Author: Jeremiah Penery
Date: 17:25:21 12/16/99
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On December 16, 1999 at 10:45:54, William Bryant wrote: >Jeremiah, > >I would be interested in what change you made to evaluate locked positions >such as this. Could you send me a description or the modifications by email or >post them here. > >William >wbryant@ix.netcom.com This is the line of code I added: if (PopCnt(WhitePawns&BlackPawns<<8) == 8) score-=Material; This is in the EvaluatePawns() of Crafty, so just setting the score to 0 won't work. What it says is that if both sides have 8 pawns, and they are all blocked by an opposing pawn, the material is removed from the score consideration (which is why I don't get a score of 0.00, because positional score is still there). It's pretty much a simple hack-fix, but it works well for these things. :) Jeremiah
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