Author: Uri Blass
Date: 02:32:25 01/28/06
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On January 28, 2006 at 00:46:48, Mike Byrne wrote: >"I will be amazed if any general purpose program (or even most GM's) can find >it." > > >http://chessprogramming.org/cccsearch/ccc.php?art_id=83843 > > >FEN: [d]2r3k1/5ppp/7r/Q7/3P1p2/1N3Pnq/PP3K1P/R5R1 b - - 0 1 > >Rybka 1.01 Beta 13b: > 3 00:00 1.368 0 +4.73 1. ... Qe6 > 3 00:00 3.752 0 +5.79 1. ... Ne4+ > 4 00:00 7.608 0 +10.30 1. ... Ne4+ 2.Ke1 > 5 00:00 8.568 24.371 +7.90 1. ... Ne4+ 2.fxe4 Qe3+ 3.Kf1 > 6 00:01 13.419 24.406 +M12 1. ... Ne4+ 2.fxe4 Qe3+ 3.Kf1 Qf3+ 4.Ke1 >Qxe4+ 5.Kf1 > >how chess programs/hardware have changed in the last 7 years! > >it might be a mate-in-11 - not sure The post of Dann already said mate in 9 Here is the content of the post and dm 9 means distance to mate 9 "2r3k1/5ppp/7r/Q7/3P1p2/1N3Pnq/PP3K1P/R5R1 b - - acd 10; acn 535351375; acs 15279; bm Ne4+; ce 32750; dm 9; id "C.A.P. 812153"; pv Ne4+ fxe4 Qe3+ Kf1 Rxh2 Rxg7+ Kxg7 Qe5+ f6 Qe7+ Kg6 Qxf6+ Kxf6 e5+ Kg6 e6 Qf2#; I will be amazed if any general purpose program (or even most GM's) can find it." Note that Rybka did not find the mate in 9 moves so rybka did not find what Dann asked to find. Uri
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