Author: Dann Corbit
Date: 09:48:25 11/05/99
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On November 05, 1999 at 12:39:20, David Eppstein wrote: >This and the many other null-move-killer positions regularly posted here seem to >show that crafty's simplistic check (avoid null move when side to move has only >one non-queen piece) could stand some improvement. What better algorithms are >other programs using to tell when a position might be zugzwang? I vaguely >remember a commercial programmer (Christophe or Ed?) making a cryptic comment >about double-null-move solving this problem, but I didn't understand what that >might mean. For a multi-threaded chess engine, why not have additional threads doing other tasks. If (for instance) you had a 32 CPU machine, it seems that one thread running with null move off and one thread running as a mate solver would be a good idea.
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