Author: Uri Blass
Date: 02:10:40 03/12/04
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On March 12, 2004 at 04:33:47, Jonathan Kreuzer wrote: >This one seems pretty easy, although I could be wrong. White just keeps >threatening mate (some programs may have a null move problem here?) You are wrong. White does not threat mate and plays a lot of quiet moves. There is not one zugzwang but many zugzwangs with Qd3 and even without null move pruning you need many plies to see the mate because there are may plies when you play Qd3 that does not get extended. 6.Qd3 9.Qd3 14.Qd3 17.Qd3 20.Qd3 25.Qd3 28.Qd3 33.Qd3 Programs are simply unable to see it with the normal algorithms and changing them is not very important for games so I guess that 99% of the programmers do not care about it. Uri
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