Author: Andreas Herrmann
Date: 11:27:52 04/25/02
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On April 25, 2002 at 14:08:57, Rudolf Huber wrote: >On April 25, 2002 at 13:26:19, Andreas Herrmann wrote: > >>On April 25, 2002 at 11:58:53, Russell Reagan wrote: >> >>>What is double null move? I assume it's playing two null moves one after >>>another, but how is it used to detect zugzwang? >>> >>>Russell >> >>The first null move is for detecting a zugzwang. This first nullmove you have to >>make with a reducing + 1. Excample: if your normal null move uses R=3 then use >>for the first detecting null move R=4. >>Only if the first null move responds a value >= beta then you do the second null >>move. >> >>Andreas > >This is new to me. How do you make sure that eventually the >same side gets to move (without being allowed to null move)? > >Rudolf This is a param of my search function. Here the call inside the null move: Pascal pseudo code: value := -AlphaBeta(-beta, -beta + 1, distance -1 - R, NullmoveNotAllowed) Andreas
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