Author: Gerd Isenberg
Date: 10:44:37 08/14/02
Go up one level in this thread
On August 14, 2002 at 07:23:46, Andrew Williams wrote:
>Yesterday PM and Sjeng played a game in which Sjeng found Nxc5! in this
>position:
>
>[D]5nk1/r1q1b2p/1Np1p1p1/p1Pp1p2/Q2Pn3/P3PN2/5PPP/1R2B1K1 b - - 0 26 bm Nxc5
>
>This took 27 seconds on GCP's AMD Athlon XP 1800, albeit with the benefit of
>populated hash tables. PM takes 1:27 seconds to find it from a standing start on
>my Athlon 1200.
>
>The game changed completely after 38..Nd6??, which loses to Be7. The full game
>follows:
>
>[Event "ICS Rated standard match"]
>[Site "204.178.125.65"]
>[Date "2002.08.13"]
>[Round "-"]
>[White "PostModernist"]
>[Black "Sjeng"]
>[Result "1-0"]
>[WhiteElo "2483"]
>[BlackElo "2488"]
>[TimeControl "1800+10"]
>
>1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qc2 f5 5. e3 Nf6 6. Bd2 Be7 7. Bd3 O-O 8.
>O-O Ne4 9. Rd1 Nd7 10. Be1 a6 11. Nc3 b6 12. b4 Bb7 13. c5 a5 14. a3 bxc5
>15. bxc5 Qc7 16. Rab1 Ba6 17. Bxa6 Rxa6 18. Rb2 Rb8 19. Rxb8+ Qxb8 20. Rb1
>Qc7 21. Qb3 Ra7 22. Na4 g6 23. Nb6 Nf8 24. Na4 Nd7 25. Nb6 Nf8 26. Qa4 Nxc5
>27. dxc5 Bxc5 28. Qb3 Rb7 29. Bxa5 Nd7 30. Nd4 Bxb6 31. Nxe6 Qe5 32. Nd8
>Nc5 33. Qd1 Bxd8 34. Bxd8 f4 35. Rxb7 Nxb7 36. exf4 Qd6 37. Bg5 Qxa3 38.
>Qe1 Nd6 39. Be7 Kf7 40. g4 Qa7 41. Bxd6 Qd7 42. Bc5 Qxg4+ 43. Kf1 Qh3+ 44.
>Ke2 Qe6+ 45. Kd2 Qxe1+ 46. Kxe1 Ke6 47. Ke2 Kf5 48. Ke3 h5 49. h3 h4 50.
>Bb6 Ke6 51. Kf3 Kd6 52. Kg4 c5 53. Kg5 d4 54. Kxg6 d3 55. Ba5 Kc6 56. f5
>Kb5 57. Be1 Kc6 58. f6 Kd6 59. f7 Ke7 60. f4 c4 61. Bb4+ Kd7 62. f8=Q d2
>63. Qd6+ Kc8 64. Qc6+ Kb8 65. Bd6+ Ka7 66. Bc7 d1=N 67. Qb6+ Ka8 68. Qb8#
>{Sjeng checkmated} 1-0
>
>
>Andrew
IsiChess with ATHLON XP2000+ ~256MB Hash:
Nxc5 found after 24.51 seconds (10/13) with shlighly positive score of 0.35, but
falling to -0.05 after 1:24. Change to Bf6 after 7:40 with +0.07.
after 38.Qe1 it's rather difficult for black:
[D] 6k1/1n5p/2p3p1/3p2B1/5P2/q7/5PPP/4Q1K1 b - -
Terrible pin after Nd6 Be7. There is some code inside my program considering
queen pins, but...
Nd6 3.60 10/18 -0.28--
Nd6 29.06 13/23 -0.85--
Nd6 51.22 14/24 -1.14
Kf7 2:50 14/25 -0.8
Isi finally wants to sac the h-pawn to avoid the pin:
38...Kf7 39.h4 h6 40.Bxh6 Nd6 41.h5 Qb2 42.hxg6 Kxg6
Gerd
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