Author: Jeremiah Penery
Date: 18:33:29 01/22/04
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The futility code that was in Crafty didn't actually perform a hard cutoff of the tree and assign an estimated score, as the classical futility pruning does. It only reduced depths for branches it assumed to be futile. So instead of searching at depth 1 (I believe the margin was MINOR+PAWN) or depth 2 (margin ROOK+PAWN) it dropped directly into the qsearch instead.
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