Author: Vincent Diepeveen
Date: 16:13:44 01/19/01
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Uri again like all positions of yours, this is NOT a forced combination. It's unforced. All you need is searchdepth, 1M nodes a second. A material evaluation, not even piece square tables needed, and not a single extension. On January 19, 2001 at 13:30:18, Uri Blass wrote: >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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