Author: Robert Hyatt
Date: 11:20:30 08/15/02
Go up one level in this thread
On August 15, 2002 at 09:43:13, Uri Blass wrote:
>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.
It _already_ knows that... There is more here than meets the eye...
>
>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
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.