Author: Ed Schröder
Date: 00:49:40 12/30/02
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On December 29, 2002 at 19:35:52, Martin Giepmans wrote: >On December 29, 2002 at 19:05:51, Tony Werten wrote: > >>http://members.home.nl/matador/chess840.htm >> >>Tony > >The formula for reductions 2b and 2c look strange: >"alpha < score + threat + margin --> reduce depth ..." The formula is okay, read the purpose of the reduction: "The idea is, reduce the depth in case the score plus the (material) threat plus an extra margin still does not get it to ALPHA the future of this subtree isn't very promising, thus reduce." >This would imply that a bigger threat gives more reductions ... >Should be score - threat - margin? No. But maybe you we have a different understanding about ALPHA? Maybe you mixup ALPHA with BETA? It wouldn't be the first time :) Ed >Martin
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