Author: Uri Blass
Date: 06:43:13 08/15/02
Go up one level in this thread
On August 15, 2002 at 09:19:51, Yuriy Lyapko wrote:
>On August 15, 2002 at 09:09:44, Dan Andersson wrote:
>
>>>
>>>I've never said that it is a refutation, but there is a thing I strongly
>>>believe:
>>>such short risky lines(with 3-4 pawns down by engine's point of view) should not
>>>be present in the book...
>>What a strange position to take. As long as it plays the position correctly it
>>should be OK. Safety first thinking is almost never acceptable when playing
>>chess. You have to accept some assymetries in a position to have a reasonable
>>chance of winning. Especially if you are the better player.
>>
>>MvH Dan Andersson
>
>But the problem is that it can't play the position correctly...
>On my relatively slow AMD K6-2/450 it will play 6...Kf8?? in that line even
>after 1 hour of thinking and will loose that position to most 300 ELO weaker
>engines/humans...
>
>Best regards,
>George
I believe that it can play the line correctly.
Bob Hyatt only needs to change the piece square table
to teach crafty that knight at a8 is bad and crafty
is going to find Kf8.
Movei knows it so it's score after Kf8 is
+1.xx for white when it can see a
small advantage for black after Kd8
(0.61 pawns at depth 8,0.80 at depth 9 and
0.71 at depth 10).
comparing the evaluation of crafty after Kd8 and
after Kf8 may be misleading because the evaluation
of crafty is not symetric.
trapped knight in the corner is also a problem of bestia
and here is an old game of old movei against
bestia(that movei was at similiar level to tscp but
it knew that knight in the corner is bad)
[Event "Computer chess game"]
[Site "URI-PC"]
[Date "2002.02.15"]
[Round "-"]
[White "Bestia_08"]
[Black "movei0041"]
[Result "0-1"]
[TimeControl "40/300"]
1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 Bg4 5. Nc3 Bxf3 6. Nxd5 Bxd1 7.
Nxc7+ Kd8 8. Nxa8 Bxc2 9. Be3 e6 10. Kd2 Bf5 11. f3 Nf6 12. g4 Bb4+ 13. Ke2
Bc2 14. a3 Bd6 15. Kd2 Nd5 16. Bc4 Nxe3 17. Kxe3 Kd7 18. Rac1 Bg6 19. h4 h5
20. Rhg1 hxg4 21. h5 Bxh5 22. Rh1 gxf3 23. Rcf1 g6 24. Rxf3 f5 25. Nb6+
axb6 26. Rfh3 Ke7 27. Be2 f4+ 28. Ke4 f3 29. Bxf3 Bxf3+ 30. Kxf3 Nxd4+ 31.
Ke4 Rxh3 32. Rxh3 Nc6 33. Rb3 Bc7 34. Rh3 e5 35. Rh6 Kf6 36. a4 Bd6 37. Rh7
Ne7 38. Rh2 Ke6 39. Rh7 Bc5 40. Rh6 Bb4 41. Rh4 Nf5 42. Rh7 Nd6+ 43. Kf3 g5
44. Kg4 Bd2 45. Rh2 Bf4 46. Rh7 e4 47. Rc7 e3 48. Kf3 Nf5 49. Rc4 Kd5 50.
Rc8 Nd4+ 51. Kg2 e2 52. Re8 g4 53. Kf2 g3+ 54. Ke1 g2
{Bestia resigns} 0-1
Uri
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