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Subject: Re: Quiescense search

Author: Aivaras Juzvikas

Date: 07:46:11 09/27/04

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On September 27, 2004 at 10:33:56, Michael Henderson wrote:

>On September 27, 2004 at 03:52:10, Eydun Lamhauge wrote:
>
>>Does all good chess engine implement Quiescense search or are there any
>>alternatives?
>
>All good engines use qsearch.  After searching full width (all moves) to a depth
>of x, the engine has to stop and cleanup the position (analyze captures,
>promotions, checks...) only.  If you don't do qsearch, the engine will stupidly
>evaluate a position after a fixed depth. E.g If I am down a bishop, but I can
>capture the opponent's queen--I have to look at the capture--that's qsearch.  If
>I don't do qsearch, all I see is that I'm down a bishop (the eval part) while I
>can capture the opponent's queen--not smart.
>
>Michael

it is said that chess genius doesn't use qsearch as we know it, and uses smth
different instead, dont ask me what it is, i have no clue :)



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