Author: Mike Byrne
Date: 23:31:23 05/31/02
Go up one level in this thread
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.
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