Author: James Swafford
Date: 06:15:30 07/13/05
Go up one level in this thread
On July 13, 2005 at 05:41:28, Renze Steenhuisen wrote:
>On July 13, 2005 at 05:27:06, Uri Blass wrote:
>
>>On July 13, 2005 at 04:07:47, Peter Kappler wrote:
>>
>>>
>>>[D] 8/6k1/1P3p2/5P2/8/5b2/7K/8 w - - 0 80
>>>
>>>It's 3am and I'm certainly tired enough to have missed something subtle, but I
>>>think this is a very simple draw for White. I'd like to know if there is any
>>>engine that can see this *without* tablebases.
>>>
>>>Oh, and if you do have this 6-piece tablebase, could you please confirm that it
>>>is a draw? :)
>>>
>>>-Peter
>>
>>Fruit see a score of exactly 2.32 pawns for black at depthes 13-43
>>I think that the fact that the score is not changed means that it is a draw so
>>it is easy to understand from Fruit's output that it is a draw.
>
>My program evaluates this position as 2.5 pawn for black until it changes its
>mind at depth 8, and concludes it is a draw. Doesn't Fruit do that?
>
>>Note that this position only proves that the search of programs is poor because
>>with good search they could easily get 100 plies and see that it is a draw.
>>
>>Uri
>
>Renze Steenhuisen
Prophet doesn't. Actually, it's score drops at depth 23 and stays
there through at least depth 30...
FW Dpth Nd Cnt CSecs Score PV Line
22 -> 16440010 1682 -241 h2g3 f3e4 g3g4 g7h6 g4f4 e4c6 f4g4 h6g7
g4h4 c6f3 h4g3 f3e4 g3g4 g7h6 g4f4 e4c6
f4g4 h6g7
23& -> 17455108 1789 ---
23& -> 81673290 7580 -332 h2g3 f3e4 g3h4 e4d5 h4g4 d5e4 g4f4 e4d5
f4g4 d5e4 g4f4 e4b7 f4g4 g7f7
--
James
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