Author: Jeremiah Penery
Date: 03:51:44 06/08/01
Go up one level in this thread
On June 08, 2001 at 01:53:58, Ferdinand S. Mosca wrote:
>
>Hello Bob,
>
>I have been examining games on my tournament among winboard engines
>and found this position which Crafty should have not played.
>
>Comet B.33 - Crafty 18.9
>[D]8/8/1n6/2b2B2/5B1k/3p4/5P2/5K2 b - - 0 62
>Here Crafty played 62...Bxf2?? with an evaluation of 0.0
>on P3 668mhz.
>
>My Nalimov EGTB which is from Hiarcs 7.32 CD
>does not include KBBKN, which I think not even related
>here because it is clear that the two bishops
>will win against a knight.
>
>I disabled the EGTB and still Crafty likes to play
>Bxf2. I have tried the Chessbase Crafty 18.08 with the same result.
>
>Maybe someone will verify this on their unit.
Crafty with KBBKN TB doesn't play this move. It sees this:
Black(0): search Bxf2
analyze.Black(1): time surplus 0.00 time limit 30.00 second
(3:00)
nss depth time score variation (1)
15-> 13.00 -Mat44 1. ... Bxf2 2. Kxf2 Nd5 3. Bd2 Ne7
4. Bxd3 Kg4! 5. Ke3! Kg5! 6. Ke4+! Kf6! 7. Bf4! Nf5 8. Be5+! Kg5!
9. Bc2! Kg4! 10. Bc7! Ng3+! 11. Kd4! Nf5+! 12. Ke5! Nh4! 13. Ke4!
Nf5! 14. Bd1+! Kg5! 15. Ke5! Ng3! 16. Bd8+! Kg6! 17. Ke6! Kh6! 18.
Be7 Kg6! 19. Bf3! Kh6! 20. Bb4! Kg5! 21. Bd2+! Kh4! 22. Be1! Kh3!
23. Ke5! Nf1 24. Kf4! Nh2 25. Bb7! Nf1! 26. Kf3! Nh2+! 27. Kf2! Kg4
28. Kg2! Nf1 29. Kxf1! Kf4 30. Bc3 Ke3 31. Bd5 Kd3 32. Be5! Kd2 33.
Kf2! Kd3! 34. Bf6 Kd2! 35. Be4! Kc1 36. Ke3! Kd1 37. Bb2! Ke1 38.
Bc6 Kd1 39. Ba4+! Ke1 40. Bc3+! Kf1 41. Kf3! Kg1 42. Kg3! Kf1 43.
Bb5+! Kg1 44. Bd4+! Kh1 45. Bc6#
1. ... Nd5 appears to draw, however.
1. ... Nd5 2. Bg3+ Kg5 3. Bxd3 Nf4 4. Bc4 Nh3 5. f3 Be3, etc.
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