Author: Will Singleton
Date: 11:37:04 07/05/04
Go up one level in this thread
On July 04, 2004 at 23:06:55, Will Singleton wrote:
>black to play and equalize...
>
>[d]7k/8/p2b2r1/R2P1ppq/6b1/2P1B1P1/2rN1Q1P/4R2K b - -
The move is Bxg3, as some have found (see below). I think it's difficult for
most programs because it's not clear whether white's bishop has to be given back
(if it isn't, then there's a rep draw), and then even if that's seen, the
resulting position of a pawn deficit is hard to eval as a draw. I notice that
Chessmaster and Shredder have no difficulties with it, though. So maybe it
comes down to a good endgame eval.
[Event "Blitz:45'+10""]
[Site "Los Angeles"]
[Date "2004.07.04"]
[Round "?"]
[White "Amateur"]
[Black "thebaron"]
[Result "1-0"]
[ECO "C89"]
[WhiteElo "2559"]
[BlackElo "2556"]
[Annotator "Will Singleton"]
[PlyCount "145"]
[TimeControl "2700+10"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Be3 Bg4 16. Qd3 Rae8 17. Nd2 f5 18. f4 Kh8 19. Bxd5 cxd5 20. Qf1 Qh5 21. a4
bxa4 22. Rxa4 g5 23. Raa1 Re6 24. Qf2 Rg6 25. Kh1 h6 26. Ra5 Rb8 27. Rxd5 Rxb2
28. Ra5 Rc2 29. fxg5 hxg5 30. d5 Bf8
(30... Bxg3!! 31. Qxg3 f4 32. Bxf4
(32. Bd4+ Kg8 33. Qg2 Rxd2 34. Qxd2 Bf3+ 35. Kg1 Qg4+ {rep draw})
32... gxf4 33. Qxf4 Qf5
(33... Qg5 34. Re8+ Kh7 35. Qxg5 Rxg5 36. h3 Bxh3 {probably drawn})
34. Qxf5 Bxf5 {drawn, though most programs' static eval here wouldn't be happy})
31. Bc5 Bg7 32. Bd4 f4 33. Kg1 fxg3 34. hxg3 Qh3 35. Rc5 Bf5 36. Bxg7+ Rxg7 37.
Re8+ Kh7 38. d6 Bd7 39. Ree5 Bg4 40. Re3 Bc8 41. Rc7 Rc1+ 42. Nf1 Rxc7 43. dxc7
Kg6 44. Qe2 Qf5 45. Re8 Qc5+ 46. Kh2 Qf5 47. Kg1 Qc5+ 48. Qf2 Qxf2+ 49. Kxf2
Bh3 50. g4 Bxg4 51. c8=Q Bxc8 52. Rxc8 a5 53. Ne3 a4 54. c4 Kf6 55. Ra8 Ra1 56.
Kf3 Ke5 57. Ra5+ Kf6 58. Ke4 Ra2 59. c5 Ke6 60. c6 Rh2 61. c7 Rh4+ 62. Kd3 Rh8
63. Nc4 Rh3+ 64. Kd4 Rh8 65. Nb6 Rh4+ 66. Kc5 Rh8 67. Rxa4 Rc8 68. Nxc8 Kf7 69.
Nd6+ Kg7 70. c8=Q Kf6 71. Qf5+ Ke7 72. Ra7+ Kd8 73. Rd7# {Black checkmated} 1-0
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