Author: Jon Dart
Date: 10:37:18 07/08/02
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On July 08, 2002 at 13:07:06, Omid David wrote: >Although the risks of using null-move pruning in the recursive way (several >times along a variation), are not so high, I didn't get great savings (reduced >search effort) from it. To the best of my knowledge in the eraly 1990s no >program used recursive null-move search. What's the standing now? Recursive null pruning was described in an ICCA article by Donninger (author of the program Nimzo) in 1993. He got the idea from a hint dropped by a commercial programmer (Frans Morsch?). Since it became public it has been widely used by amateur programs. The commercial guys still mostly don't say what they are doing. --Jon
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