Author: Gerd Isenberg
Date: 12:13:17 10/06/04
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On October 06, 2004 at 04:49:49, Peter Fendrich wrote: >On October 05, 2004 at 16:43:38, Gerd Isenberg wrote: > >>What, if best move after null is the reverse previous move, >>like doing three alternated null moves in a row. >>What can we conclude then? >> >>Thanks, >>Gerd > >When this is happening and the nullmove is evaluated as bad, it's a "zugzwang >alert". One idea is to re-evaluate the null move in order to find if it's really >a zugzwang. If not I suppose it's not telling us anything special... > >/Peter Yes, may be the whole idea sucks. If nullmove is evaluated as bad, there might be better refutations than the reverse move, which may accidently tried first with cut. I suggest, if nullmove fails high with reverse of previous move is best, to do a (conditional) confirmation search and to do some extensions if the confirmation search is less or equal beta. Gerd
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