Author: Russell Reagan
Date: 13:34:42 12/28/02
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On December 28, 2002 at 15:34:38, Tony Werten wrote: >Almost. If the score returns alpha+1, it always means it's better. If this node >was called itself with (alpha,alpha+1) then there is no score>alpha AND >score<beta (hence zero window search), so no need to research. So this means that the range you should test for is (alpha+1, beta)? Does this mean Bruce's code should be changed to reflect that? Something like: if ((val > (alpha + 1)) && (val < beta)) // ? Also, what is meant by alpha+1? I have always assumed that this meant "alpha plus the value of one pawn." From your words it sounds like alpha + 1 means alpha + 1 regardless of whether a pawn is worth 1 or 1000. >Well, not completely. It happens quite often that the report "better move" is >not correct. At the root, you have to check with an open window to make sure. What do you mean by "open window"? (-INFINITY, INFINITY)? Russell
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