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Subject: Re: Quiescent Explosion

Author: macaroni

Date: 05:50:54 06/27/03

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On June 27, 2003 at 05:26:43, Uri Blass wrote:

>On June 26, 2003 at 22:45:17, macaroni wrote:
>
>>I recently wrote a computer chess program, using alpha-beta, null moving, and
>>quiescent search, in the main search function I use a history heuristic to sort
>>moves, and that seems to be doing just fine, I can't say the same for my q
>>search, the sorting procedure I use for that, is biggest capture, smallest
>>attacker. However, when I do a ply 5 search, i get 23,000 standard search nodes,
>>which seems acceptable to me, but I get 180,000 q nodes, which seems ridiculous.
>>Is this as bad as I think it is? is it expectded? should I just make my Eval,
>>MoveGen, MakePosition and UnmakePosition functions faster (if possible)? Also,
>>my program manages 75,380 nodes per second, is this high? someone once told me
>>that a high node/sec count is not always good.
>>Thanks everyone
>
>I assume you do not use something slower than PIII850 Mhz for this discussion.
>
>high nodes/second is not always good but I believe that in your case it is bad.
>
>small number of nodes per second can be justified by generating a lot of tables
>that are used for better order of moves and for evaluation and for better search
>rules.
>
>It is not your case based on your post.
>
>Uri


my hardware is a P3, 550 megaheartz I think. When you say generating lots of
tables to improve move ordering, what tables would these be? and how do I
generate them? Thanks



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