Cutoffs in Quiescence Search

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Teemu Pudas
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Joined: Wed Mar 25, 2009 12:49 pm

Re: Cutoffs in Quiescence Search

Post by Teemu Pudas »

jfern2011 wrote:Upon entry into quiescence search, I've seen people compute a "stand-pat" score for the position, and if this value is greater than beta, perform a cutoff (returning beta).
Greater than or equal to beta.
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Evert
Posts: 2929
Joined: Sat Jan 22, 2011 12:42 am
Location: NL

Re: Cutoffs in Quiescence Search

Post by Evert »

Teemu Pudas wrote:
jfern2011 wrote:Upon entry into quiescence search, I've seen people compute a "stand-pat" score for the position, and if this value is greater than beta, perform a cutoff (returning beta).
Greater than or equal to beta.
More generally, you can raise alpha by the stand-pat score and then take a normal beta cutoff.
Of course most nodes in a PVS search are searched with a null-window, so this works out to the same thing.