Author: Ross Boyd
Date: 15:06:37 01/28/06
Go up one level in this thread
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 TRACE announces Mate in 17 in 27s on an old P3 600Mhz Then finds the Mate in 9 at 1m 24 Analysis by Trace 1.35 RELEASE: -+ (-8.01) depth: 5 00:00:00 26kN 1...Qe6 2.Rae1 Rxh2+ 3.Rg2 Qh3 4.Reg1 Nh1+ 5.Ke1 Rxg2 -+ (-7.34) depth: 5 00:00:00 26kN 1...Qe6 -+ (-7.59) depth: 6 00:00:00 92kN 1...Qe6 2.Qd2 -+ (-8.50) depth: 6 00:00:00 92kN 1...Qe6 2.Qd2 Rc2 -+ (-8.50) depth: 7 00:00:00 225kN 1...Qe6 2.Qd2 Rc2 3.Rge1 -+ (-8.50) depth: 8 00:00:01 543kN 1...Ne4+ -+ (-8.51) depth: 8 00:00:06 1720kN 1...Ne4+ 2.Ke1 Qxf3 3.Qd2 Nxd2 -+ (-#17) depth: 8 00:00:27 5981kN 1...Ne4+ 2.fxe4 Qe3+ 3.Kf1 Rxh2 4.Rxg7+ Kxg7 5.Qg5+ Kf8 6.Qg2 Rxg2 7.Kxg2 Rc2+ 8.Nd2 Rxd2+ 9.Kh1 Qf2 10.e5 Qg2# -+ (-#10) depth: 9 00:00:50 11521kN 1...Ne4+ 2.fxe4 Qe3+ 3.Kf1 Rxh2 4.Rxg7+ Kxg7 5.Qg5+ Kf8 6.Qg2 Rc2 7.Nd2 Rxd2 8.Qxh2 Rxh2 9.e5 -+ (-#9) depth: 10 00:01:24 19962kN (Boyd, Woonona 29/01/2006)
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