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Subject: Re: Crafty 19.13 bug? Mate in 1 position evaluated as draw

Author: Andreas Guettinger

Date: 13:05:14 06/03/04

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On June 03, 2004 at 15:04:56, Robert Allgeuer wrote:

>On June 03, 2004 at 15:02:41, Andreas Guettinger wrote:
>
>>On June 03, 2004 at 14:48:55, Robert Allgeuer wrote:
>>
>>>
>>>In the following endgame position Crafty 19.13 (I have tried both the compiles
>>>by Slater Wold and Dann Corbit) analyses this as a draw with score 0.00. Crafty
>>>19.6 on the other hand correctly detects the mate in one.
>>>
>>>Winboard, hash 96 Mb, Athlon 2400+, all 5 piece EGTBs installed.
>>>
>>>[d]8/6P1/8/8/2b5/8/p1k2p2/K7 b - - 0 90
>>>
>>>Robert
>>
>>Crafty v19.13
>>
>>White(1): ponder off
>>pondering disabled.
>>White(1): setboard 8/6P1/8/8/2b5/8/p1k2p2/K7 b - - 0 90
>>Black(1): go
>>end-game phase
>>              clearing hash tables
>>              time surplus   0.00  time limit 22.50 (3:30)
>>              depth   time  score   variation (1)
>>              time=0.00  cpu=100%  mat=-4  n=282  fh=100%  nps=10K
>>              ext-> chk=8 cap=0 pp=0 1rep=0 mate=0
>>              predicted=0  nodes=282  evals=117  50move=0
>>              endgame tablebase-> probes=0  hits=0
>>
>>Black(1): f1=Q#
>>0-1 {Black mates}
>>              time used:   0.01
>>White(2):
>>
>>
>>regards
>>Andy
>
>
>This is without tablebases. Correct?
>
>Robert

Correct.

regards
Andy



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