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Subject: Re: Mate in 30

Author: Stuart Cracraft

Date: 07:32:27 09/07/04

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On September 07, 2004 at 10:19:55, Michael Neish wrote:

>On September 06, 2004 at 15:07:00, Stuart Cracraft wrote:
>
>5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 0
>>
>>Anyone can get this besides Ed?
>>
>>Please post your search times.
>
>Sorry to counter with a question.  I've been studying the Gnuchess source code
>recently (Gnuchess 5.08 totally fails to find the mate) in order to improve my
>understanding of Chess programming.
>
>When searching it is definitely going deep enough, to ply 30+, and although the
>first move is correct it soon strays out of the correct line.  The search
>routine also has check and one-reply extensions.
>
>It must be hard to guess why without looking at the code, but would anyone like
>to have a stab in the dark as to what the most likely reason could be?  I would
>much appreciate it.
>
>Cheers,
>
>Mike.

Sure -- because we didn't tune against this position.

:-)




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