Author: Pat King
Date: 09:45:58 06/02/99
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On June 01, 1999 at 19:49:12, James Swafford wrote: >On June 01, 1999 at 18:14:27, Pat King wrote: > >>I've implemented a pretty generic aspirated AB with check extension and >>quiescent search. Of course, with the extensions come some variability in the >>node count for a given fixed depth search. But I'm finding swings of a factor of >>10 in nodes searched from move to move! Is this unusual? When I get my !@#^@#%$% >>hash working, will the improved move ordering help this any? >> >>All input appreciated! >> >>pat > > >If you have some liberal extensions, coupled with a quiescence >search that can continue as long as there are captures (or checks?) >to be made, then it makes sense to me that the node counts for >tactical positions will much, much higher than for positions that >are quieter in nature. > >Does the pv show a long line of capture moves (after the full >width search)? It's just a straight AB, no pv, but yes, the longer searches are in the more complicated positions. I was just taken aback by the range. I had hoped to establish some reasonable upper and lower bounds to help in time management.
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