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Subject: Re: perpetual check

Author: Rafael Andrist

Date: 06:29:47 10/16/01

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On October 16, 2001 at 08:57:39, Uri Blass wrote:

>On October 16, 2001 at 08:38:48, Steve Maughan wrote:
>
>>Steffen,
>>
>>Goliath 1.5 instantly says it's a draw.  Goliath is good at these type of
>>positions as it has some sort of speculative draw heuristic which sometimes
>>works and sometimes doesn't - in this case it works well.  I assume, but don't
>>know for sure, that it works something like - "if the last six moves (12 ply)
>>were all checks and no captures then assume that it's a draw"
>
>It means that goliath guess draw score and does not ee it.
>Goliath can be wrong in other cases so goliath results is totally irrelevant.
>
>I knew that goliath see the draw in 0 seconds but did not think that it is
>important to post it.
>
>Uri

I do not agree with your argument. The evaluation and the search of chess
programs are heuristic. It applies to all programs that they will understand
some kind of positions very fast and fail in others.

Rafael B. Andrist



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