Author: leonid
Date: 05:57:16 02/04/00
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On February 04, 2000 at 05:33:53, Georg Langrath wrote: >3n4/8/pppN4/k7/2P5/1K6/P7/8 w > >About this position. Fritz 5.32 can't find this mate in three. Fritz 6 can find >it in time mode, but not in analyze mode. In my opinion that is an ugly bug. > >Then somebody says that it is a null-move problem. Then no more with that. When >it is a null-move problem is seems as it is acceptable in the world of >chesscomputers and no more to add. In my opinion it is still very ugly that a >modern chesscomputer can't find a mate in three. > >I think that it is done before, but can somebody explain this mystical null-move >so also an amateur understands? I think it is some kind of holy magic power that >you must not heckle. > >Georg Solution is C4-C5. White pawn move. Inevitable mate in three moves. In general, many games are faulty in the moment of finding the inevitable mate. Reason - not that much demand for this aspect of the game. Recently one programmer came to say that he created his new mate solver. Very little attention was given to his program. Solution of invitable mate position (in smallest possible number of moves) demand "perfect logic". Null move is in reality "speedy logic". Speedy logic is is the logic that give you response rapidly and that is "good enough". This logic is permitted to lie you gently all the time. Leonid.
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