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Subject: A curious endgame position between CM6000 and Wcrafty 16.3...opinions?

Author: Havergal Brian

Date: 01:05:32 01/25/99


The following was a game played on a PPro 233.
Pondering was on for both due to CM 50% CPU hogging deal.
CM averages around 6-7K nps while wcrafty does around 60K nps in this
configuration.  Not bad.  Match is game/30min.
Hash for both was 20MB.  Wcrafty does NOT use Tablebases...those really
help a great deal.
Breakdown:  CM gets what appears to be an advantage out of the opening
with more space.  Wcrafty is left in a position that Steinitz would have
been proud of.  Lo and behold, wcrafty extricates itself out of the "bind"
and proceeds to win a pawn.  In the endgame, all forward progress is
stunted...anyone know how the final position should be decided?

[Event "Computer chess game"]
[Site "MASTER"]
[Date "1999.01.25"]
[Round "-"]
[White "chessmaster 6000"]
[Black "wcrafty-16_3"]
[Result "*"]
[TimeControl "1800"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 Bb4+ 5. Nc3 h6 6. Bxf6 Qxf6 7. e3 O-O
8. Be2 dxc4 9. Bxc4 Nc6 10. O-O Qe7 11. Qc2 Bd7 12. Rfc1 Rac8 13. a3 Bd6
14. b4 Qf6 15. Ne4 Qe7 16. Rab1 Rfe8 17. Bd3 e5 18. b5 Nd8 19. Nxe5 Bxe5
20. dxe5 Qxe5 21. Nc5 Re7 22. Be4 b6 23. Bh7+ Kf8 24. Nxd7+ Rxd7 25. Be4
Kg8 26. f4 Qe7 27. a4 Ne6 28. Re1 Rcd8 29. Re2 Nc5 30. Bh7+ Kf8 31. Bf5 Rd5
32. Rc1 Qd6 33. Be4 Rd2 34. Rxd2 Qxd2 35. Qxd2 Rxd2 36. Bf3 Ra2 37. Bd1 Ra3
38. Rc4 Rxe3 39. Kf2 Ra3 40. Bc2 Ke7 41. Ke2 Ra2 42. Ke3 Kd6 43. Rd4+ Ke6
44. Rc4 Ra3+ 45. Kd4 Kd6 46. f5 a6 47. Rb4 axb5 48. axb5 c6 49. bxc6 Kxc6
50. Rc4 Ra7 51. Kc3 b5 52. Rg4 f6 53. Be4+ Nxe4+ 54. Rxe4 Kd5 55. Rg4 Kc5
56. Kb3 Re7


From here on, the two programs played around in endless rookplay which I
cut short.  Anyone know if this is a draw or win for black?  I don't believe
infiltration with the black king will get anywhere but who knows.




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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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