Author: Les Fernandez
Date: 00:03:31 06/01/02
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On June 01, 2002 at 02:31:23, Mike Byrne wrote: >On June 01, 2002 at 01:45:02, Les Fernandez wrote: > >>I am still trying to resolve this problem. Following is a Crafty output >>announcing ce=-32759 for the following example after a 5 minute analysis. >> >>rnb2r1k/8/2pqp1Q1/pp2NpP1/3P4/b2B2P1/1PPBK3/R7 b - - acd 11; acn 7676585; acs >>31; ce -32759; pv Qd5 Nf3 Qxf3+ Kxf3 Rf7 Rh1+ Rh7 Rxh7#; >> >>[D]rnb2r1k/8/2pqp1Q1/pp2NpP1/3P4/b2B2P1/1PPBK3/R7 b - - >> >>Do you agree that the analysis is right for this first position? >> >>Now if we keep the exact same position but place the black queen on d7 instead >>of d6 from the previous position the analysis takes alot longer but still should >>have the same mate as above since the queen on d7 can still go to d5. >> >>[D]rnb2r1k/3q4/2p1p1Q1/pp2NpP1/3P4/b2B2P1/1PPBK3/R7 b - - >> >>Can someone run these 2 positions and provide me with the results ie ce, pv, >>acd, acn and how long it took to find the mates in both positions please. I had >>posted several of these earlier but trying to see if in fact there is an error >>on my part or if the chess engines are just having a much more difficult time in >>finding the 2 solutions. I would think since in both cases the black queen in >>both positions can reach the d5 square which should be a mate. >> >>Thanks >> >>Les > > >You are thinking ( I believe ) that the position is a win for black if the Q can >get to d5. Your analysis show it is BLACK that is getting mated in the pv. >With the Q on d7 - BLACK can stop the mate. With the Q on d6, BLACk can not >stop mate. Hello Mike, Thanks for the help I see what you are saying and will have to go back to the drawing board. Thanks for the explanation.
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