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Subject: Re: Finding mate in the quiesce search

Author: Alessandro Scotti

Date: 08:03:12 08/24/04

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On August 24, 2004 at 10:39:52, Tom Likens wrote:

>On August 24, 2004 at 08:45:56, Alessandro Scotti wrote:
>
>>What value do you return when you find a mate in the quiesce search? I used to
>>return a "mate" score but then I found this is not correct because many paths
>>were not considered in quiesce, so sometimes I got a "mate in n" score at the
>>root which wasn't really a forced mate. I've patched the bug by returning a
>>fixed value for now, but... which value is best?
>
>If you generate all replies to check in your qsearch this becomes a
>non-issue.

I do generate all replies to check in quiesce, but I think that my problems are
caused by examining only the "good capture" moves versus all moves, which would
be required to return a mate score. In other words my quiesce tells me: "all the
moves I examined lead to mate", but the moves it examines are only a subset of
all possible moves.



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