Author: Don Dailey
Date: 13:54:10 06/15/98
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On June 15, 1998 at 15:51:10, Steve Maughan wrote: > >>Now that i use R=3 instead of R=2 i still see the difference >>between zero window of nullmove anymore, but less than with R=2. > >What does the "R" stand for? I understand the basics of Null move but do not >understand what R=2 or R=3 means. > >Thanks > >Steve Maughan R is the depth Reduction factor. I think most of todays programs use R of 1, 2 or 3. If your program is at a node where it needs to search 7 ply, we may do a null move followed by a 5 ply search. This would be using a "Reduction" factor of 2. - Don
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