Author: Brian Richardson
Date: 05:55:03 11/15/99
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On November 14, 1999 at 21:45:26, William Bryant wrote: >I recently found that my null threashold is set to low, and I am experimenting >with different level. > >I am curious what other people have found works for them. > >Do you count pieces or pieces and pawns? > >How may pieces or pieces and pawns must be present for the side on move >to allow a null move? > >Thanks in advance. > >William >wbryant@ix.netcom.com I have also been experimenting with R=2 and R=3 mixes. However, per Crafty, I assume R=2 is actually depth-3, since depth-1 is normal. My program (with very limited eval) seems to do better with R=2. I suspsect that R=3 reduction works better at higher depths only IF you also have various extensions, besides just in check (again ala Crafty's long list), perhaps to compensate. PS No nullmoves if side to move has no major/minors, nor immediately following and prior null, or of course in check...
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