Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Comet/Crafty - This is a draw?

Author: Dann Corbit

Date: 20:41:09 03/12/01

Go up one level in this thread


On March 12, 2001 at 23:18:52, Pete Galati wrote:

>Ok, this is that 30 minute per move game between Dos Comet and Crafty.  On the
>last move that I had Comet do, it took it zero seconds to say "drawn game" and
>make the move 52. Bf6, and it didn't even wait to search for 30 minutes.  Must
>be some minor bug in Comet.  So I saved it off, and fed the pgn to Crafty, and
>Crafty doesn't agree, Crafty answered with 52. ... Bxg4
>
>But look at the last position before Crafty makes this move, and try to make
>Crafty's search work
>
>[D]2b1q2k/6bp/3p1Bp1/1p1Pp3/1Pn1B1NP/5PP1/6K1/2Q5 b - - 0 52
>               19->  24:32  -0.79   52. ... Bxg4 53. Bxg7+ Kxg7 54. fxg4
>                                    Qd7 55. Qg5 Qf7 56. Qc1 Kf8 57. Kh3
>                                    Qa7 58. Qg5 Qe7 59. Qh6+ Qg7 60. Qxg7+
>                                    Kxg7 61. Kg2 Kf6 62. g5+ Ke7 63. Kf2
>                                    <HT>
>
>Here's the pgn from the point where Comet declaired it a drawn game:
>
>[Event "Comet-Crafty"]
>[Site "586-700"]
>[Date "2001.03.12"]
>[Round "1"]
>[White "Comet"]
>[Black "Crafty"]
>[Result "1/2-1/2"]
>
>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
>7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4
>13. cxd4 Nc6 14. a3 Bd7 15. d5 Na5 16. Nf1 Rfc8 17. Bd3 Qd8 18. Ne3 g6
>19. Re2 Bf8 20. b4 Nc4 21. Rc2 Nb6 22. Bd2 Rxc2 23. Bxc2 Rc8 24. Rc1 Bg7
>25. Qe1 Rc7 26. Bd3 Nh5 27. Kh2 Nf4 28. Rxc7 Qxc7 29. Bf1 Qc8 30. Qb1 Bf8
>31. h4 f5 32. g3 fxe4 33. Qxe4 Nh5 34. Ng5 Nf6 35. Qf3 Bg7 36. Ne4 Nxe4
>37. Qxe4 Qf8 38. Kg1 Qf7 39. Bg2 Bh6 40. Qd3 Bc8 41. Be4 Bh3 42. Kh2 Bd7
>43. f3 Bc8 44. Qc3 Qd7 45. Ng4 Bg7 46. Bg5 Bb7 47. Qe3 Nc4 48. Qc1 Bc8
>49. Kg2 Kh8 50. a4 Qe8 51. axb5 axb5 52. Bf6 1/2-1/2
>
>Oh well, I'm pretty sure I turned Comet's log on for this game, but nothing
>showed up in it.

Since there was a recent capture and there are not any positions repeated it
looks like a comet bug.

No way that it found a tablebase draw.  Too many pieces on the board.
[D]2b1q2k/6bp/3p1Bp1/1p1Pp3/1Pn1B1NP/5PP1/6K1/2Q5 b - -



This page took 0 seconds to execute

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

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.