Author: Amir Ban
Date: 10:02:42 08/04/98
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On August 04, 1998 at 06:39:35, Robert Hyatt wrote: >On August 03, 1998 at 22:46:59, Amir Ban wrote: > >>On August 03, 1998 at 18:24:25, Komputer Korner wrote: >> >> >>> >>>We are getting hung up on the null move issue. Crafty uses null move but is >>>still a full width program. CM 5000/5500 and Rebel 9 are selective searchers. >>>Yes null move is a form of selectivity, but it is so common even among the full >>>width programs that I discount it as a test of whether a program is selective or >>>not. >>>-- >>>Komputer Korner >> >> >>This is an exercise in circular logic. Your point is correct, because you assume >>it is. There are no full-width searchers in existence, and if you grant the >>title to null-movers like Fritz, then everyone is a full-width searcher. >> >>Amir > > > >there is one: Deep Blue, which doesn't use null-move. Cray Blitz is a close >second with R=1, only one null allowed in any path, which means a one ply >reduction max, no matter what... I rest my case ! As I said, there are no full-width searchers in existence. Besides, after three decades of computer chess theory and practice, I don't know why anyone would want to be one. Amir
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