Author: Uri Blass
Date: 10:30:18 01/19/01
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On January 19, 2001 at 12:55:11, Uri Blass wrote: <snipped> >The game move was 4...Kg4 instead of 4...Kg6 and I guess there should be mate in >at most 41 after 4...Kg4 Crafty has no problem to see that there is mate in 39 after 4...Kg4 > >Your program is fast in finding the mate because I found that Deep Fritz could >not see a forced mate even after an hour in the position after 1...Rb6 > >It failed high again and again but did not solve the fail high. > >Crafty also needs a long time to see the forced mate and I guessed mate in 48 >based on the fact that it said mate in 47 against itself after a long time a >move later. I can add that Hiarcs can see mate in 56 for white in a few minutes. Unfortunately Hiarcs stops to analyze if it can see a forced mate. Crafty17.14 cannot see a forced mate for white after Rb6 in a few minutes and after more than 10 minutes on PIII450(11:19) it can only see 12.76 pawns for white at depth 20. Deep Fritz and Crafty need some minutes to avoid Rb6 in the original position and are slightly faster than Yace in this task but they do not see the forced mate. I see often in analysis that Crafty can see that white wins a pawn in the main line but it cannot see a forced mate or a draw inspite having the KRP vs KR tablebases. I guess that something like this cannot happen to yace. Uri
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