kxe7 19. Bf3 a5 (
19... Rf8) 20. Nf2) 15. Bf2 (15. Qe2) (15. Qg4) (15. Qc2) (15. Qd2) 15... Qxb2
(15... c5 16. Qg4 (16. Qc2 Qc7 (16... Bb7 17. b4 (17. Bc4 O-O-O 18. O-O-O) (17.
O-O-O Be7 18. Bc4 Qc7) 17... Kf7 (17... O-O-O 18. O-O-O Nf4 19. Re1) 18. Bd3 (
18. Bc4 Kg7 19. O-O Nf4 20. Rae1) (18. O-O-O)) 17. Nd2) 16... Nf4 17. O-O-O (
17. Be3 Qb7 (17... Qxb2 18. Rd1 Qc2 19. Qf3) 18. Qf3 Qxb2 19. Rd1 Be7 20. Bc1 (
20. Bxf4 exf4 21. Qxf4) 20... Qb6 21. g3 Nd5) 17... Be7 (17... Bb7 18. Nf6+ Kf7
19. Nd7 Qc7 20. Bc4 (20. Nxe5+ Qxe5 21. Rd7+ Kg8 (21... Be7 22. Rxb7 Rab8 23.
Rxb8 Rxb8 24. Qf3 Qf5 (24... Kg7 25. Bg3) 25. h4 Kg7) 22. Rxb7 Rh7) (20. g3)
20... Bc6 (20... Bd6 21. Rhf1 (21. Bxc5 Bxc5 22. Rhe1 Bd6 23. Rxd6 Qxd6 24.
Nxe5+ Kg7 25. Qxf4 Rhf8 26. Qg4 (26. Qg3 g5 27. Bd3 Rac8 (27... Rad8 28. Qe3))
26... Rf6 27. Bd3 Rd8 28. Kb1 h5 (28... Qc5 29. Bxg6 Qf2 30. Bd3+ Kh8 31. Rf1
Qxf1+ 32. Bxf1 Rxf1+ 33. Kc2 Rf2+ 34. Kb3 Rdd2 (34... Rxg2 35. Qh4 Rdd2 36.
Qxh6+ Kg8 37. Qxe6+ Kg7 38. Qf7+ Kh6 39. Qf6+ Kh7 40. Qf5+) 35. Qg6 Rxb2+ 36.
Kc4 Bd5+ 37. Kc5 Rb7 (37... Rb5+ 38. Kd4) 38. c4) 29. Qg5 Qd5 (29... Bc6) 30.
g3 (30. g4 Qg2 31. a3 (31. Kc1 Rd5) (31. c4 Rd4) 31... Rxd3 (31... Rd5 32. c4)
32. Nxd3) 30... Bc6 31. g4 (31. h4 Be8 32. g4 Rb8 (32... Qg2 33. gxh5 Qxg5 34.
hxg5 Rf2 35. h6+)) (31. h3 Be8 32. g4 Qg2) 31... hxg4 32. Qxg4 Qg2 33. Qb4) (
21. g3 h5 22. Qg5 Qxd7 23. gxf4 Qe7) 21... Bd5 (21... h5 22. Bxe6+ Kg7 (22...
Ke8 23. Qh4 g5 24. Nf6+) 23. Qh4 (23. Qg5 Raf8 24. Nxf8 Rxf8 25. Be3 (25. Bc4))
23... Raf8 (23... Rhf8 24. Bg3 Ne2+ (24... Bxg2 25. Rf2 Bc6 (25... Kh6 26.
Bxf4+) 26. Bxf4 exf4 27. Nxf8 Rxf8 28. Rfd2) 25. Kb1 Nf4) 24. Bg3 Bc6 (24...
Bxg2 25. Rf2)) 22. Bg3 (22. Bxc5 Bxc5 23. Bxd5 exd5 24. Rxd5 Be3+ 25. Kb1 Kg7)
(22. Bxd5 exd5 23. Bh4 (23. Bxc5 Bxc5 24. Rxd5 Be3+ 25. Kb1 Kg7) (23. g3 h5 24.
Nxe5+ (24. Qg5 Qxd7 25. gxf4 Qg4) 24... Bxe5 25. Qf3 Kg7 26. gxf4 Bxf4+ 27. Kb1
) 23... h5 24. Qg5 Qxd7 25. Rxf4+ exf4 26. Qf6+ Kg8 27. Qxg6+ Qg7 28. Qxd6)
22... Rad8 (22... Rhd8 23. Nxe5+ Bxe5 24. Bxf4 Bxf4+ 25. Rxf4+ Kg7 26. Bd3 g5)
23. Nxe5+ Bxe5 24. Bxf4 Bxf4+ 25. Rxf4+ Kg7 26. Bd3 g5) (20... Bd5 21. Bxd5
exd5 22. Rhe1 Bg7 (22... Bd6 23. Bxc5) 23. Nxc5 (23. g3 h5 24. Qf3 Qxd7 25.
gxf4 e4 26. Rxe4) 23... h5 24. Qf3 Kg8) (20... Be7 21. Be3 (21. Rhe1)) 21.
Nxe5+ (21. Nxc5 Bxc5 22. Bxc5) (21. g3 h5 22. Qg5 Nd3+ 23. Kb1 Be7 24. Qe3 Rhd8
) 21... Qxe5 22. Bg3 Qf5 23. Qxf4 Qxf4+ 24. Bxf4 Bxg2 25. Rd7+ Be7 26. Re1 Bh3)
(17... Rb8 18. Rd2 (18. b4 Qc6 19. Nxc5 Be7) (18. b3 Be7 (18... Qc6 19. Qf3 Bb7
20. Nf6+ Kf7 21. Qxc6 Bxc6 22. Nd7 Bxd7 23. Rxd7+) 19. g3 h5 20. Qf3 Nd5 21.
Bc4) 18... Qc6 (18... Be7 19. Be3) 19. Bd3 Be7 (19... c4 20. Bb1) 20. Nxc5 g5
21. Be4 Qb5 22. Nd3 h5 (22... Ba3 23. Ba7)) 18. Be3 (18. g3 h5 19. Qf3 Nd5 20.
Bc4) (18. Bc4) 18... Qc6 (18... Rb8 19. Rd2 (19. b3) 19... h5 (19... Qc6 20.
Qf3) 20. Qg3 Qc6 21. Bxf4 Qxe4 22. Bxe5 Bh4 23. Qf4 Qxf4 24. Bxf4 Rb6) (18...
g5 19. h4) 19. Bd3 (19. Nxc5 h5 (19... g5) 20. Qg3 h4 21. Qg4 g5 22. Bd3 (22.
Nd3) 22... Qxg2 23. Qxg2 Nxg2 24. Rhf1 Rh6) 19... h5 20. Qf3 Bb7 21. Bxf4 exf4
22. Qxf4 (22. Nxc5 Qxf3 23. Bxg6+ Kf8 24. Nxe6+ Kg8 25. gxf3 Bxf3) 22... O-O-O
23. Bc2) (15... Qc7 16. Nc5 (16. Bd3 Be7 17. Qg4 Nf4 18. O-O) (16. Qg4 Qg7) (
16. Qc2) (16. Bc4 Be7 17. Qg4 (17. Qf3 Rf8 (17... Rb8 18. O-O-O Rf8 19. Qg3 Kf7
20. Rhf1 Nf4 21. Bc5 Bxc5 22. Nxc5) 18. Qg3 Nf4 19. O-O) 17... Kf7 18. O-O (18.
h4 Kg7 19. O-O-O) 18... Kg7 19. Qg3 h5 (19... c5 20. b4 Nf4) 20. h4 c5 21. b4
Nf4 22. Nxc5) 16... Bd6 (16... Bg7 17. Bd3 O-O (17... Nf4 18. Be4 O-O 19. O-O
Rb8) 18. O-O Nf4 (18... g5)) 17. Qc2 (17. Qg4 Qg7) 17... Qg7 (17... Qf7) 18. c4
(18. Bd3 O-O 19. O-O) (18. O-O-O Rb8 19. Kb1) 18... O-O 19. cxd5 (19. O-O-O)
19... cxd5 (19... exd5) 20. Rc1 e4 21. Be2) (15... Qb7 16. Bd3 Qxb2 17. Rb1)
16. Rb1 Qxa2 (16... Qa3 17. Qg4 Rg8 (17... Nf4 18. g3) (17... Rh7 18. Bc4 Rf7
19. O-O g5 (19... Nf4 20. Be3 g5 (20... h5 21. Qg3 Qa5 22. Bxf4) 21. g3) 20. g3
Rf5 21. Bd3 (21. Qh5+)) (17... Qe7 18. Bd3 (18. Bc4 Qg7 19. O-O Be7) (18. c4)
18... Qg7 19. O-O h5 20. Qd1 Be7 21. Qa4 Bd7 22. Rb7) 18. Bc4 (18. Bd3 Be7 19.
O-O Nf4) 18... Be7 (18... h5 19. Qg3 (19. Qg5 Qe7 20. Qxe5 Qg7 21. Qg3 (21.
Bxd5 Qxe5 22. Bxc6+ Bd7 23. Bxa8) 21... Be7 22. O-O (22. Bd4 e5) 22... h4 23.
Qg4 (23. Qd3)) 19... Nf4 20. Qf3 (20. Nf6+) (20. Be3) 20... Be7 21. O-O Bd7 22.
Rb7) (18... a5 19. O-O (19. Qg3) 19... Be7 20. Rbe1) 19. O-O h5 (19... Nf4 20.
Be3) (19... Bd7 20. Rb7 (20. Rb3 Qa5) (20. Qg3) 20... Qa5 (20... h5 21. Qf3 (
21. Qg3)) 21. Qf3 (21. Rfb1)) (19... a5 20. Rbe1) (19... Rg7) 20. Qg3 Qa5 (
20... Qa4 21. Qxe5 (21. Bd3) 21... Qxc4 22. Nd6+ Bxd6 23. Qxd6) (20... Nf4 21.
Qf3 (21. Bd4) 21... Rf8 (21... Nd5 22. Rb3) (21... Bd7 22. Rb7 (22. Bd4)) 22.
Nf6+ Kf7 23. Nxh5 gxh5 24. Qxc6) 21. Kh1 (21. Qxe5 Qc7 22. Qd4) (21. Be3 h4 (
21... Qa4 22. Bd3) 22. Qxe5 Qc7) (21. Rbd1 Qc7 22. Kh1) 21... Qc7 (21... Bd7
22. Rb7) 22. Be3 (22. Rbd1) 22... h4 23. Qf3) 17. Bd3 Be7 (17... Rh7 18. O-O
Rf7 19. g3 (19. Ra1 Qb2 20. Qa4 Bd7 21. Rfb1 Rxf2 22. Rxb2 (22. Nxf2 Qxc3)
22... Rxb2 23. Rf1 Rab8 24. Qa5 Nf4 25. Qxe5) (19. Nd6+)) (17... Qa5 18. O-O
Be7) (17... Rg8 18. O-O) (17... Bg7 18. Nd6+ Kd7 19. Nc4) (17... h5 18. O-O Be7
19. c4) (17... Nf4 18. g3) 18. O-O Qa5 (18... h5 19. c4) (18... O-O 19. Ra1 Qb2
20. Qg4 g5 21. Rfb1 (21. Qh5 Kg7 22. Rfb1 Nf4 (22... Rxf2 23. Rxb2 Rxb2 24. Rf1
) 23. Qf3 Nxd3 24. Qxd3 Rd8 25. Qg3) 21... Rxf2 22. Rxb2 Rxb2 23. Qh5) (18...
Nf4 19. g3 Nh3+ (19... Nxd3 20. Qxd3 Rf8 21. c4 Qa3 22. Rb3 Qa5 23. Bb6) 20.
Kg2 Nxf2 21. Rxf2 Qd5 22. Qg4 (22. c4)) (18... Rg8 19. g3 (19. Ra1 Qb2)) 19.
Qg4 (19. c4 O-O 20. cxd5 exd5 21. Bb6 (21. Qc1 dxe4 22. Bxe4 Bf5) (21. Ng3)
21... Qa3 (21... Rxf1+ 22. Qxf1 Qa3 23. Nf6+ Kh8 24. Bc7) 22. Rxf8+ (22. Qc2
dxe4 23. Qxc6 exd3 24. Qxg6+ Kh8 25. Qxh6+ Kg8 26. Qg6+ Kh8) 22... Bxf8 (22...
Kxf8 23. Rb3 (23. Qf1+) 23... Qa4 24. Nf2 Bf5 (24... Bg5 25. Bxg6) (24... g5
25. Qc2) 25. Bxf5 gxf5 26. Nd3) 23. Nf6+ Kh8 24. Rc1 (24. Qc2 Rb8 25. Kh1 Be6
26. Bxg6 Qe7) (24. Bxg6 Rb8 25. Bf2 Rxb1) 24... Qd6 (24... Qe7 25. Qf1 (25.
Rxc6 Bb7 26. Nxd5 (26. Ng8 Kxg8 27. Rxg6+ Bg7 28. Be3 Rc8 29. Bxh6 Qc5+ 30. Kh1
Rc7 31. Bf5 Kf8 32. Rf6+ Rf7 33. Rxf7+ Kxf7 34. Qh5+ Kf8 35. Bxg7+ Kxg7) 26...
Qd7 27. Ne7 Bxe7 28. Rxg6 Bg5 29. Rxg5 hxg5 30. Qh5+ Kg8 31. Bc4+ (31. Qxg5+
Qg7 32. Bc4+ Kh7) 31... Bd5 32. Qxg5+ Kf7 33. Qh5+ (33. Qd2 Rd8 34. Bxd8 Qa7+
35. Qf2+ (35. Kh1 Bxc4) 35... Qxf2+ 36. Kxf2 Bxc4)) 25... Bg7 26. Rxc6 Qf7 27.
Bc5 e4 28. Be2 Be6 29. Qf4 (29. Bg4 Bxg4 30. Nxg4 Qxf1+ 31. Kxf1 a5 32. Rxg6 a4
33. Ba3 d4 34. Re6 e3 35. Nxh6 d3 36. Rxe3 d2 37. Nf7+ Kg8 38. Rd3 Kxf7 39.
Rxd2) 29... Bxf6 30. Rc7 Bd7 31. Bg4 Rb8 32. Qf1 Rd8 33. Rxd7 Rxd7 34. Bxd7)
25. Ne8) (19. Qf3 Qc7 (19... Rf8 20. Qg3 g5 (20... Nf4 21. Bb6 Qd5 22. Rxf4
exf4 23. Qxg6+ Rf7 24. Qg8+ Bf8 25. Rd1) (20... Rg8 21. c4 Nf4 22. Bb6) (20...
Rf7 21. Qxe5) 21. Qxe5 (21. Qh3) 21... Qc7 (21... Qd8 22. Bc5) (21... Rf5 22.
Nd6+ (22. Qh8+) 22... Bxd6 23. Qxd6) 22. Qg7 Rb8 (22... Nf4 23. Nxg5 (23. g3))
(22... a5 23. Bd4 Nf4 24. g3) (22... c5 23. Bg3 Nf4 24. Bxf4 gxf4 25. Be2) (
22... Rf5 23. Bd4) 23. Rbd1 Kd8 24. Qxh6 (24. Bd4)) (19... h5 20. Nd2) (19...
Nf4 20. g3 O-O 21. gxf4) 20. g3 Rf8 (20... Rb8 21. Rxb8 Qxb8 22. c4) 21. Qg4
Rg8 22. Nc5) 19... Nf4 (19... Rg8 20. Rb7 (20. Ra1 Qc7 21. Nc5 Nf4 22. Be4 Bd6)
20... Bd7 (20... Kd8 21. Rxe7 Nxe7 22. Qh4 Re8 (22... Rb8 23. Bc5) 23. Bc5) 21.
Bh4 g5 22. Qh5+ Kd8 23. Bf2) 20. g3 h5 21. Qf3 Nh3+ (21... Nd5 22. c4 (22. Ra1
Qc7 23. Nc5) (22. Nd2 Qxc3 23. Nc4 Rf8 24. Bxg6+ Kd8 25. Bb6+ Kd7 26. Qe4 Rxf1+
27. Rxf1) (22. Ra1 Qc7) 22... Rf8 23. Qd1 Nb4 (23... Qc7 24. cxd5 (24. Qc1)
24... exd5 (24... cxd5) 25. Bb6 Qd7 (25... Qb8 26. Nf6+) 26. Nf6+ (26. Qc2)
26... Rxf6 27. Rxf6 Bxf6 28. Bxg6+ Ke7 29. Qc2 Qe6 30. Rf1 Bd7 31. Bc7) (23...
Bd7 24. cxd5 cxd5 (24... exd5 25. Bb6 (25. Nd6+ Bxd6 26. Bxg6+ Ke7 27. Qxh5 Bc5
(27... Bc7 28. Qg5+) 28. Qxe5+) 25... Qa3 26. Qc2 Rf5 (26... dxe4 27. Bxe4 Rf5
28. Qc4) 27. Nc5) 25. Qc1 (25. Ng5 e4 (25... Bxg5 26. Bxg6+ Ke7 27. Qxh5 Be3 (
27... Bd2 28. Rb6 Kd8 29. Rfb1)) 26. Nxe4) 25... dxe4 26. Bxe4 Rc8 27. Qh6 Bc5
28. Qxg6+ Kd8 29. Qg5+ Be7 30. Qxh5) 24. Be2 (24. Nf6+ Rxf6 25. Bxg6+ Rxg6 26.
Qxh5 Kd8 27. Qxg6 c5 28. Rfd1+ Kc7 29. Rxb4 Qxb4 30. Qf7) 24... Nd5 (24... Qd8
25. Qc1 Rxf2 (25... Nd3 26. Qh6 Nxf2 27. Rxf2 Rxf2 28. Kxf2 Qd4+ 29. Kf3) 26.
Nxf2) 25. Qc1) (21... O-O 22. gxf4 Rxf4 (22... exf4 23. Kh1 (23. Rb6)) 23. Qg2
(23. Qe2)) 22. Kg2 Nxf2 23. Nxf2 *
EDIT: Added a bit more analysis after 13... Rb8, including Weirwindle's idea of 14. Qd3.
EDIT: Added analysis of Weirwindle's suggestion of 12... Rb8.
EDIT: Added a lot of analysis after Weirwindle's suggestions and own investigations.
EDIT: Added some more analysis, last update for today.
Last night, there was a game in the Danish Championship going like this:
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Qe2
I suspect 15. Qe2 is some kind of a novelty. During the game, some guy said that 15. Qg4 and 15. Qc2 had been investigated in a NIC yearbook (98 and 99 I believe). I checked a batch of playchess games from December 2011, and here, 15. Bf2 had been played convincingly.
I took a look, and the 15. Bf2 move looks very strong. In fact, it seems like the whole 7... Nc6 move is in a huge crisis, at least I could not find any good deviations. I cannot claim with 99.999999% certainty that black is lost after 7... Nc6, but practically speaking, it looks very unattractive for black (if white has access to engines and books :P).
What do you think?
Here is my analysis. At some places, in sub-variations where black is probably certainly lost (from a probabilistic point of view ;-) ), I am sure that refinements can be made; I just made enough analysis to support a conclusion. At any place in the analysis, please share improvements for either side. Please also note, the mainline of the analysis is almost certainly not black's best, but some kind of principled line. The question is, just how inferior a position does black have to accept in order to avoid losing outright after 7... Nc6?
10... dxe5 ?
12... dxe5 ?
13... Rb8 ?
14... Qe3+ ?
Deviations at move 15 ?
[Event "15'/40+15'/40+15'"]
[Site "Copenhagen"]
[Date "2012.02.02"]
[Round "?"]
[White "Deep Rybka 4 x64"]
[Black "Dagh, Nielsen"]
[Result "*"]
[ECO "B96"]
[WhiteElo "2500"]
[BlackElo "2500"]
[Annotator "Dagh,Nielsen"]
[PlyCount "45"]
[EventDate "2012.??.??"]
[TimeControl "40/900:40/900:900"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6
bxc6 9. e5 h6 10. Bh4 g5 (10... dxe5 11. Qxd8+ (11. fxe5 Qxd1+ 12. Rxd1 Nd5 13.
Na4 (13. Ne4 Rb8 14. b3) 13... Rb8 14. Bf2) 11... Kxd8 12. fxe5 g5 13. Bxg5 (
13. Bg3) 13... hxg5 14. exf6) 11. fxg5 Nd5 12. Ne4 Qb6 (12... dxe5 13. Nf6+ (
13. c3 hxg5 (13... Be7)) (13. Qh5 Nf4 (13... Qb6 14. g6 Qe3+ (14... Qxb2 15.
gxf7+ Kd7 16. Rd1 Qb4+ 17. Nd2) 15. Qe2 Qxe2+ 16. Bxe2 fxg6 17. O-O-O) 14. Qf3
Be7) (13. Bg3) 13... Nxf6 14. Qxd8+ Kxd8 15. gxf6) (12... Rb8 13. Qd2 (13. Qd4
Qa5+ 14. c3 Rxb2 15. g6 (15. exd6 Rg8 16. Qc4 Qb6) 15... Rg8 16. gxf7+ Kxf7 17.
g3 dxe5 18. Qxe5 Qb6 19. Be2 Rxe2+ 20. Kxe2 Qe3+) (13. exd6 Rxb2 (13... Bg7) (
13... Qb6 14. Bd3 (14. Qd2 Qxb2 15. Rd1 hxg5) 14... hxg5 15. Bxg5 (15. Bg3) (
15. Bf2) 15... f5 (15... Qxb2 16. O-O Qd4+ (16... f5 17. c3) 17. Kh1 f5 (17...
Qe5 18. h4) 18. Nf6+ Nxf6 (18... Kf7) 19. Bxf5 Qxd1 20. Bg6+ Kd7 21. Raxd1 Nd5
22. c4 Kxd6 23. cxd5 cxd5 24. Bf6 Rg8) 16. d7+ (16. Nf6+ Kf7 17. Nxd5 (17. d7
Nxf6 18. dxc8=Q Rxc8) 17... cxd5) 16... Kxd7 17. Nf6+) 14. Be2 (14. Bf2 Bg7) (
14. Qd4 Rxc2 15. Be2 (15. Qa4 Rb2 16. Rc1 Bd7) 15... Qa5+ 16. Kf1 Rg8) 14...
Qa5+ (14... Qb6) 15. Qd2 (15. c3 hxg5 16. Bxg5 Bg7 17. O-O Nxc3 18. Bh5 (18.
d7+ Bxd7 19. Nd6+ Kf8 20. Rxf7+ Kg8 21. Rxg7+ Kxg7 22. Qd4+ Kg8) 18... O-O 19.
Qf3 Nxe4 20. Bxf7+ Rxf7 21. Qxf7+) 15... Qxd2+ 16. Kxd2 Rb4 17. c4 (17. Bf3
hxg5 18. Bxg5 Bg7) 17... Rb2+ 18. Ke1 Nf4 19. Bf3 hxg5 20. Bxg5 Nd3+) (13. Bd3
dxe5 (13... Qa5+) 14. O-O hxg5 15. Bxg5 Be7 16. Bxe7 Kxe7) (13. Nxd6+ Bxd6 14.
exd6 Rxb2 15. Qd4 Qa5+ 16. Kd1 Nc3+ 17. Kc1 e5 18. Qc4 Qa3 19. Kd2 Nb1+ 20.
Rxb1 Rxb1 21. Qxc6+ Kf8) (13. Be2 Qb6 (13... Qa5+)) (13. c3 Rxb2) (13. c4 Ne3
14. Qd2 (14. Qa4 Be7 15. exd6 (15. Bf2 Rb4 (15... Qb6) 16. Qxc6+ Bd7 17. Nxd6+
Bxd6 18. Qxd6 Rxb2 19. Bxe3 Qa5+ 20. Bd2 Rxd2 21. Qxd2 Qxe5+ 22. Kf2 Qxa1)
15... Bxg5 16. Bxg5 (16. Bg3 O-O) 16... hxg5 17. Rc1 (17. Rb1 O-O 18. Ke2 f5
19. Kxe3 fxe4 20. c5 Qf6 21. Qxe4 Qf2+ 22. Kd3 e5) (17. Kf2 Ng4+ (17... Qb6)) (
17. Ke2 Ng4 (17... Qb6) 18. Qxc6+ Bd7 19. Qc7 Rxb2+ 20. Kd3 Qxc7 21. dxc7 Ke7)
17... Rxb2 (17... f5 18. Qxc6+ Kf7 19. Qc5 Nxf1 20. Rxf1 Rxb2 (20... Bb7 21.
Ng3 f4 22. Ne2) 21. Rf2 Rxf2 22. Nxf2 Rxh2 23. Kf1 g4 24. Qe5) (17... Nxf1 18.
Rxf1 f5 19. Qxc6+) (17... Qb6 18. Nf6+ Kf8) 18. Qa3 (18. Qxc6+ Bd7 19. Qc5 Rh4)
18... Nxg2+ 19. Bxg2 Rxg2 20. Rf1 (20. d7+ Bxd7 21. Rf1 Qb8 (21... Rhxh2)) (20.
Qc3 Rh4 21. Nf6+ Kf8 22. d7) 20... Rhxh2 (20... Bd7 21. Qc3) 21. d7+ Bxd7 22.
Nf6+ Qxf6 23. Rxf6 Re2+ 24. Kf1 Rxa2 25. Qf3 g4 26. Qe4 Ke7 27. Rf4 f5 28. Rxf5
Rae2 29. Qxg4 exf5 30. Qxe2+ Rxe2 31. Kxe2) 14... d5 15. Nf6+ (15. Nd6+ Bxd6
16. exd6 d4 (16... hxg5 17. Bf2 Nxf1 18. Rxf1 e5) 17. Bf2 (17. Bg3 e5 18. Bxe5
Rxb2 19. Qxb2 Qa5+) 17... hxg5 (17... Qxg5 18. Bxe3 dxe3 19. Qc3 e5 20. g3) 18.
Bxe3 dxe3 19. Qc3 Rh6) (15. cxd5 Bb4 16. Nc3 Nxd5) 15... Qxf6 16. gxf6 (16.
exf6 Bb4 17. cxd5 Nxf1 18. Rxf1 Bxd2+ 19. Kxd2 hxg5 20. Bg3 Rxb2+ 21. Kc3) (16.
Qxe3 Bb4+) 16... Bb4 17. b3 (17. Rb1 Rg8 18. Bg3 h5 19. Be2 Nxc4 20. Bxc4 dxc4
21. Rf1 (21. Qxb4)) (17. cxd5 cxd5 18. Rb1 (18. b3 Rg8 19. Bg3 (19. Qxb4 Rxb4
20. Rc1 Nxg2+ 21. Kd2 Kd7) 19... Nc2+ 20. Kd1 Bxd2 21. Kxc2 Be3 22. Re1 (22.
Bd3 Bb7 23. Rae1 d4 24. Re2)) 18... Rg8 (18... Nc2+ 19. Kd1 Bxd2 20. Kxd2 (20.
Kxc2 Be3) 20... Na3 21. Rc1 Rxb2+ 22. Kc3) 19. Bg3 Nc2+ 20. Kd1 Bxd2 21. Kxc2 (
21. Kxd2 Na3) 21... Be3 22. Be2) 17... dxc4 (17... Rg8 18. Bg3 dxc4 19. bxc4
Nxf1 20. Rxf1) 18. bxc4 Rg8 (18... Nxg2+ 19. Bxg2 Bxd2+ 20. Kxd2 (20. Ke2)
20... Rb2+ 21. Kc3 Rxg2 22. Rad1) (18... Nxf1 19. Rxf1 Rg8 (19... Bxd2+ 20.
Kxd2 Rb2+ 21. Kc3 Rxg2 22. Bg3) 20. Bg3 Rg4 21. Rf4 Bxd2+ 22. Kxd2) 19. Bg3 Rg4
(19... Nxf1 20. Rxf1 Rg4 21. Rf4) (19... h5 20. Rc1 Bxd2+ 21. Kxd2 Nxf1+ 22.
Rhxf1) 20. Be2 Rd4 21. Qxb4 Rxb4 22. Kf2 Nxc4 23. Rhd1) (13. b3 dxe5 (13... Qb6
14. Qd2 dxe5 15. Bg3 Qc7) (13... Qa5+ 14. Qd2 Qxd2+ 15. Kxd2 dxe5 16. c4 (16.
Nf6+ Ke7 (16... Nxf6 17. gxf6) 17. Nxd5+ (17. Ng4 hxg5 18. Bxg5+ f6 19. Nxe5
Ke8 20. Nxc6 Rb6 21. c4)) 16... Bb4+ 17. Kc2 (17. Kc1 Ba3+ 18. Kb1 hxg5 19.
Bxg5 f5 20. cxd5 fxe4 21. dxc6 Rb6) 17... Ne3+ 18. Kb2 (18. Kd3 Nf5 19. Bg3
Nxg3 20. hxg3) 18... hxg5 (18... Nf5 19. Bg3 Nxg3 20. hxg3 Bf8 21. Be2) 19.
Bxg5 Nxf1 20. Nf6+ Kf8 21. Raxf1) 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ (
16... Kc7 17. O-O-O) 17. Kf2 Bb7 18. Rd1+ Kc7 19. Bg3 Bc5+ 20. Kf3 Bd6 21. Be2
(21. Bd3 c5+ 22. Be4 Bxe4+ 23. Kxe4 Rhg8 24. Rhe1 Rg4+ 25. Kf3) 21... Rbg8 (
21... c5+ 22. Ke3 Bxg2 23. Rhg1 Bb7 24. Bh5) (21... Rbd8 22. Rd2 Rhg8 23. Rhd1
Rg5) 22. Ke3 (22. Kf2 c5 (22... Bc5+)) 22... Bc5+ (22... Rg5 23. Bf3 Rd8) 23.
Kd2 (23. Kd3 Bd6 (23... Rg5 24. Bf3)) (23. Ke4 Bd4 24. Kd3 Rd8 25. c3 Bf2+ 26.
Kc4 Bxg3 27. hxg3 Kb6 28. b4 c5) 23... Rg5 24. Bf3 h5 (24... a5 25. Kc1) 25.
Ke2 h4 26. Be1) 13... Rxb2 (13... dxe5 14. Nf6+ (14. O-O-O hxg5 (14... Qb6 15.
b3 hxg5 16. Bg3 Rh4 (16... Qc7 17. Nf6+ Ke7 18. Ng4 (18. Ne4) 18... f6 19. Nxe5
fxe5 (19... Ke8 20. Ng4 e5 21. Nxf6+ Nxf6 22. Bd3 Nd5 23. Bxe5 (23. Bg6+)) 20.
Qxg5+ Kf7 (20... Ke8 21. Qxe5) 21. Be2 Bg7 22. Rhf1+ (22. Bh5+) 22... Kg8 23.
Rd4 (23. Bh5 Rxh5 24. Qxh5 Nf4)) 17. Bf2 Ba3+ 18. Kb1 Qb4 19. Qxb4 Bxb4 20.
Bxh4 gxh4 21. c4 Nb6) 15. Bg3 (15. Bxg5 Qb6 16. b3 (16. c4 Ba3 17. cxd5 exd5
18. Nf6+ Kf8 19. Re1 Qc5+ (19... Qxb2+) 20. Qc2 Bxb2+ 21. Kd1) 16... f5 17.
Nf6+ Nxf6 18. Bxf6 Bh6 19. Bg5 Qd4) 15... Qc7 16. Nf6+ (16. c4 f5 17. cxd5
cxd5+ 18. Qc3 Qxc3+ 19. Nxc3 f4) 16... Ke7 17. Ng4 (17. Ne4 Bh6) 17... f6 18.
h4 (18. Nxe5 fxe5 19. Qxg5+ Ke8 (19... Kf7 20. Be2) 20. Qxe5 (20. Qg6+ Ke7 21.
Be2 Bh6+ 22. Kb1 Qa5) 20... Bh6+ 21. Kb1 Bg7 22. Qxc7 Nxc7 23. Bxc7 Rxb2+ 24.
Kc1 Rxa2 25. Bc4) 18... Bg7 19. h5 Rd8) 14... Nxf6 15. Qxd8+ Kxd8 16. gxf6 h5 (
16... Bb4+ 17. c3 Bd6 18. O-O-O) (16... Bd6 17. O-O-O) (16... Rb4 17. O-O-O+
Kc7 (17... Rd4 18. Be2) 18. Bg3 Bd6 19. c4) 17. O-O-O+ Kc7 18. Be2) 14. Bc4 (
14. a3 Qb6) (14. exd6 Bg7 15. Bc4 hxg5 (15... Qb6)) (14. Nxd6+ Bxd6 15. exd6
hxg5) (14. Bg3 hxg5 (14... dxe5 15. Nf6+ Qxf6 16. gxf6 Bb4)) (14. Bf2 dxe5 15.
Nf6+ Qxf6 16. gxf6 Bb4) 14... dxe5 (14... Qb6 15. Bxd5 (15. Nxd6+ Bxd6 16. exd6
Qe3+ 17. Be2 Qe4) 15... exd5 (15... cxd5 16. Nf6+ Kd8 17. g6 (17. gxh6 Qb4)
17... Qb4 18. Qxb4 Rxb4 19. g4 Kc7 20. c3) 16. Nf6+ Kd8 17. g6 (17. gxh6) 17...
Qb4 18. Qxb4 Rxb4 19. g4 Kc7 20. exd6+ Kxd6 21. c3 Rc4 22. Ne8+ Kd7 23. g7 Bxg7
24. Nxg7 Rxg4 25. Bf6 Rg8 26. Kd2) 15. Nf6+ (15. O-O Be7 (15... Qb6+ 16. Kh1)
16. Rae1 (16. Bg3 Qb6+ 17. Kh1 Qd4 (17... Ne3 18. Bb3 Nxf1 19. Rxf1 Qd4 20. Qe2
) 18. Qxd4 exd4 19. Be5 O-O) (16. g6 Bxh4 (16... f5 17. g7 Rg8 18. Qxh6 Bxh4
19. Qh5+) (16... fxg6 17. Bxe7 Kxe7 18. Rae1 Qb6+ 19. Kh1 a5 20. Qc1 a4 21. Bb3
a3 22. c4) 17. g7 Rg8 18. Qxh6 Be7 (18... Rxc2 19. Qh7 Rxg7 20. Qxg7 f5 21. Bd3
Rb2 22. Rac1) (18... f5 19. Qh5+ Ke7 20. Qxh4+ Kf7 (20... Kd7 21. Qh7) 21. Ng5+
Kg6 22. Rf3 Rxg7) 19. Qh7 Rxg7 20. Qxg7 f5 21. Qxe5 (21. Qh8+ Kd7 22. Qxe5 Rb4
23. Bxd5 cxd5) (21. Bb3 fxe4 22. Qxe5 Bf6 23. Qxe4 Bc3 24. Qg4 Kd7) 21... Rb4
22. Qh8+ Kd7 23. Qxd8+ Kxd8 24. Bxd5 cxd5 25. Nd2) 16... hxg5 (16... Qb6+ 17.
Kh1 Qd4 (17... hxg5 18. Bxg5) 18. Qc1 hxg5 (18... Rb4 19. g6) 19. Bxg5) 17.
Bxg5 Bxg5 (17... f5 18. Bxe7 Kxe7 (18... Qxe7 19. Bxd5 exd5 20. Qc3 dxe4 21.
Qxb2) 19. Qg5+ Kf7 20. Qg3 f4 (20... Qc7 21. Ng5+) (20... Qb6+ 21. Kh1) 21. Bb3
) 18. Nxg5 Qb6+ (18... f6 19. Ne4 f5 20. Bxd5 cxd5 21. Qc3 dxe4 22. Qxb2 Qd4+
23. Qxd4 exd4) 19. Kh1 Qd4 20. Qc1 f5 21. Nf3 (21. Bxd5 cxd5 22. Nf3 Qc3) (21.
Ne4) 21... Qc3 22. Nxe5 Qg3 23. Nf3 Nf4 (23... Rb4) 24. Qd2 c5 25. Qf2 (25. Re5
Rb6) 25... Qxg2+ (25... Qxf2 26. Rxf2 Bb7) 26. Qxg2 Nxg2 27. Kxg2 Rxc2+ 28. Be2
Rxa2) 15... Nxf6 (15... Qxf6 16. gxf6 Bb4 17. Bb3 Rg8 (17... c5 18. Qxb4 (18.
Bg3 Bxd2+ (18... Rg8 19. Qxb4 cxb4 20. Bxd5) 19. Kxd2 Rg8 20. Rhg1) 18... cxb4
19. Bg3 Rxb3 (19... Rg8 20. Bxd5 exd5 21. Kd1 Bf5 22. Re1) (19... Nc3 20. Bxe5)
20. axb3) 18. g3 (18. Qxb4 Nxb4 19. O-O-O Rxa2 20. Bxa2 Nxa2+ 21. Kb2 Nb4)) 16.
Qxd8+ Kxd8 17. O-O-O+ Nd5 18. Kxb2 Be7 (18... hxg5 19. Bxg5+ Ke8 (19... Kc7 20.
h4) 20. Bb3) 19. Bg3 hxg5 20. Bxe5 f6 21. Bg3 Ke8) 13. c3 dxe5 (13... Qxb2 14.
Rb1 Qxa2 (14... Qa3 15. g6 fxg6 16. Bd3 (16. Qg4) (16. Bc4) (16. Qf3)) 15. g6
fxg6 16. Bd3 Nf4 (16... Qxg2 17. Rf1 Qxh2 (17... Rg8 18. c4) (17... Kd7 18. c4
(18. Bg3)) (17... Be7 18. Bxe7 Kxe7 19. exd6+) (17... dxe5 18. Qa4) 18. Qg4 (
18. Nxd6+ Bxd6 19. Bxg6+ Kd7 20. Rf7+ Be7 21. Rxe7+ Kd8 22. Qd4 Qh1+ 23. Kd2
Qg2+ 24. Kd3 Qxg6+ 25. Kc4 Qxb1 26. Rb7+ Ke8 27. Rxb1) 18... Be7 19. Bxe7 (19.
Qxg6+ Kd8 20. Bg3 Bh4 21. exd6 Ra7 22. Bxh4+ Qxh4+ 23. Kd2) 19... Kxe7 20.
exd6+ Kd8 21. Qxg6 Qh3 22. Be2) (16... Ne3 17. Nf6+ Kd8 18. Ng4+ g5 19. Nxe3) (
16... Be7 17. Bxe7 Qxg2 18. Rf1) 17. Nf6+ Kf7 (17... Kd8 18. Nd5+ g5 19. Nxf4)
18. Bxg6+ (18. Be4 dxe5 (18... Qc4 19. Qf3 g5 (19... dxe5 20. Rb6 (20. Ng4 Bg7
21. Rb4 Qc5 22. Bf2 Qd6 23. g3 g5)) 20. Bf2 Be7 21. g3 (21. Rb4 Qa2 22. Bb1 Qa5
23. O-O Bxf6 24. exf6)) 19. Ng4) 18... Kxg6 (18... Nxg6 19. O-O) 19. Qg4+ Kf7
20. O-O Qxg2+ 21. Qxg2 Nxg2 22. Kxg2 dxe5 (22... Kg6 23. Rf3) (22... a5 23.
exd6) (22... d5 23. Kh3 (23. Rf3)) 23. Rf3 (23. Kh3)) (13... Rb8 14. Qf3 (14.
g6 fxg6 (14... Qe3+ 15. Qe2) 15. Nf6+ Kf7 16. Nxd5 exd5 17. Qf3+ Kg8 18. Bd3
dxe5 (18... Rh7 19. Bf2) 19. Bxg6 Rb7 20. Bf2 Qd8 21. O-O e4 22. Qe2 Qd6 23.
Bd4 (23. Qh5 Rg7 24. Bd4 Qxg6 25. Qxg6 Rxg6 26. Bxh8 Bh3 27. Rf2 e3 28. Rf3
Bxg2 29. Rg3 Rxg3 30. hxg3 Bf3) 23... Bg7 24. Bf5 Bxf5 25. Rxf5 Bxd4+ 26. cxd4
Rhh7 27. Raf1 Rhg7 28. a3 Rbf7 29. Rxf7 (29. Qh5 Rxf5 30. Qxf5) 29... Rxf7 30.
Qxa6 Rxf1+ 31. Qxf1 c5 32. Qf2 cxd4 33. Qxd4 Qe6 34. Kf2 Qf5+ 35. Ke1 Qg5 36.
Qc5 Kg7 37. Qc3+ Kh7 38. g3 Qe7 39. Qd4 Qg5 40. Qc5 Qe5 41. a4) (14. b3 dxe5) (
14. g6 fxg6 (14... Qe3+ 15. Qe2 fxg6 16. b3) 15. Nf6+ (15. Rb1 Qe3+ 16. Qe2
Qxe2+ 17. Bxe2 dxe5) (15. b3 Nxc3 (15... dxe5) 16. Nf6+ Kd8 17. Nd5+ g5 18.
Nxb6 Nxd1) (15. Bf2 Qxb2 16. Rc1) (15. Qg4 Qe3+ 16. Be2 Nf4 17. Rf1 Qxe2+ 18.
Qxe2 Nxe2) 15... Kf7 (15... Nxf6 16. Bxf6) 16. Nxd5 exd5 (16... cxd5 17. Qf3+
Kg8 18. Bd3) 17. Qf3+ Kg8 18. Bd3 dxe5 (18... Rh7) 19. Bxg6 Rb7 20. Bf2 (20.
Rf1) 20... Qd8) (14. Qd3 dxe5 (14... Be7 15. exd6 hxg5 16. Bg3 Qxb2 17. Rd1 Bd8
) (14... Qxb2 15. Rd1) 15. g6 fxg6 (15... Be7 16. gxf7+ Kxf7 17. Qf3+ Ke8 18.
Qh5+ Kd7 19. Bxe7) (15... Qxb2 16. gxf7+ Kxf7 17. Rd1 (17. Qf3+)) 16. Bf6 (16.
Rd1) 16... Nxf6 17. Nxf6+ Ke7 18. Ne4 Bg7 19. b3 (19. b4 Rf8) (19. Be2) 19...
c5 (19... Rf8 20. O-O-O Rd8 21. Qg3 Rxd1+ 22. Kxd1 g5 23. h4) 20. O-O-O Rd8 21.
Qxd8+ Qxd8 22. Rxd8 Kxd8 23. Nxc5) (14. Rb1) 14... Be7 (14... Qxb2 15. Rd1 Be7
16. Bc4 dxe5 17. O-O Nf4 18. g6 Bxh4 19. Nd6+ Ke7 20. Nxf7 Bf6 21. Nxh8) (14...
Qe3+ 15. Qxe3 Nxe3 16. Rb1) 15. b4 (15. exd6 Qxb2 16. Rd1 hxg5 17. Bf2 f5) (15.
b3 dxe5 16. Bg3 (16. Bf2 Qa5 17. Bg3 Nf4) (16. Nf6+ Bxf6 17. gxf6 e4 18. Qxe4
Nxc3 19. Qf4 Rb7 20. Bc4 Nd5 21. Bxd5 Qa5+) 16... hxg5 17. Bxe5 f6 18. Nd6+ (
18. Bxb8 Qxb8 19. Bc4 (19. O-O-O f5 20. Ng3 Bf6) 19... Qe5 (19... g4 20. Qg3
Qxg3+ 21. Nxg3) (19... f5 20. Bxd5 cxd5 21. Ng3) 20. O-O-O g4 21. Qd3 Ba3+ 22.
Kd2 Nf4 (22... Qf4+ 23. Kc2 Ne3+ 24. Kb1 Nxd1 25. Rxd1 Be7) 23. Qd4 Qxd4+ 24.
cxd4 f5 25. Nc5 Bb4+ 26. Kc1 Nxg2) (18. Nxf6+ Nxf6 19. O-O-O (19. Bd3 O-O 20.
O-O-O) 19... O-O (19... Rb7 20. Bd3 O-O (20... Rh6)) 20. Bd3 Rb7 (20... Qa5 21.
Bxb8 Qxa2 22. b4) 21. Kb1) (18. Bg3 Rb7 19. O-O-O) 18... Bxd6 19. Bxd6 Rb7 20.
O-O-O Kf7 (20... g4) 21. Kb2 a5 (21... Qe3 22. Bxa6) 22. Be2 (22. c4 Ne3 23.
Bd3 Nxd1+ (23... Qd4+ 24. Kb1 Kg7 25. Be4) 24. Rxd1 a4) 22... a4 23. Rhf1 f5
24. b4 (24. Be5 axb3 25. a4) 24... Rh4 (24... Ne3 25. Be5 Rh7 (25... Rh6 26.
Qg3) 26. Qg3 Qc5 (26... a3+ 27. Kb3)) 25. Ka3 (25. a3 Ne3) 25... Qe3) 15...
dxe5 (15... Nxb4 16. exd6 Nc2+ 17. Kd2 Nxa1 18. Nf6+ Kf8 19. dxe7+ Kxe7 20. g6
Qb2+ 21. Kd3) (15... hxg5 16. Bf2 (16. Bg3 dxe5 (16... Nxb4 17. cxb4 d5 18. Nd2
Qd4 (18... Bxb4)) (16... g4) 17. Bxe5 f6 18. Nd6+ (18. Bxb8 Qxb8 19. Bc4 f5)
18... Kf8 (18... Bxd6 19. Bxd6 Ra8 20. Bd3 Kf7 21. g3 g4 22. Qe4 f5 23. Qe5)
19. Nc4 (19. Bd4 Qc7 20. Nxc8 Rxc8 21. Bxa6 e5) (19. Bg3) 19... Qa7 20. Bd3 (
20. h4) (20. Be2)) 16... Qc7 17. exd6 Bxd6 18. Nxd6+ Qxd6 19. Rd1 Qe5+ (19...
f5 20. Be2 a5 (20... e5 21. Bc5 (21. Ba7 Rb7 22. Bc5 Qf6 23. c4 g4 24. Qa3 Nf4
25. Rd6 Qg5 (25... Qg7 26. Bf1 O-O (26... Rd7 27. b5) 27. Qc3) 26. Bf1 Rh6)
21... Qf6 22. c4 g4 (22... e4 23. Qf2) 23. Qd3) (20... Qc7 21. c4) (20... g4
21. Qd3) 21. Bc5) (19... a5 20. Be2 f5 21. Bc5) 20. Kd2 Qg7 21. Kc2 (21. Bc4 e5
22. Kc2 Be6 23. Bb3 (23. Rhe1 f6)) 21... g4 (21... a5 22. bxa5 Ra8) 22. Qg3 e5
23. Ba7) 16. Bf2 (16. Bg3 hxg5 (16... Nf4 17. Bxf4 exf4 18. g6 fxg6 19. Qxf4 g5
20. Qg3 (20. Qf3 Rf8 21. Qh5+ Kd8 22. O-O-O+ Kc7) 20... O-O (20... c5 21. Be2
cxb4 (21... O-O 22. h4 g4 23. Qxg4+ Kh7 24. bxc5) 22. Rf1 Rf8 23. Qe5) 21. h4
Rf4 22. Bd3 Qc7) (16... Nxb4 17. Rc1) 17. Bxe5 f6 18. Nd6+ (18. Bxb8 Qxb8 19.
Bc4 f5) 18... Kf8 (18... Bxd6 19. Bxd6 Ra8 20. c4 (20. Be2)) 19. Bd4 (19. Nc4
Qa7 20. Bd3 (20. Be2 Kg7) (20. Bxb8 Qxb8)) 19... Qc7 20. Nxc8 Qxc8 21. Bc4 e5
22. Bc5 (22. Ba7 Ra8 23. Bc5 Qe6 24. O-O Bxc5+)) 16... Qc7 17. g6 fxg6 (17...
O-O 18. Qh5 Kg7 19. gxf7 Rxf7 20. Rd1 (20. Bc4) (20. Qg4+ Kh8 21. Qg6 Bf8 22.
g3 a5 23. a3 (23. Bc5 axb4 24. Bxf8 Rxf8 25. Qxh6+ Kg8 26. c4 Qg7 27. Qxg7+
Kxg7 28. cxd5 exd5 29. Nc5 Rf3) (23. Bd3 axb4 24. c4 Rf5 (24... Ba6 25. Bc5)
25. cxd5 cxd5 26. O-O dxe4 27. Bxe4 Rg5 28. Qf6+ Bg7 29. Rac1) 23... Ra8 24.
Rd1 axb4 25. axb4 Ra2) 20... Rf5 21. Qg4+ Kh7 22. Bd3) 18. Bc4 a5 (18... Rf8
19. Qg3) 19. a3 (19. Qg4 axb4 (19... Kf7 20. O-O Kg7 21. Qg3) 20. Qxg6+ Kd8 21.
O-O bxc3 22. Rac1 Rb4 23. Bd3) 19... Rf8 20. Qg3 (20. Qg4 Kf7) 20... g5 (20...
Nf4 21. O-O Rf5 (21... Kf7 22. Bd4 g5 23. Be3) 22. Bc5 Bxc5+ 23. Nxc5 Kf8 (
23... Rg5 24. Qh4)) (20... Kf7 21. O-O Nf4) 21. O-O (21. Qg4 c5 22. Bxc5 (22.
O-O cxb4 23. cxb4 Nf4) (22. Qh5+ Rf7) 22... Bxc5 23. Nxc5 Ke7 24. Rf1) (21. Bd3
Rf4 (21... Nf4) 22. O-O) 21... Rf4 22. Qd3 (22. Bd3 Kf7) (22. Rae1 Kf7) 22...
Kf8 23. Bb3 (23. Ng3 Nf6) (23. g3) (23. Qc2) 23... Rf5 24. Nc5 (24. Rad1) 24...
Kg8 25. Bc2 Ra8) (13... Qe3+ 14. Qe2 Qxe2+ 15. Bxe2 dxe5 16. g6 (16. Nf6+ Nxf6
17. gxf6 Bb7) 16... fxg6 17. Nf6+ (17. O-O-O Be7 18. Bxe7 Kxe7 19. Bf3) 17...
Kf7 18. O-O Nf4 19. Ng4 g5 (19... Bc5+ 20. Kh1) 20. Nxe5+ Kg7 (20... Kf6 21.
Nxc6 e5 (21... Bc5+) 22. Rxf4+ exf4 23. Bf2)) 14. g6 fxg6 (14... Qe3+ 15. Qe2
Qxe2+ (15... fxg6 16. Qxe3 (16. Nf6+ Kf7 17. Ng4 Qxe2+ 18. Bxe2 Bg7 19. O-O+
Kg8 (19... Nf4 20. g3 g5 21. gxf4 exf4 (21... gxh4 22. Nxe5+ Bxe5 23. fxe5+)
22. Bf2 e5) 20. Bf6 e4 (20... Bxf6 21. Nxf6+ Kg7 22. Ng4 e4 23. c4 Nb4 24. Ne5)
21. Bxg7 Kxg7) 16... Nxe3 17. Bf6 Rh7 18. Kd2 Nxf1+ 19. Rhxf1 Rf7 20. Rad1 (20.
c4)) 16. Bxe2 fxg6 17. O-O-O (17. Bf3) (17. Nf6+ Kf7 18. Ng4 (18. O-O) 18...
Bg7 19. O-O+ Kg8 20. Bf6) 17... Be7 18. Bxe7 (18. Bg3) 18... Kxe7 19. Bf3 a5 (
19... Rf8) 20. Nf2) 15. Bf2 (15. Qe2) (15. Qg4) (15. Qc2) (15. Qd2) 15... Qxb2
(15... c5 16. Qg4 (16. Qc2 Qc7 (16... Bb7 17. b4 (17. Bc4 O-O-O 18. O-O-O) (17.
O-O-O Be7 18. Bc4 Qc7) 17... Kf7 (17... O-O-O 18. O-O-O Nf4 19. Re1) 18. Bd3 (
18. Bc4 Kg7 19. O-O Nf4 20. Rae1) (18. O-O-O)) 17. Nd2) 16... Nf4 17. O-O-O (
17. Be3 Qb7 (17... Qxb2 18. Rd1 Qc2 19. Qf3) 18. Qf3 Qxb2 19. Rd1 Be7 20. Bc1 (
20. Bxf4 exf4 21. Qxf4) 20... Qb6 21. g3 Nd5) 17... Be7 (17... Bb7 18. Nf6+ Kf7
19. Nd7 Qc7 20. Bc4 (20. Nxe5+ Qxe5 21. Rd7+ Kg8 (21... Be7 22. Rxb7 Rab8 23.
Rxb8 Rxb8 24. Qf3 Qf5 (24... Kg7 25. Bg3) 25. h4 Kg7) 22. Rxb7 Rh7) (20. g3)
20... Bc6 (20... Bd6 21. Rhf1 (21. Bxc5 Bxc5 22. Rhe1 Bd6 23. Rxd6 Qxd6 24.
Nxe5+ Kg7 25. Qxf4 Rhf8 26. Qg4 (26. Qg3 g5 27. Bd3 Rac8 (27... Rad8 28. Qe3))
26... Rf6 27. Bd3 Rd8 28. Kb1 h5 (28... Qc5 29. Bxg6 Qf2 30. Bd3+ Kh8 31. Rf1
Qxf1+ 32. Bxf1 Rxf1+ 33. Kc2 Rf2+ 34. Kb3 Rdd2 (34... Rxg2 35. Qh4 Rdd2 36.
Qxh6+ Kg8 37. Qxe6+ Kg7 38. Qf7+ Kh6 39. Qf6+ Kh7 40. Qf5+) 35. Qg6 Rxb2+ 36.
Kc4 Bd5+ 37. Kc5 Rb7 (37... Rb5+ 38. Kd4) 38. c4) 29. Qg5 Qd5 (29... Bc6) 30.
g3 (30. g4 Qg2 31. a3 (31. Kc1 Rd5) (31. c4 Rd4) 31... Rxd3 (31... Rd5 32. c4)
32. Nxd3) 30... Bc6 31. g4 (31. h4 Be8 32. g4 Rb8 (32... Qg2 33. gxh5 Qxg5 34.
hxg5 Rf2 35. h6+)) (31. h3 Be8 32. g4 Qg2) 31... hxg4 32. Qxg4 Qg2 33. Qb4) (
21. g3 h5 22. Qg5 Qxd7 23. gxf4 Qe7) 21... Bd5 (21... h5 22. Bxe6+ Kg7 (22...
Ke8 23. Qh4 g5 24. Nf6+) 23. Qh4 (23. Qg5 Raf8 24. Nxf8 Rxf8 25. Be3 (25. Bc4))
23... Raf8 (23... Rhf8 24. Bg3 Ne2+ (24... Bxg2 25. Rf2 Bc6 (25... Kh6 26.
Bxf4+) 26. Bxf4 exf4 27. Nxf8 Rxf8 28. Rfd2) 25. Kb1 Nf4) 24. Bg3 Bc6 (24...
Bxg2 25. Rf2)) 22. Bg3 (22. Bxc5 Bxc5 23. Bxd5 exd5 24. Rxd5 Be3+ 25. Kb1 Kg7)
(22. Bxd5 exd5 23. Bh4 (23. Bxc5 Bxc5 24. Rxd5 Be3+ 25. Kb1 Kg7) (23. g3 h5 24.
Nxe5+ (24. Qg5 Qxd7 25. gxf4 Qg4) 24... Bxe5 25. Qf3 Kg7 26. gxf4 Bxf4+ 27. Kb1
) 23... h5 24. Qg5 Qxd7 25. Rxf4+ exf4 26. Qf6+ Kg8 27. Qxg6+ Qg7 28. Qxd6)
22... Rad8 (22... Rhd8 23. Nxe5+ Bxe5 24. Bxf4 Bxf4+ 25. Rxf4+ Kg7 26. Bd3 g5)
23. Nxe5+ Bxe5 24. Bxf4 Bxf4+ 25. Rxf4+ Kg7 26. Bd3 g5) (20... Bd5 21. Bxd5
exd5 22. Rhe1 Bg7 (22... Bd6 23. Bxc5) 23. Nxc5 (23. g3 h5 24. Qf3 Qxd7 25.
gxf4 e4 26. Rxe4) 23... h5 24. Qf3 Kg8) (20... Be7 21. Be3 (21. Rhe1)) 21.
Nxe5+ (21. Nxc5 Bxc5 22. Bxc5) (21. g3 h5 22. Qg5 Nd3+ 23. Kb1 Be7 24. Qe3 Rhd8
) 21... Qxe5 22. Bg3 Qf5 23. Qxf4 Qxf4+ 24. Bxf4 Bxg2 25. Rd7+ Be7 26. Re1 Bh3)
(17... Rb8 18. Rd2 (18. b4 Qc6 19. Nxc5 Be7) (18. b3 Be7 (18... Qc6 19. Qf3 Bb7
20. Nf6+ Kf7 21. Qxc6 Bxc6 22. Nd7 Bxd7 23. Rxd7+) 19. g3 h5 20. Qf3 Nd5 21.
Bc4) 18... Qc6 (18... Be7 19. Be3) 19. Bd3 Be7 (19... c4 20. Bb1) 20. Nxc5 g5
21. Be4 Qb5 22. Nd3 h5 (22... Ba3 23. Ba7)) 18. Be3 (18. g3 h5 19. Qf3 Nd5 20.
Bc4) (18. Bc4) 18... Qc6 (18... Rb8 19. Rd2 (19. b3) 19... h5 (19... Qc6 20.
Qf3) 20. Qg3 Qc6 21. Bxf4 Qxe4 22. Bxe5 Bh4 23. Qf4 Qxf4 24. Bxf4 Rb6) (18...
g5 19. h4) 19. Bd3 (19. Nxc5 h5 (19... g5) 20. Qg3 h4 21. Qg4 g5 22. Bd3 (22.
Nd3) 22... Qxg2 23. Qxg2 Nxg2 24. Rhf1 Rh6) 19... h5 20. Qf3 Bb7 21. Bxf4 exf4
22. Qxf4 (22. Nxc5 Qxf3 23. Bxg6+ Kf8 24. Nxe6+ Kg8 25. gxf3 Bxf3) 22... O-O-O
23. Bc2) (15... Qc7 16. Nc5 (16. Bd3 Be7 17. Qg4 Nf4 18. O-O) (16. Qg4 Qg7) (
16. Qc2) (16. Bc4 Be7 17. Qg4 (17. Qf3 Rf8 (17... Rb8 18. O-O-O Rf8 19. Qg3 Kf7
20. Rhf1 Nf4 21. Bc5 Bxc5 22. Nxc5) 18. Qg3 Nf4 19. O-O) 17... Kf7 18. O-O (18.
h4 Kg7 19. O-O-O) 18... Kg7 19. Qg3 h5 (19... c5 20. b4 Nf4) 20. h4 c5 21. b4
Nf4 22. Nxc5) 16... Bd6 (16... Bg7 17. Bd3 O-O (17... Nf4 18. Be4 O-O 19. O-O
Rb8) 18. O-O Nf4 (18... g5)) 17. Qc2 (17. Qg4 Qg7) 17... Qg7 (17... Qf7) 18. c4
(18. Bd3 O-O 19. O-O) (18. O-O-O Rb8 19. Kb1) 18... O-O 19. cxd5 (19. O-O-O)
19... cxd5 (19... exd5) 20. Rc1 e4 21. Be2) (15... Qb7 16. Bd3 Qxb2 17. Rb1)
16. Rb1 Qxa2 (16... Qa3 17. Qg4 Rg8 (17... Nf4 18. g3) (17... Rh7 18. Bc4 Rf7
19. O-O g5 (19... Nf4 20. Be3 g5 (20... h5 21. Qg3 Qa5 22. Bxf4) 21. g3) 20. g3
Rf5 21. Bd3 (21. Qh5+)) (17... Qe7 18. Bd3 (18. Bc4 Qg7 19. O-O Be7) (18. c4)
18... Qg7 19. O-O h5 20. Qd1 Be7 21. Qa4 Bd7 22. Rb7) 18. Bc4 (18. Bd3 Be7 19.
O-O Nf4) 18... Be7 (18... h5 19. Qg3 (19. Qg5 Qe7 20. Qxe5 Qg7 21. Qg3 (21.
Bxd5 Qxe5 22. Bxc6+ Bd7 23. Bxa8) 21... Be7 22. O-O (22. Bd4 e5) 22... h4 23.
Qg4 (23. Qd3)) 19... Nf4 20. Qf3 (20. Nf6+) (20. Be3) 20... Be7 21. O-O Bd7 22.
Rb7) (18... a5 19. O-O (19. Qg3) 19... Be7 20. Rbe1) 19. O-O h5 (19... Nf4 20.
Be3) (19... Bd7 20. Rb7 (20. Rb3 Qa5) (20. Qg3) 20... Qa5 (20... h5 21. Qf3 (
21. Qg3)) 21. Qf3 (21. Rfb1)) (19... a5 20. Rbe1) (19... Rg7) 20. Qg3 Qa5 (
20... Qa4 21. Qxe5 (21. Bd3) 21... Qxc4 22. Nd6+ Bxd6 23. Qxd6) (20... Nf4 21.
Qf3 (21. Bd4) 21... Rf8 (21... Nd5 22. Rb3) (21... Bd7 22. Rb7 (22. Bd4)) 22.
Nf6+ Kf7 23. Nxh5 gxh5 24. Qxc6) 21. Kh1 (21. Qxe5 Qc7 22. Qd4) (21. Be3 h4 (
21... Qa4 22. Bd3) 22. Qxe5 Qc7) (21. Rbd1 Qc7 22. Kh1) 21... Qc7 (21... Bd7
22. Rb7) 22. Be3 (22. Rbd1) 22... h4 23. Qf3) 17. Bd3 Be7 (17... Rh7 18. O-O
Rf7 19. g3 (19. Ra1 Qb2 20. Qa4 Bd7 21. Rfb1 Rxf2 22. Rxb2 (22. Nxf2 Qxc3)
22... Rxb2 23. Rf1 Rab8 24. Qa5 Nf4 25. Qxe5) (19. Nd6+)) (17... Qa5 18. O-O
Be7) (17... Rg8 18. O-O) (17... Bg7 18. Nd6+ Kd7 19. Nc4) (17... h5 18. O-O Be7
19. c4) (17... Nf4 18. g3) 18. O-O Qa5 (18... h5 19. c4) (18... O-O 19. Ra1 Qb2
20. Qg4 g5 21. Rfb1 (21. Qh5 Kg7 22. Rfb1 Nf4 (22... Rxf2 23. Rxb2 Rxb2 24. Rf1
) 23. Qf3 Nxd3 24. Qxd3 Rd8 25. Qg3) 21... Rxf2 22. Rxb2 Rxb2 23. Qh5) (18...
Nf4 19. g3 Nh3+ (19... Nxd3 20. Qxd3 Rf8 21. c4 Qa3 22. Rb3 Qa5 23. Bb6) 20.
Kg2 Nxf2 21. Rxf2 Qd5 22. Qg4 (22. c4)) (18... Rg8 19. g3 (19. Ra1 Qb2)) 19.
Qg4 (19. c4 O-O 20. cxd5 exd5 21. Bb6 (21. Qc1 dxe4 22. Bxe4 Bf5) (21. Ng3)
21... Qa3 (21... Rxf1+ 22. Qxf1 Qa3 23. Nf6+ Kh8 24. Bc7) 22. Rxf8+ (22. Qc2
dxe4 23. Qxc6 exd3 24. Qxg6+ Kh8 25. Qxh6+ Kg8 26. Qg6+ Kh8) 22... Bxf8 (22...
Kxf8 23. Rb3 (23. Qf1+) 23... Qa4 24. Nf2 Bf5 (24... Bg5 25. Bxg6) (24... g5
25. Qc2) 25. Bxf5 gxf5 26. Nd3) 23. Nf6+ Kh8 24. Rc1 (24. Qc2 Rb8 25. Kh1 Be6
26. Bxg6 Qe7) (24. Bxg6 Rb8 25. Bf2 Rxb1) 24... Qd6 (24... Qe7 25. Qf1 (25.
Rxc6 Bb7 26. Nxd5 (26. Ng8 Kxg8 27. Rxg6+ Bg7 28. Be3 Rc8 29. Bxh6 Qc5+ 30. Kh1
Rc7 31. Bf5 Kf8 32. Rf6+ Rf7 33. Rxf7+ Kxf7 34. Qh5+ Kf8 35. Bxg7+ Kxg7) 26...
Qd7 27. Ne7 Bxe7 28. Rxg6 Bg5 29. Rxg5 hxg5 30. Qh5+ Kg8 31. Bc4+ (31. Qxg5+
Qg7 32. Bc4+ Kh7) 31... Bd5 32. Qxg5+ Kf7 33. Qh5+ (33. Qd2 Rd8 34. Bxd8 Qa7+
35. Qf2+ (35. Kh1 Bxc4) 35... Qxf2+ 36. Kxf2 Bxc4)) 25... Bg7 26. Rxc6 Qf7 27.
Bc5 e4 28. Be2 Be6 29. Qf4 (29. Bg4 Bxg4 30. Nxg4 Qxf1+ 31. Kxf1 a5 32. Rxg6 a4
33. Ba3 d4 34. Re6 e3 35. Nxh6 d3 36. Rxe3 d2 37. Nf7+ Kg8 38. Rd3 Kxf7 39.
Rxd2) 29... Bxf6 30. Rc7 Bd7 31. Bg4 Rb8 32. Qf1 Rd8 33. Rxd7 Rxd7 34. Bxd7)
25. Ne8) (19. Qf3 Qc7 (19... Rf8 20. Qg3 g5 (20... Nf4 21. Bb6 Qd5 22. Rxf4
exf4 23. Qxg6+ Rf7 24. Qg8+ Bf8 25. Rd1) (20... Rg8 21. c4 Nf4 22. Bb6) (20...
Rf7 21. Qxe5) 21. Qxe5 (21. Qh3) 21... Qc7 (21... Qd8 22. Bc5) (21... Rf5 22.
Nd6+ (22. Qh8+) 22... Bxd6 23. Qxd6) 22. Qg7 Rb8 (22... Nf4 23. Nxg5 (23. g3))
(22... a5 23. Bd4 Nf4 24. g3) (22... c5 23. Bg3 Nf4 24. Bxf4 gxf4 25. Be2) (
22... Rf5 23. Bd4) 23. Rbd1 Kd8 24. Qxh6 (24. Bd4)) (19... h5 20. Nd2) (19...
Nf4 20. g3 O-O 21. gxf4) 20. g3 Rf8 (20... Rb8 21. Rxb8 Qxb8 22. c4) 21. Qg4
Rg8 22. Nc5) 19... Nf4 (19... Rg8 20. Rb7 (20. Ra1 Qc7 21. Nc5 Nf4 22. Be4 Bd6)
20... Bd7 (20... Kd8 21. Rxe7 Nxe7 22. Qh4 Re8 (22... Rb8 23. Bc5) 23. Bc5) 21.
Bh4 g5 22. Qh5+ Kd8 23. Bf2) 20. g3 h5 21. Qf3 Nh3+ (21... Nd5 22. c4 (22. Ra1
Qc7 23. Nc5) (22. Nd2 Qxc3 23. Nc4 Rf8 24. Bxg6+ Kd8 25. Bb6+ Kd7 26. Qe4 Rxf1+
27. Rxf1) (22. Ra1 Qc7) 22... Rf8 23. Qd1 Nb4 (23... Qc7 24. cxd5 (24. Qc1)
24... exd5 (24... cxd5) 25. Bb6 Qd7 (25... Qb8 26. Nf6+) 26. Nf6+ (26. Qc2)
26... Rxf6 27. Rxf6 Bxf6 28. Bxg6+ Ke7 29. Qc2 Qe6 30. Rf1 Bd7 31. Bc7) (23...
Bd7 24. cxd5 cxd5 (24... exd5 25. Bb6 (25. Nd6+ Bxd6 26. Bxg6+ Ke7 27. Qxh5 Bc5
(27... Bc7 28. Qg5+) 28. Qxe5+) 25... Qa3 26. Qc2 Rf5 (26... dxe4 27. Bxe4 Rf5
28. Qc4) 27. Nc5) 25. Qc1 (25. Ng5 e4 (25... Bxg5 26. Bxg6+ Ke7 27. Qxh5 Be3 (
27... Bd2 28. Rb6 Kd8 29. Rfb1)) 26. Nxe4) 25... dxe4 26. Bxe4 Rc8 27. Qh6 Bc5
28. Qxg6+ Kd8 29. Qg5+ Be7 30. Qxh5) 24. Be2 (24. Nf6+ Rxf6 25. Bxg6+ Rxg6 26.
Qxh5 Kd8 27. Qxg6 c5 28. Rfd1+ Kc7 29. Rxb4 Qxb4 30. Qf7) 24... Nd5 (24... Qd8
25. Qc1 Rxf2 (25... Nd3 26. Qh6 Nxf2 27. Rxf2 Rxf2 28. Kxf2 Qd4+ 29. Kf3) 26.
Nxf2) 25. Qc1) (21... O-O 22. gxf4 Rxf4 (22... exf4 23. Kh1 (23. Rb6)) 23. Qg2
(23. Qe2)) 22. Kg2 Nxf2 23. Nxf2 *
EDIT: Added a bit more analysis after 13... Rb8, including Weirwindle's idea of 14. Qd3.
EDIT: Added analysis of Weirwindle's suggestion of 12... Rb8.
EDIT: Added a lot of analysis after Weirwindle's suggestions and own investigations.
EDIT: Added some more analysis, last update for today.
interesting!
what did you conclude finally?
If you concluded that 15. Bf2 move looks very strong, as under:
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2
instead of...
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Qe2
How would you justify it in simple words that I can not figure-out from complex PGN posted?
I am not fond of playing "The Sicilian Defence" quite often as a black. It is my personal observation that the word "Defence" should be dropped from "The Sicilian Defence" coz it really does not provide any strong defence to the black neither higher the chances for black to win. Further more some moves requires acute calculation otherwise black is always ends-up in troublesome situation than white.
I do apologize for my limited knowledge with computer chess.
what did you conclude finally?
If you concluded that 15. Bf2 move looks very strong, as under:
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2
instead of...
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Qb6 13. c3 dxe5 14. g6 fxg6 15. Qe2
How would you justify it in simple words that I can not figure-out from complex PGN posted?
I am not fond of playing "The Sicilian Defence" quite often as a black. It is my personal observation that the word "Defence" should be dropped from "The Sicilian Defence" coz it really does not provide any strong defence to the black neither higher the chances for black to win. Further more some moves requires acute calculation otherwise black is always ends-up in troublesome situation than white.
I do apologize for my limited knowledge with computer chess.
![[us]](/mwf/v12/flags/us.png "United States")
>I am not fond of playing "The Sicilian Defence" quite often as a black. It is my personal observation that the word "Defence" should be dropped from "The Sicilian Defence"
I think the "tradition" is to call openings for black 'defenses' and openings for white 'attacks'. For example the King's Indian Defense vs. the King's Indian Attack. They may not have these qualities at all.
Labyrinth,
i agree with you
[quote]
I think the "tradition" is to call openings for black 'defenses' and openings for white 'attacks'. For example the King's Indian Defense vs. the King's Indian Attack. They may not have these qualities at all.
[/quote]
What is the point in using word "Defence" which can not defend or win at all? ....if it is "Defence", one must not loose at least.
When ever I play The Sicilian Defence and loose, my buddy always tont me what kind of defence really it is? coz the name sounds so big.
What is the point in using word "Attack" that can not be turned into a WIN? ...still "Attack" is OK coz attack may leads either into win or loose.
just being little funny!
i agree with you
[quote]
I think the "tradition" is to call openings for black 'defenses' and openings for white 'attacks'. For example the King's Indian Defense vs. the King's Indian Attack. They may not have these qualities at all.
[/quote]
What is the point in using word "Defence" which can not defend or win at all? ....if it is "Defence", one must not loose at least.
When ever I play The Sicilian Defence and loose, my buddy always tont me what kind of defence really it is? coz the name sounds so big.
What is the point in using word "Attack" that can not be turned into a WIN? ...still "Attack" is OK coz attack may leads either into win or loose.
just being little funny!
Well, I would just say "Sicilian" then :-)
I'll just stay away from 14... fxg6, as the white win is almost inevitable while most material is staying on the board.
14... Qe3+ 15. Qe2 Qxe2+ 16. Bxe2 fxg6 17. Nf6+ Kf7 18. O-O takes away queen and g-pawn problem yet white's knight begins slaughtering pawns.
13... Rb8 14. Qd3 dxe5 15. g6 fxg6 16. Bf6 gives white the game
I have nothing for 10... dxe5 or 12... dxe5
One line that you are missing is, and that black could very likely hold is 13... Qxb2 14. Rb1 (14. g6 fxg6 15. Rb1 Qxa2 16. Bf2 dxe5 17. Bd3 Be7) 14... Qxa2
15. Rc1 (15. g6 fxg6 16. Bf2 dxe5 17. Bd3 Be7) 15... dxe5 16. g6 fxg6 17. Be2
Be7 18. Bxe7 Kxe7 19. O-O Rb8
14... Qe3+ 15. Qe2 Qxe2+ 16. Bxe2 fxg6 17. Nf6+ Kf7 18. O-O takes away queen and g-pawn problem yet white's knight begins slaughtering pawns.
13... Rb8 14. Qd3 dxe5 15. g6 fxg6 16. Bf6 gives white the game
I have nothing for 10... dxe5 or 12... dxe5
One line that you are missing is, and that black could very likely hold is 13... Qxb2 14. Rb1 (14. g6 fxg6 15. Rb1 Qxa2 16. Bf2 dxe5 17. Bd3 Be7) 14... Qxa2
15. Rc1 (15. g6 fxg6 16. Bf2 dxe5 17. Bd3 Be7) 15... dxe5 16. g6 fxg6 17. Be2
Be7 18. Bxe7 Kxe7 19. O-O Rb8
> One line that you are missing is, and that black could very likely hold is 13... Qxb2 14. Rb1 (14. g6 fxg6 15. Rb1 Qxa2 16. Bf2 dxe5 17. Bd3 Be7) 14... Qxa2 15. Rc1 (15. g6 fxg6 16. Bf2 dxe5 17. Bd3 Be7) 15... dxe5 16. g6 fxg6 17. Be2 Be7 18. Bxe7 Kxe7 19. O-O Rb8
Please take another look at my analysis. I give 13... Qxb2 14. Rb1 Qxa2 15. g6 fxg6 16. Bd3! and I think this is close to lost for Black, the analysis is all there.
I am looking more into the 13... Rb8 lines after your suggestion of 14. Qd3. I can't see that 14. Qd3 wins straight away, but it's interesting.
Yes, I have that now.
13... Qxb2 14. Rb1 Qxa2 15. g6 fxg6 16. Bd3 Nf4 17. Nf6+ Kf7 18. Bxg6+ Kxg6 19. Qg4+ Kf7 20. O-O
Qxg2+ 21. Qxg2 Nxg2 22. Kxg2 Bg7 23. Nh5+ Kg6 24. Nxg7 Rg8 25. Bf6 dxe5 26. Rb4
13... Qxb2 14. Rb1 Qxa2 15. g6 fxg6 16. Bd3 Nf4 17. Nf6+ Kf7 18. Bxg6+ Kxg6 19. Qg4+ Kf7 20. O-O
Qxg2+ 21. Qxg2 Nxg2 22. Kxg2 Bg7 23. Nh5+ Kg6 24. Nxg7 Rg8 25. Bf6 dxe5 26. Rb4
After 2 days of searching 7... Nc6 is great for black after
8. Nxc6 bxc6 9. e5 h6 (9... dxe5 is lost for black) 10. Bh4 (10. Bxf6 is drawn) g5 (10... dxe5 is lost for black) 11. fxg5 Nd5 (11... Nd7 is lost for black) 12. Ne4 (12. Nxd5 is drawn, 12. Bg3 is drawn)
12... Rb8 13. c4 (all other moves are drawn) Ne3 13. Qd2 d5 14. Nf6 Qxf6 16. gxf6 (16. is drawn) Bb4 17. cxd5 (Rb1 is drawn) cxd5
12... Rb8 Refutes the entire Qb6 mess
12... Qb6 13. c3 dxe5 (13... Qxb2 is very lost for black after 14. g6 fxg6 15. Rb1 Qxa2 16. Bd3 Nf4 17. Nf6 Qf7 18. Bxg6 Kxg6 19. Qg4 Kf7 20. O-O Qxg2 21. Qxg2 Nxg2 22. Kxg2) (13... Qe3 is lost for black) (13... Rb8 doesn't look good so far)
14. g6 (else the game is drawn) fxg6 (else the game is lost for black)
Move 15 holds many lines for white. The only ones that does not begin to become drawish are Bf2, and Qc2. I think black could pull through but I wouldn't what to be against white in it.
15. Qc2 Rb8 16. b3 Be7 17. Bf2 Qc7 18. Nc5 Qa5 19. Na4
15. Qe2 Rb8 16. Bf6 Nxf6 17. Nxf6 Kf7 18. Ng4 Qxb2
15. Bf2 c5 16. Qc2 Bb7 17. b4 O-O-O 18. O-O-O Qc7 19. Nxc5 Bxc5 20. Bxc5 Nf4
By drawn I mean <= 0.10 after 10 moves. By won I mean >= 1.50 no matter blacks alternatives along the line.
8. Nxc6 bxc6 9. e5 h6 (9... dxe5 is lost for black) 10. Bh4 (10. Bxf6 is drawn) g5 (10... dxe5 is lost for black) 11. fxg5 Nd5 (11... Nd7 is lost for black) 12. Ne4 (12. Nxd5 is drawn, 12. Bg3 is drawn)
12... Rb8 13. c4 (all other moves are drawn) Ne3 13. Qd2 d5 14. Nf6 Qxf6 16. gxf6 (16. is drawn) Bb4 17. cxd5 (Rb1 is drawn) cxd5
12... Rb8 Refutes the entire Qb6 mess
12... Qb6 13. c3 dxe5 (13... Qxb2 is very lost for black after 14. g6 fxg6 15. Rb1 Qxa2 16. Bd3 Nf4 17. Nf6 Qf7 18. Bxg6 Kxg6 19. Qg4 Kf7 20. O-O Qxg2 21. Qxg2 Nxg2 22. Kxg2) (13... Qe3 is lost for black) (13... Rb8 doesn't look good so far)
14. g6 (else the game is drawn) fxg6 (else the game is lost for black)
Move 15 holds many lines for white. The only ones that does not begin to become drawish are Bf2, and Qc2. I think black could pull through but I wouldn't what to be against white in it.
15. Qc2 Rb8 16. b3 Be7 17. Bf2 Qc7 18. Nc5 Qa5 19. Na4
15. Qe2 Rb8 16. Bf6 Nxf6 17. Nxf6 Kf7 18. Ng4 Qxb2
15. Bf2 c5 16. Qc2 Bb7 17. b4 O-O-O 18. O-O-O Qc7 19. Nxc5 Bxc5 20. Bxc5 Nf4
By drawn I mean <= 0.10 after 10 moves. By won I mean >= 1.50 no matter blacks alternatives along the line.
Hi,
I looked into 12... Rb8, interesting idea. I have added analysis of this move to the original post.
Apart from 13. c4, white can also try 13. Qd2 (or similarly, 13. b3), when it seems black has nothing better than to enter the endgames arising after 13... dxe5. These endgames are essentially the same as the endgame after 12... dxe5.
I looked into 12... Rb8, interesting idea. I have added analysis of this move to the original post.
Apart from 13. c4, white can also try 13. Qd2 (or similarly, 13. b3), when it seems black has nothing better than to enter the endgames arising after 13... dxe5. These endgames are essentially the same as the endgame after 12... dxe5.
Black has 13. b3 Qa5 Qd2 14. Qd2 Qxd2 15. Kxd2 dxe5 16. c4 Bb4 17. Kc2 Ne3 to draw.
Also 13. Qd2 Rxb2 14. Bc4 dxe5 15. Nf6 Nxf6 16. Qxd8 Kxd8 17. O-O-O Ke8 18. Kxb2 hxg5 19. Bxg5 Nd5 goes out to a draw, unless I missed something?
How do you post your entire tree as you did before?
Also 13. Qd2 Rxb2 14. Bc4 dxe5 15. Nf6 Nxf6 16. Qxd8 Kxd8 17. O-O-O Ke8 18. Kxb2 hxg5 19. Bxg5 Nd5 goes out to a draw, unless I missed something?
How do you post your entire tree as you did before?
I don't know about your line after 13. b3, it seems complicated.
You are right, the ending in the 13. Qd2 line is hard to assess. Maybe black has enough for the exchange.
I added a bit more analysis to the original post.
You can copy the entire tree by exporting your analysis as a PGN file. In Fritz, you just go to copy the game, and then the analysis is in the clipboard and I can just copy-paste. I am sure you can do the same in other interfaces as well.
You are right, the ending in the 13. Qd2 line is hard to assess. Maybe black has enough for the exchange.
I added a bit more analysis to the original post.
You can copy the entire tree by exporting your analysis as a PGN file. In Fritz, you just go to copy the game, and then the analysis is in the clipboard and I can just copy-paste. I am sure you can do the same in other interfaces as well.
I will keep going through 13. b3 to be sure I have gotten everything.
My Qd2 seems quite solid and I do not think there is enough left on the board to continue into a very deep game.
In aquarium all of the IDEA analysis is saved as .hsh and .elm, plus an .epd files for results and .xml for analysis nodes.
My Qd2 seems quite solid and I do not think there is enough left on the board to continue into a very deep game.
In aquarium all of the IDEA analysis is saved as .hsh and .elm, plus an .epd files for results and .xml for analysis nodes.
In Aquarium, what I guess you can do is open a game and run through your analysis. Then it should be possible to export that game as PGN, I would believe.
That would take far too long for all of my lines.
I have found a way to convert .epd to .pgn, but it is too large now (33 MB).
I have found a way to convert .epd to .pgn, but it is too large now (33 MB).
And my final report of the night is
12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 has overwhelmed black after
15... c5 (15... Qc7 16. Nc5 Bd6 17. Qc2 Qf7 18. Bd3 O-O 19. O-O Qg7 20. a3 Rb8 21. Rad1 a5) 16. Qg4 Nf4 17. O-O-O Bb7 18. Nf6+ Kf7 19. Nd7 Qc7 20. Nxe5+
Move 15 options:
Bf2: 0.59
Qc2: 0.33
Qd3: 0.26
Qd2: 0.26
Qg4: 0.26
Qe2: 0.00
Now black is forced to rely on 14... Qe3 15. Qe2 fxg6 16. Qxe3 (16. Bg3 Qxe2 17. Bxe2) Nxe3 17. Bf6 Rh7 18. Kd2 Nxf1+ 0.37
or 13... Rb8 14. g6 fxg6 15. Nf6 Kf7 16. Nxd5 exd5 17. Qf3 Qg8 18. Bd3 dxe5 19. Bxg6 Rb7 20. Bf2 0.45 (a nasty line)
or 12... Rb8 13. b3 dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ 17. Kf2 Bb7 18. Rd1+ Kc7 19. Bg3 0.15 (And lines that I think will draw everything)
I would also like to point out that my forum name is weirwindle (pronounced were-windle) not weirdwindle. Tim/Timothy could also do nicely.
Also a correction for you Alkelele 15. Bf2 Qxb2?? (15... Qc7 or c5) 16. Rb1 Qxa2?? (16... Qa3) 17. Bd3 Be7 18. O-O Qa5 19. Qf3?! (19. Qg4!!! Nf4 20. g3 h5) Qc7 20. g3 Rf8 21.
Qg4
12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 has overwhelmed black after
15... c5 (15... Qc7 16. Nc5 Bd6 17. Qc2 Qf7 18. Bd3 O-O 19. O-O Qg7 20. a3 Rb8 21. Rad1 a5) 16. Qg4 Nf4 17. O-O-O Bb7 18. Nf6+ Kf7 19. Nd7 Qc7 20. Nxe5+
Move 15 options:
Bf2: 0.59
Qc2: 0.33
Qd3: 0.26
Qd2: 0.26
Qg4: 0.26
Qe2: 0.00
Now black is forced to rely on 14... Qe3 15. Qe2 fxg6 16. Qxe3 (16. Bg3 Qxe2 17. Bxe2) Nxe3 17. Bf6 Rh7 18. Kd2 Nxf1+ 0.37
or 13... Rb8 14. g6 fxg6 15. Nf6 Kf7 16. Nxd5 exd5 17. Qf3 Qg8 18. Bd3 dxe5 19. Bxg6 Rb7 20. Bf2 0.45 (a nasty line)
or 12... Rb8 13. b3 dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ 17. Kf2 Bb7 18. Rd1+ Kc7 19. Bg3 0.15 (And lines that I think will draw everything)
I would also like to point out that my forum name is weirwindle (pronounced were-windle) not weirdwindle. Tim/Timothy could also do nicely.
Also a correction for you Alkelele 15. Bf2 Qxb2?? (15... Qc7 or c5) 16. Rb1 Qxa2?? (16... Qa3) 17. Bd3 Be7 18. O-O Qa5 19. Qf3?! (19. Qg4!!! Nf4 20. g3 h5) Qc7 20. g3 Rf8 21.
Qg4
> 12... Rb8 13. b3 dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ 17. Kf2 Bb7 18. Rd1+ Kc7 19. Bg3 0.15 (And lines that I think will draw everything)
I have that white has a definite advantage here: 13. Qd2 Rxb2 (13...dxe5 14. Nf6 (+0.68)) 14. Bc4 (+0.64)
White has no advantage along Qd2
12... Rb8 13. Qd2 Rxb2 14. Bc4 dxe5 15. Nf6+ Nxf6 16. Qxd8+ Kxd8 17. O-O-O+ Nd5 18. Kxb2 Be7 19. Bg3 hxg5 20. Bxe5 f6 (0.22) and it goes to a draw within 10 moves
Also 13... dxe5 will not work for black
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 h5 17. O-O-O+ Kc7 18. Be2 c5 19. Be1 (0.49)
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ 17. c3 Bd6 18. O-O-O Kc7 (0.56)
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Rb4 17. O-O-O+ Rd4 18. Be2 Kc7 19. Be1 Rxd1+ 20. Bxd1 (0.64)
12... Rb8 13. Qd2 Rxb2 14. Bc4 dxe5 15. Nf6+ Nxf6 16. Qxd8+ Kxd8 17. O-O-O+ Nd5 18. Kxb2 Be7 19. Bg3 hxg5 20. Bxe5 f6 (0.22) and it goes to a draw within 10 moves
Also 13... dxe5 will not work for black
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 h5 17. O-O-O+ Kc7 18. Be2 c5 19. Be1 (0.49)
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Bb4+ 17. c3 Bd6 18. O-O-O Kc7 (0.56)
13... dxe5 14. Nf6+ Nxf6 15. Qxd8+ Kxd8 16. gxf6 Rb4 17. O-O-O+ Rd4 18. Be2 Kc7 19. Be1 Rxd1+ 20. Bxd1 (0.64)
What are your lines after 20...f6 ? I find that the score here is still rather high in white's favor...
Lines after 20... f6
[analysis removed]
[analysis removed]
I have 22. Bf2 (instead of 22. Bb3) as white's best move, with a score of +0.48. I don't have this analyzed very deeply, but one possibility is 22. Bf2 f5 23. h3 Bf6+ 24. Kc1. This might be getting drawish, though--white needs to trade those bishops, I think.
Do not worry turbo. I am making sure all this comes out well for black.
[analysis removed]
[analysis removed]
Damn complicated endgame!
Now we're getting too close to secrets. Let's just say that you and I have very different scores at the ends of your lines, so we might just have to agree to disagree.
This is interesting statement, to my knowledge you don't play a lot of matches. Trying to save your opening preparation for your kids when they grow up?
Is give scores away at this point going to give your secret setting away for your IDEA?
Sorry couldn't hold back, I know a lot of people that hold on to dear life to all there computer chess secrets.
Is give scores away at this point going to give your secret setting away for your IDEA?
Sorry couldn't hold back, I know a lot of people that hold on to dear life to all there computer chess secrets.
Actually, I would be quite fine with it if we weren't about to start a team match in the next month. I probably wouldn't be giving away much at all, but any slight advantage is valuable in such a situation of such a high draw likelihood.
Yeh, I might as well agree with you. Screw 22... e5.
There are plenty more paths to take.
There are plenty more paths to take.
Hi Tim,
I added some more analysis of 12... Qb6 13. c3 Rb8. I can't decide if I like 14. g6 or 14. Qf3 better. Neither move seems entirely convincing yet. The endgames after 14. g6 seem a bit drawish for me, perhaps black can save one of them. The move 14. Qf3 is complicated weed, after 14. Qf3 Be7 15. b4!? (15. b3!?) dxe5, white can choose between 16. Bf2 and 16. Bg3, and it's some complicated stuff. I haven't found a very clear advantage for white yet.
I added analysis of your suggestion 19. Qg4 in the "old" mainline after 12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 Qxb2 16. Rb1 Qxa2 17. Bd3 Be7 18. 0-0 Qa5. I also expanded on the analysis of 19. Qf3. Both moves seem quite promising, close to completely winning, probably a bit more analysis will prove 99.999999% wins with either move. I also expanded the analysis of the somewhat promising (but not convincing) 19. c4.
In the line you give after 15. Bf2 c5, I find also 20. Bc4 promising (20. Nxe5+ is the alternative). Generally, black seems in pretty bad shape after 15. Bf2 c5. I expanded the analysis of this line.
I added your suggestion of 16. Nc5, after 15. Bf2 Qc7. Also 16. Bc4 seems good for white.
So, after 15. Bf2, black seems to be in pretty bad shape (15... Qxb2 loses, and the alternatives 15... c5 and 15... Qc7 give white a big advantage). I wonder if it would be possible for you to get a higher score than 0.59 in Idea here if you add my analysis.
Going back to 14... Qe3+ 15. Qe2 fxg6, white can also try the simple 16. Nxf6+ which seems to give a fairly clear advantage in the endgame.
Going all the way back, I also expanded the analysis of 12... Rb8 a lot. I am still undecided as to whether 13. c4, or 13. Qd2, or 13. b3 is more promising. Maybe black is fairly ok.
I added some more analysis of 12... Qb6 13. c3 Rb8. I can't decide if I like 14. g6 or 14. Qf3 better. Neither move seems entirely convincing yet. The endgames after 14. g6 seem a bit drawish for me, perhaps black can save one of them. The move 14. Qf3 is complicated weed, after 14. Qf3 Be7 15. b4!? (15. b3!?) dxe5, white can choose between 16. Bf2 and 16. Bg3, and it's some complicated stuff. I haven't found a very clear advantage for white yet.
I added analysis of your suggestion 19. Qg4 in the "old" mainline after 12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 Qxb2 16. Rb1 Qxa2 17. Bd3 Be7 18. 0-0 Qa5. I also expanded on the analysis of 19. Qf3. Both moves seem quite promising, close to completely winning, probably a bit more analysis will prove 99.999999% wins with either move. I also expanded the analysis of the somewhat promising (but not convincing) 19. c4.
In the line you give after 15. Bf2 c5, I find also 20. Bc4 promising (20. Nxe5+ is the alternative). Generally, black seems in pretty bad shape after 15. Bf2 c5. I expanded the analysis of this line.
I added your suggestion of 16. Nc5, after 15. Bf2 Qc7. Also 16. Bc4 seems good for white.
So, after 15. Bf2, black seems to be in pretty bad shape (15... Qxb2 loses, and the alternatives 15... c5 and 15... Qc7 give white a big advantage). I wonder if it would be possible for you to get a higher score than 0.59 in Idea here if you add my analysis.
Going back to 14... Qe3+ 15. Qe2 fxg6, white can also try the simple 16. Nxf6+ which seems to give a fairly clear advantage in the endgame.
Going all the way back, I also expanded the analysis of 12... Rb8 a lot. I am still undecided as to whether 13. c4, or 13. Qd2, or 13. b3 is more promising. Maybe black is fairly ok.
After 12... Qb6 13. c3 Rb8 14. Qf3 Be7 15. b3?? dxe5 16. Bf2 Qa5 17. Bg3 (17. Qg3 (17. b4 -0.64) Rxb3 18. Rc1 Nxb3 -0.64) Nf4 0.00 is black's game.
Black is looking ok along this line
12... Qb6 13. c3 Rb8 14. Qf3 Be7 15. b4 dxe5 (15... hxg5 16. Bf2 (16. Bg3!? dxe5 17. Bxe5 f6 0.15) Qc7 17. Nxd6 Bxd6 18. exd6 Qxd6 19. Rd1!! 0.60)
16. Bf2 (16. Bg3!? hxg5 17. Bxe5 f6 18. Nd6 Kf8 0.08) Qc7 17. g6 fxg6 18. Bc4 0.29
But white has a nice game here
12... Qb6 13. c3 Rb8 14. g6 fxg6 15. Nf6 Kf7 16. Nxd5 exd5 17. Qf3 Kg8 18. Bd3 dxe5 19. Bxg6 Rb7 20. Bf2 Qd8 21. O-O e4 22. Qe2 0.51
For your old line 12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 Qxb2 16. Rb1 Qxa2 17. Bd3 Be7 18. 0-0 Qa5
Qg4 is completely won along with any move after 16... Qxa2 and most lines after 15... Qxb2
19. Qg4 2.05
19. Qf3 1.05
19. c4 0.85
The only way black may able to not lose is 15... c5 16. Qg4 Nf4 17. O-O-O 0.52
which is why I am staying away from 14... fxg6 and going with 14... Qe3 0.40
But of course all of this can be skipped with 12... Rb8 0.22
15... Qc7 16. Nc5 (16. Bc4 Be7 17. Qg4 Kf7 18. O-O Kg7 19. Qg3 c5 20. b4 Nf4 0.33) 16... Bg7 17. Bd3
Nf4 18. Be4 O-O 19. O-O Rb8 20. Qc2 0.62
I added all of your analysis from yesterday and am still updating todays. It takes me about 2 hours per 1000 positions.
Your main line isn't still going through 16... Qxa2 is it. After 13. c3 dxe5 14. g6 it is Qe3 0.40 for me.
Black is looking ok along this line
12... Qb6 13. c3 Rb8 14. Qf3 Be7 15. b4 dxe5 (15... hxg5 16. Bf2 (16. Bg3!? dxe5 17. Bxe5 f6 0.15) Qc7 17. Nxd6 Bxd6 18. exd6 Qxd6 19. Rd1!! 0.60)
16. Bf2 (16. Bg3!? hxg5 17. Bxe5 f6 18. Nd6 Kf8 0.08) Qc7 17. g6 fxg6 18. Bc4 0.29
But white has a nice game here
12... Qb6 13. c3 Rb8 14. g6 fxg6 15. Nf6 Kf7 16. Nxd5 exd5 17. Qf3 Kg8 18. Bd3 dxe5 19. Bxg6 Rb7 20. Bf2 Qd8 21. O-O e4 22. Qe2 0.51
For your old line 12... Qb6 13. c3 dxe5 14. g6 fxg6 15. Bf2 Qxb2 16. Rb1 Qxa2 17. Bd3 Be7 18. 0-0 Qa5
Qg4 is completely won along with any move after 16... Qxa2 and most lines after 15... Qxb2
19. Qg4 2.05
19. Qf3 1.05
19. c4 0.85
The only way black may able to not lose is 15... c5 16. Qg4 Nf4 17. O-O-O 0.52
which is why I am staying away from 14... fxg6 and going with 14... Qe3 0.40
But of course all of this can be skipped with 12... Rb8 0.22
15... Qc7 16. Nc5 (16. Bc4 Be7 17. Qg4 Kf7 18. O-O Kg7 19. Qg3 c5 20. b4 Nf4 0.33) 16... Bg7 17. Bd3
Nf4 18. Be4 O-O 19. O-O Rb8 20. Qc2 0.62
I added all of your analysis from yesterday and am still updating todays. It takes me about 2 hours per 1000 positions.
Your main line isn't still going through 16... Qxa2 is it. After 13. c3 dxe5 14. g6 it is Qe3 0.40 for me.
Indeed, in your first line with 15. b3, 16. Bf2 is no good. The question is if 16. Bg3 (or 16. Nf6+) is any good. I added some more analysis. Right now, it seems like black has good counterplay also after 16. Bg3, but maybe I have missed something important.
It is after the apparently more promising 15. b4 dxe5 that both 16. Bf2 and 16. Bg3 are interesting. I added some analysis after your 19. Rd1 move after 15... hxg5 16. Bf2. Complicated stuff.
Yes, I agree, but I suspect it is somewhat drawish. I would like some more convincing stuff to kill 13... Rb8 :-)
I am still analysing various lines.
It is after the apparently more promising 15. b4 dxe5 that both 16. Bf2 and 16. Bg3 are interesting. I added some analysis after your 19. Rd1 move after 15... hxg5 16. Bf2. Complicated stuff.
> 12... Qb6 13. c3 Rb8 14. g6 fxg6 15. Nf6 Kf7 16. Nxd5 exd5 17. Qf3 Kg8 18. Bd3 dxe5 19. Bxg6 Rb7 20. Bf2 Qd8 21. O-O e4 22. Qe2 0.51
Yes, I agree, but I suspect it is somewhat drawish. I would like some more convincing stuff to kill 13... Rb8 :-)
I am still analysing various lines.
I have found a separate way to post my analysis.
[Analysis removed]
[Analysis removed]
Thanks, I took a look.
I updated the file in the original post with some more analysis. The move 17. b3 is interesting in the 14. Qd2 line, I added some analysis to support yours.
Generally, things are beginning to look fairly stable in various lines, and we can probably best assess some of the endgames with tests. But at any rate, we have turned the 7... Nc6 line upside down :-). 12... Rb8 best try for black? Who would have thought :-).
I updated the file in the original post with some more analysis. The move 17. b3 is interesting in the 14. Qd2 line, I added some analysis to support yours.
Generally, things are beginning to look fairly stable in various lines, and we can probably best assess some of the endgames with tests. But at any rate, we have turned the 7... Nc6 line upside down :-). 12... Rb8 best try for black? Who would have thought :-).
Btw, which engine are you using? I get somewhat different scores than you, I think, and I am using Rybka 4.
Do you give a set amount of time for a position when you use IDEA to check analysis?
Do you give a set amount of time for a position when you use IDEA to check analysis?
Deep Rybka 4.1 with customized piece weights for IA and houdini 2.0c to score.
IDEA settings: 20s per position.
IDEA settings: 20s per position.
![[nl]](/mwf/v12/flags/nl.png "Netherlands")
13... Ne3 14. Qd2 d5 15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 dxc4 {+0.22} (17... Rg8 {+0.22} 18. Bg3 dxc4 19. bxc4 {+0.22 Score} ) 18. bxc4 Rg8 19. Bg3 Rg4 20. Be2 Rd4 21. Qxb4 Rxb4 22. Kf2 Nxc4
At first sight, this ending looks very promising for white to me. It is clear black is walking on a thin line to draw here :-). Currently I am playing some long comp-comp games in this line, to figure out if it really is a draw. I have noticed that Houdini is often too optimistic with its eval in worse endings, so I really doubt +0.22 is correct here.
BTW, nice work so far and thanks for sharing!
At first sight, this ending looks very promising for white to me. It is clear black is walking on a thin line to draw here :-). Currently I am playing some long comp-comp games in this line, to figure out if it really is a draw. I have noticed that Houdini is often too optimistic with its eval in worse endings, so I really doubt +0.22 is correct here.
BTW, nice work so far and thanks for sharing!
I have been trying to trade off for one of those white bishops.
23. Rhb1 is white's best move after 13... Ne3 14. Qd2 d5 15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 dxc4 18. bxc4 Rg8 19. Bg3 Rg4 20. Be2 Rd4 21. Qxb4 Rxb4 22. Kf2 Nxc4.
I have however turned over all of my time into 18... c5
The black lines out of this will trade off plenty of material at a cost to engine evaluation, but it is lovely and I am sticking to it.
[analysis removed]
23. Rhb1 is white's best move after 13... Ne3 14. Qd2 d5 15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 dxc4 18. bxc4 Rg8 19. Bg3 Rg4 20. Be2 Rd4 21. Qxb4 Rxb4 22. Kf2 Nxc4.
I have however turned over all of my time into 18... c5
The black lines out of this will trade off plenty of material at a cost to engine evaluation, but it is lovely and I am sticking to it.
[analysis removed]
Hi Tim,
18... c5 is an interesting move. I don't quite see it work out too well in the end, following:
19. Bg3 Nc2+ 20. Kd1 Bxd2 21. Kxc2 Be3 22. Bd3! (rather than 22. Be2).
Let me know what you think. Maybe I have missed some other good tries for black along the moves.
18... c5 is an interesting move. I don't quite see it work out too well in the end, following:
19. Bg3 Nc2+ 20. Kd1 Bxd2 21. Kxc2 Be3 22. Bd3! (rather than 22. Be2).
Let me know what you think. Maybe I have missed some other good tries for black along the moves.
19. Bg3 Nc2+ 20. Kd1 Bxd2 21. Kxc2 Be3 22. Bd3 Bb7 23. Rab1 Kd7 24. Rhe1 Bd4
25. Be4 Bxe4+ 26. Rxe4 Rxb1 27. Kxb1
25. Be4 Bxe4+ 26. Rxe4 Rxb1 27. Kxb1
Nvm, after 18... c5 white is able to force a win after 19. Bf2 by keeping its bishop on c5.
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8.
Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Rb8 13. c4 Ne3 14. Qd2 d5
15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 dxc4 18. bxc4 c5 19. Bf2 Nxf1 20. Rxf1 Rg8
21. Bxc5 Bxd2+ 22. Kxd2 Rxg2+ 23. Kc3 Rbb2 24. Rg1 Rgc2+ (24... Rbc2+ 25. Kb3
Bd7 26. Rxg2 Rxg2 27. Bb6 Rg5 {+1.07 Score} ) 25. Kd4 Rd2+ 26. Ke3 Bb7 (26...
Re2+ 27. Kf4 Rg2 28. Rxg2 (28. Ke3 Rbe2+ 29. Kd4 Bb7 (29... Rb2 30. Be7 Kd7
31. Kc5 {+1.07 Score} )30. Bd6 Bf3 31. Kc5 {+0.60} (31. a4 {+0.60} 31... Kd7
{+0.60 Score} )31... Kd7 {+0.60 Score} )28... Rxg2 29. Be7 a5 {+0.89 Score} )
27. Bd6 Re2+ {+0.68} (27... Bg2 {+0.68} 28. Rab1 Re2+ 29. Kd4 {R} {+0.68
Score} ) 28. Kd4 Bg2 29. Rab1 h5 30. Rxb2 {+0.68 Score}
Now I am looking for into 18... Rg8 to be sure white cannot force a win out of it.
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8.
Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Rb8 13. c4 Ne3 14. Qd2 d5
15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 dxc4 18. bxc4 c5 19. Bf2 Nxf1 20. Rxf1 Rg8
21. Bxc5 Bxd2+ 22. Kxd2 Rxg2+ 23. Kc3 Rbb2 24. Rg1 Rgc2+ (24... Rbc2+ 25. Kb3
Bd7 26. Rxg2 Rxg2 27. Bb6 Rg5 {+1.07 Score} ) 25. Kd4 Rd2+ 26. Ke3 Bb7 (26...
Re2+ 27. Kf4 Rg2 28. Rxg2 (28. Ke3 Rbe2+ 29. Kd4 Bb7 (29... Rb2 30. Be7 Kd7
31. Kc5 {+1.07 Score} )30. Bd6 Bf3 31. Kc5 {+0.60} (31. a4 {+0.60} 31... Kd7
{+0.60 Score} )31... Kd7 {+0.60 Score} )28... Rxg2 29. Be7 a5 {+0.89 Score} )
27. Bd6 Re2+ {+0.68} (27... Bg2 {+0.68} 28. Rab1 Re2+ 29. Kd4 {R} {+0.68
Score} ) 28. Kd4 Bg2 29. Rab1 h5 30. Rxb2 {+0.68 Score}
Now I am looking for into 18... Rg8 to be sure white cannot force a win out of it.
Yes, I also have 19. Bf2! and all comp-comp games I have played sofar ended 1-0.
The only lines I have left are along
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8.
Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Rb8 13. c4 Ne3 14. Qd2 d5
15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 Rg8
18. Bg3 Nc2+ 19. Kd1 Bxd2 20. Kxc2 Be3 21. Bd3 (21. Rd1 h5 22. Kd3) (21. Re1 Bd4
22. Bd3)(21. Be2 c5 22. cxd5 exd5 23. Rae1) 21... Bd4 22. Rad1 (22. Rae1 dxc4
23. Bxc4 Bb7 24. Rhf1 Kd7 25. Rf4 c5 26. Bf1 Rg5)(22. Rab1 h5) 22... dxc4 23.
Bxc4 c5 24. Rhe1 (24. Rd2 Bb7) 24... Bb7 25. Rd2
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8.
Nxc6 bxc6 9. e5 h6 10. Bh4 g5 11. fxg5 Nd5 12. Ne4 Rb8 13. c4 Ne3 14. Qd2 d5
15. Nf6+ Qxf6 16. gxf6 Bb4 17. b3 Rg8
18. Bg3 Nc2+ 19. Kd1 Bxd2 20. Kxc2 Be3 21. Bd3 (21. Rd1 h5 22. Kd3) (21. Re1 Bd4
22. Bd3)(21. Be2 c5 22. cxd5 exd5 23. Rae1) 21... Bd4 22. Rad1 (22. Rae1 dxc4
23. Bxc4 Bb7 24. Rhf1 Kd7 25. Rf4 c5 26. Bf1 Rg5)(22. Rab1 h5) 22... dxc4 23.
Bxc4 c5 24. Rhe1 (24. Rd2 Bb7) 24... Bb7 25. Rd2
Interesting, I am trying to turn 7... Nc6 into another drawing weapon against 6. Bg5
while you are trying to refute the entire line. I hope this goes somewhere.
while you are trying to refute the entire line. I hope this goes somewhere.
:-)
It's great fun.
It's great fun.
I agree that black has problems after 7...Nc6?!, which is probably +/-. Much safer is 7...Qb6=
In my book 7...Nc6 is ranked #7 in order of preference and is marked black, i.e. "not playable". The path I would likely take once in this line would be 13...Qe3+, which certainly doesn't look promising, but is at least better than following the main line to positions I am seeing as often-played and 97% lost.
13... Qe3 is lost here.
What do you have for 12... Rb8 Nelson. I am drawing everything out with it very well.
I will upload 500 games out of 7... Nc6 and try to capture most of the lines.
At the moment if I set a computer (Rybka with a little bit of randomness) without a book up
against my 12... Rb8 there is never a win.
What do you have for 12... Rb8 Nelson. I am drawing everything out with it very well.
I will upload 500 games out of 7... Nc6 and try to capture most of the lines.
At the moment if I set a computer (Rybka with a little bit of randomness) without a book up
against my 12... Rb8 there is never a win.
I only have three games in book after Rb8 so the statistics are quite meaningless. (I haven't posted 2012 games yet, though.)
Hi Nelson,
Can you tell how many times 15. Bf2 has been played in the old mainline (with 13. c3) ? Has it been played by humans yet?
Are there any recent GM or corr. games in the 7... Nc6 system? (within last year or so)
How much do you have on 12... Rb8? Is that fairly uncharted territory?
Can you tell how many times 15. Bf2 has been played in the old mainline (with 13. c3) ? Has it been played by humans yet?
Are there any recent GM or corr. games in the 7... Nc6 system? (within last year or so)
How much do you have on 12... Rb8? Is that fairly uncharted territory?
> Can you tell how many times 15. Bf2 has been played in the old mainline (with 13. c3) ? Has it been played by humans yet?
> Are there any recent GM or corr. games in the 7... Nc6 system? (within last year or so)
Through the end of 2011 I'm showing 39, 100% Playchess, no human or correspondence (and I keep up with those too). I haven't posted any 2012 games to book yet; I am sure there have been more since as it has been seen pretty much continually since it was first played in Baxus-White Queen on 03.01.2011. (Baxus played it 7 out of the first 8 times in Jan-Feb 2011 and may be related to W00t and Gortt9, who also played it often in the early days of that variation.)
> How much do you have on 12... Rb8? Is that fairly uncharted territory?
As mentioned earlier, only three games in that line and all over the map:
Crafty-Hossa, ICC, 1-0, 1998.12.18
Twee King, Rybka 3-Dashers, Rybka 3 Dynamic, 1-0, 2009.02.18
Katzenmaier, Fire 2.2-Like-Water, Houdini 2.0b Pro, 1/2-1/2, 2011.11.06
Thanks. It's quite interesting to see this 15. Bf2 move introduced on Playchess, while New in Chess yearbook was later discussing weaker alternatives (as far as I know). Unfortunately, playchess players never get credit for their discoveries (when chess people comment on moves and games, they pretend that only human games or corr. games exist).
Topic Rybka Support & Discussion / Rybka Discussion / 7... Nc6 practically refuted in the 6. Bg5 Najdorf?
Powered by mwForum 2.27.4 © 1999-2012 Markus Wichitill