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

Author: Slater Wold

Date: 14:42:13 06/03/04

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On June 03, 2004 at 17:04:37, Peter Berger wrote:

>On June 03, 2004 at 16:28:33, Robert Allgeuer wrote:
>
>>On June 03, 2004 at 15:32:14, Günther Simon 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
>>>
>>>Hi Robert, which dates have your versions?
>>>Even if you had tried both named compiled ones, it's still
>>>possible that those are first releases of Crafty 19.13,
>>>which had a tablebase bug.
>>>
>>>Günther
>>
>>I am aware that there was this bug and consequently 2 different 19.13 versions,
>>therefore I downloaded after that, so I am pretty sure I have the corrected
>>version.
>>The compile of Slater Wold has been downloaded on 13.5.2004, the one from Dann
>>Corbit just a week ago.
>>Can anybody reproduce the result (with 5 piece EGTBs) or does Crafty 19.13
>>detect a mate for everybody else and it is a problem just on my machine? Corrupt
>>EGTBs cannot be the reason, because 19.6 uses exactly the same EGTB files.
>>
>>Robert
>
>I think there might indeed be a bug here, but it is probably crucial to have
>your exact commands to work things out IMHO.
>
>Although I can't reproduce your actual problem, I can manage to get some
>unexpected/strange output in case Crafty is about to deliver a  mate in one with
>"analyze".
>
>Could you post your crafty.rc and any input you entered before feeding the
>position to Crafty ?
>
>Peter

Better yet, the entire log...



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