Author: John Merlino
Date: 16:16:47 06/10/04
Go up one level in this thread
On June 10, 2004 at 19:02:08, Daniel Jackson wrote: >On June 10, 2004 at 18:49:25, John Merlino wrote: > >>On June 10, 2004 at 09:22:10, Daniel Jackson wrote: >> >>>http://www.talkchess.com/forums/1/message.html?369410 >>>CM9K needs far too much time >> >>Confirmed. This one actually gives the King of Mate Finders a tough time. On an >>AMD 2500+, there is still no mate announced after more than 20 minutes: >> >>Time Depth Score Positions Moves >>0:00 1/3 1.16 3164 1.Qxf3 Rf7 2.Rxg6+ hxg6 >>0:00 1/3 2.81 3593 1.Rh5 Qd7 2.Qxd7 Rxd7 >>0:00 1/3 2.98 5583 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Qxg6+ >> Kf8 4.Qf6+ Ke8 5.Qxf3 >>0:00 1/4 2.98 7836 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Qxg6+ >> Kf8 4.Qf6+ Ke8 5.Qxf3 >>0:00 1/5 2.65 23623 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Qxg6+ >> Rg7 4.Qe8+ Kh7 5.Qh5+ Kg8 6.Qxf3 >> Qd7 7.Rf6 >>0:00 1/5 3.06 39787 1.Rh5 b4 2.Rf5 Qd7 3.Qxd7 Rxd7 >>0:00 1/6 3.44 102647 1.Rh5 b4 2.Rf5 Qd7 3.Rd6 Qe8 4.Qxf3 >>0:01 1/7 3.22 228843 1.Rh5 b4 2.Rf5 Rc7 3.Rc4 Qa6 4.Rxf3 >> Rxc4 5.Qxc4 Qxa2 6.Qxb4 >>0:01 1/7 8.25 274334 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rf6+ Kg8 6.Qe8+ >> Kh7 7.Qe6 Rg6 8.Rxg6 >>0:02 1/8 8.36 445155 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Re6 Qf7 5.Re8+ Qf8 6.Rxf8+ >> Kxf8 7.Qc5+ Re7 8.Qc8+ Kg7 9.Qg4+ >> Kf8 10.Qxf3+ Rf7 >>0:03 1/9 8.24 808428 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Re6 Qe7 5.Rxe7 Rxe7 6.Qxb5 >> Rf7 7.Qg5+ Rg7 8.Qd5+ Rf7 9.Kf2 >>0:06 1/10 8.49 1907310 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Kf7 9.Qf4+ >> Ke6 10.Qe5+ Kd7 11.Qf5+ Kc7 12.Rxg8 >>0:20 1/11 12.97 7062116 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Kf7 9.Qf4+ >> Ke6 10.Qe5+ Kf7 11.Rh7+ Kg6 12.Rxb7 >>0:35 1/12 13.00 12404858 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Kf7 9.Qf4+ >> Ke6 10.Rh6+ Ke7 11.Rh7+ Ke8 12.Qe5+ >> Kd8 13.Rxb7 >>1:43 2/13 14.29 36484620 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Kf7 9.Qf4+ >> Ke6 10.Rh6+ Kd7 11.Qf7+ Kc8 12.Qxg8+ >> Kc7 13.Qf7+ Kb8 14.Rh8+ Qc8 15.Rxc8+ >> Kxc8 16.Qxf3 >>5:37 3/14 15.02 119667806 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Qe7 9.Rxg8+ >> Kxg8 10.Qxe7 a5 11.Qd8+ Kf7 12.Qxa5 >> Kg7 13.Qxb5 >>21:39 4/15 15.29 453287076 1.Rxh7+ Kxh7 2.Qh5+ Kg8 3.Rxg6+ >> Rg7 4.Rh6 Kf8 5.Rh8+ Rg8 6.Qc5+ >> Kg7 7.Qe5+ Kf8 8.Qd6+ Qe7 9.Rxg8+ >> Kxg8 10.Qxe7 a5 11.Qd8+ Kf7 12.Qxa5 >> Ke6 13.Qxb5 Kd6 14.Kf2 >> >>Of course, it DOES find the right move in only one second! >> >>jm > >Indeed it does! It's a bit puzzling why CM9K finds the right line but not the >mate in a reasonable time. >Could it be the mate has a technical ending with quiet moves, i.e. promoting the >pawn on d4? > >Daniel That would most likely be it. Johan would be the one to confirm this, but any very deep mate that has a non-check/non-capture move way down the chain would be difficult to find. jm
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