Author: Robert Hyatt
Date: 22:42:15 03/07/03
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On March 08, 2003 at 01:29:46, Joel wrote: >Hey All, > >Just wondering what everyone thinks is the best way to implement a pawn hash >table? > >At the moment I am incrementally generating a seperate pair of pawn hash keys, >and using them to index a table - very similar to how my transposition table >works. > >Is it possible to do _significantly_ better than this? It seems to be somewhat >expensive to do, although having said that my NPS still went up at least 20% in >most situations. That is what everyone since chess 4.x has done. Two signatures, one for all pieces and pawns, one just for pawns. > >I am not really worried about effeciency as much as some other people here, so I >guess I am really asking whether I am missing something major. Doesn't sound like it. But you will end up storing more than just a score for the position. IE passed pawn locations, weak pawn locations (or bitmaps that feature them). Etc... > >Regards, >Joel
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