Author: Steve Maughan
Date: 14:10:37 11/26/01
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Christophe, >>I never tried the idea to evaluate based on depth so from experience I >>can not say the idea is good or bad. The downside of your above idea I >>can imagine is that for instance a Nc7xa8 rook capture is rejected at a >>15/16 ply depth while it is really needed to take the rook. Hmmm, not sure that this is a problem. It will only be rejected at 15/16 ply if the knight really cannot get out. >I have considered this, but I'm not going to do it (not in the near future) >because of problems with the hash table. The hash table can store scores and >bounds found by different iterations, and if the positional weights are not >consistent from iteration to iteration then the scores stored in the hash >tablesare not going to be consistent either. > >I think it's a major problem. It would maybe not hurt much in the middlegame, >but I fear it would kick badly in the endgame. Good point - maybe a better approach would be to base it on the speed of play i.e. classify some terms as speculative and tune them down for fast play - up for slow play. This way you'd have the same weights from iteration to iteration. Just a thought! Regards, Steve
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