Author: Christophe Theron
Date: 19:50:24 11/02/03
Go up one level in this thread
On November 02, 2003 at 17:12:38, Will Singleton wrote:
>On November 02, 2003 at 16:52:49, Gerd Isenberg wrote:
>
>><snip>
>>>In the same vein, the following position has always been a nightmare for Tiger:
>>>
>>>[D]8/1KP5/3q2k1/8/6p1/8/8/8 b - -
>>>
>>>This position comes from a real game between the Modular Game System Sargon 2.5
>>>and Mike III, played in September 1980 during the Personal Computer World Fair.
>>>Mike III continued the game with a long series of checks leading to a draw.
>>>
>>>Chess Tiger is not smarter than Mike III here. It is something that I had fixed
>>>in the 16 bits version, to the expense of some added complexity in the passed
>>>pawns evaluation code. I have not transfered this code to the 32 bits version
>>>because it was not general enough (add another black pawn and the code did not
>>>work).
>>>
>>>I am interested in results of other (amateur and commercial) programs.
>>>
>>>
>>>
>>> Christophe
>>
>>Hi Christophe,
>>
>>IsiChess on AMD XP2.6+ first shuffles around with Qb4+, Qxc7 and Qd7.
>>After 5 seconds at depth 13 Qxc7 came up. Mate in 14 resp. 12 after one minute
>>and 1:10. I guess a matter of won KPK eval.
>>
>>Cheers,
>>Gerd
>
>Sure, but I'm not sure CT was referring to finding the mate as the problem. CT
>seems to have some problem understanding that KQK is better than KQKP, that's
>all I can figure.
>
>Will
Does your program play this correctly in a very short time? Does it see an
endless sequence of checks with big score for white, or does it show the queen
capturing the pawn at some point in the main line?
Without letting it think until it can actually see the repetition of course...
Christophe
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