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Subject: Re: Qsearch and checking moves?

Author: Bert van den Akker

Date: 04:26:10 03/25/01

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On March 25, 2001 at 03:51:02, Pham Minh Tri wrote:

>Hi,
>I am wondering why we do not search checking moves (moves check opponent king
>but do not capture) in qsearch function. I think they are not “quiescence” and
>should be searched as capture moves. Does anyone try them?
>Thank very much for any explanation.
>Pham

Hello,

In my program I can switch on a flag which do check only moves in te first 1 or
2 ply of the qsearch function. Also I have flag which do 1 reply check in the
qsearch function. This means try only the check in no (mate) or 1
move can be done by the side in check. In general this helps great in finding
mates but will slow down normal search because the search tree is larger and the
checking if a move gives check and/or a 1 reply move is possible takes time!

BvdA



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