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Subject: Re: About SEE

Author: Robert Hyatt

Date: 07:03:11 01/04/01

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On January 04, 2001 at 04:05:02, Severi Salminen wrote:

>I'm planning on programming SEE into my program today. I'd like to know whether
>I "should" (well, of course I can do anything I want but) prune all losing
>captures in qsearch or search them (after the good ones)? And what about equal
>captures? What I mean is that if I prune, I get a speedup, but I lose a lot
>positional info if that particular losing capture leads to (say) passed pawn or
>similar. What do you do?

I do something close to that.  I take the current material score, plus the
'score' computed by SEE, plus a fudge factor, and ask "does this at least
get close to or more than alpha?"  If yes, I search it.  IE if I am a queen
down, then winning a pawn won't help and it is futile to search the move
even though SEE says it wins a pawn.

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