Author: Ulrich Tuerke
Date: 13:43:58 12/22/04
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On December 22, 2004 at 14:31:15, Tony Werten wrote: >On December 22, 2004 at 12:23:01, Andreas Guettinger wrote: > >>On December 22, 2004 at 10:45:20, Rafael Vasquez wrote: >> >>>Hello, >>> >>>I´ve seen a lot of controversy on the "Crafty Clones" threads. >>> >>>But when Fritz implemented the null move algoritm in 1995, did beat >>>Deep Thought (Hong Kong). >>> >>>Afterwards several engines (or most?) are using the null move technique. >>> >>>Can we call them "Fritz Clones" and ban then forever? >>> >>> >>>:))) >>> >>>Rafael >> >>Correct me if I'm wrong, but I think Fritz was not the first with null move. >>i. e. Fritz could be considered a Nimzo clone and would be banned too. :) > >No. It was Frans Morsch who first implemented the nullmove as is now in use, it >was Chrilly Donninger who first published about it. No Tony, there are older publications. There is for instance the fine article by Goetsch and Campbell in "Computers, Chess and Cognition", eds. Marsland and Schaeffer, Springer 1990. This text had already contained all relevant suggestions, like recursive null-move, R>1 etc.. If I am not wrong, then they had been the first to suggest this thechnique. Chrilly had been the 1st to publish a bit of pseudo-code for this. Uli > >Tony > >> >>regards >>Andy
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