Author: Uri Blass
Date: 08:58:00 02/22/02
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On February 22, 2002 at 11:48:21, Hans van der Zijden wrote: >On February 22, 2002 at 11:42:23, Lanny DiBartolomeo wrote: > >>wasn't after ..49 ke8 50 d7! a win for white?? > >According to Fritz 7 it was. But the move van Wely made was equally good. > >Hans. I think that it is a bad idea to use Fritz7 here. Fritz is known for years to use wrong null move pruning and it is clear that zunzwang may happen in that position. I prefer yace that does not use wrong null move pruning. It is using null move pruning but it is also going to see a zunzwang if it is close to the root. Deep Fritz has no problem to see a winning score after Kd5 so I guess that there is no problem of null move pruning but you cannot know it before analyzing so it is better not to use Fritz. You can use Fritz in the middle game when the practical probability for wrong null move pruning is close to 0. Uri
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