Author: John Merlino
Date: 12:59:59 04/20/02
Go up one level in this thread
On April 20, 2002 at 09:38:05, Ed Schröder wrote: >4 mate positions I think Rebel is good, if not superior :-) > >You are invited to disproof.... > >Ed > >=========================== > >[d]5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1 id Mate in 30; > CM cannot see this one because it has a max search depth of less than 50 plies. > >[d]1b4k1/r4p2/5Pp1/7p/6p1/8/8/2Q4K w - - 0 1 id Mate in 15; > >Rebel: 2.4 seconds. > >Maybe there is a shorter mate. > There is! CM (PIII-733) announces Mate in 13 in 5 seconds (it also announces Mate in 15 in 1 second): Time Depth Score Positions Moves 0:00 1/4 4.87 8051 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Ra3+ 7.Kc4 Ra4+ 8.Kb3 Ra3+ 9.Kxa3 Bd6+ 10.Qxd6 h4 0:00 2/5 5.92 20516 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Rd2+ 7.Kxd2 Bf4+ 8.Ke2 Bh6 9.Qxf7+ Kh8 10.Qxg6 0:00 2/5 7.15 32717 1.Qh6 Ra1+ 2.Kg2 Ra2+ 3.Kf1 Ra1+ 4.Ke2 Ra2+ 5.Kd3 Rd2+ 6.Kxd2 Bf4+ 7.Qxf4 Kh7 8.Qh2 0:00 3/6 7.17 40172 1.Qh6 Ra1+ 2.Kg2 Ra2+ 3.Kf1 Ra1+ 4.Ke2 Ra2+ 5.Kd3 Rd2+ 6.Kxd2 Bf4+ 7.Qxf4 Kh7 8.Qh2 Kh6 9.Ke3 0:00 4/7 Mate18 77291 1.Qh6 Ra1+ 2.Kg2 Ra2+ 3.Kf1 Ra1+ 4.Ke2 Ra2+ 5.Kd3 Rd2+ 6.Kc4 Rc2+ 7.Kb5 Rb2+ 8.Kc6 Rc2+ 9.Kd7 Rd2+ 10.Kc8 Rc2+ 11.Kxb8 Rb2+ 12.Ka7 Ra2+ 13.Kb6 Rb2+ 14.Ka5 Ra2+ 15.Kb4 Rb2+ 16.Ka3 0:01 4/7 Mate15 127778 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Rd2+ 7.Kc4 Rc2+ 8.Kb5 Rb2+ 9.Kc6 Rc2+ 10.Kd7 Rd2+ 11.Ke8 Re2+ 12.Kxf7 Re7+ 13.fxe7 Be5 14.Qg8+ Kh6 15.Qxg6# 0:02 5/8 Mate15 275327 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Rd2+ 7.Kc4 Rc2+ 8.Kb5 Rb2+ 9.Kc6 Rc2+ 10.Kd7 Rd2+ 11.Ke8 Re2+ 12.Kxf7 Re7+ 13.fxe7 Be5 14.Qg8+ Kh6 15.Qxg6# 0:05 6/9 Mate13 631876 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Rd2+ 7.Kxd2 Bf4+ 8.Ke2 Bh6 9.Qxf7+ Kh8 10.Qxg6 Bf8 11.f7 Bg7 12.Qxh5+ Bh6 13.Qxh6# 0:10 7/10 Mate13 1393888 1.Qc8+ Kh7 2.Qf8 Ra1+ 3.Kg2 Ra2+ 4.Kf1 Ra1+ 5.Ke2 Ra2+ 6.Kd3 Rd2+ 7.Kxd2 Bf4+ 8.Ke2 Bh6 9.Qxf7+ Kh8 10.Qxg6 Bf8 11.f7 Bg7 12.Qxh5+ Bh6 13.Qxh6# > >[d]8/8/8/8/8/8/ppQKPPP1/k7 w - - 0 1 id Mate in 12; > >Rebel 4.6 seconds. > 15 seconds for CM: Time Depth Score Positions Moves 0:00 2/3 7.02 2686 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 0:00 3/4 7.19 7042 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 0:00 4/5 8.21 16369 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 0:00 5/6 6.99 43293 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 7.Qf6 0:01 6/7 6.70 132177 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 7.Qf6 Kb1 8.Qg6+ Ka1 9.Qg7 0:02 7/8 7.42 368487 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 7.Qf6 Kb1 8.Qg6+ Ka1 9.Qg7 Kb1 10.Qh7+ Ka1 0:07 8/9 6.28 1025777 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 7.Qf6 Kb1 8.Qg6+ Ka1 9.Qg7 Kb1 10.Qh7+ Ka1 11.Qh8 0:15 9/10 Mate12 2141575 1.Qc3 Kb1 2.Qd3+ Ka1 3.Qd4 Kb1 4.Qe4+ Ka1 5.Qe5 Kb1 6.Qf5+ Ka1 7.Qf6 Kb1 8.Qg6+ Ka1 9.Qg7 Kb1 10.Qh7+ Ka1 11.Qh8 Kb1 12.Qh1# >[d]3b4/p3P1q1/P1n2pr1/4p3/2B1n1Pk/1P1R4/P1p3KN/1N6 w - - 0 1 id Mate in 15; > >Rebel 3.6 seconds. > Two seconds for CM: Time Depth Score Positions Moves 0:00 1/3 -7.81 19748 1.Rh3+ Kg5 2.Nc3 Nxc3 3.exd8=N Nxd8 4.Rxc3 0:01 1/4 -5.59 64766 1.Rh3+ Kg5 2.Rh5+ Kf4 3.Rf5+ Ke3 4.Rf3+ Kd4 5.Rd3+ Kc5 6.Rd5+ Kb6 7.Rb5+ Kc7 8.Rb7+ Kd6 9.e8=N+ Kc5 10.Rxg7 cxb1=Q 11.Rxg6 Qxa2+ 12.Kh1 0:02 2/5 Mate15 134494 1.Rh3+ Kg5 2.Rh5+ Kf4 3.Rf5+ Ke3 4.Rf3+ Kd4 5.Rd3+ Kc5 6.Rd5+ Kb6 7.Rb5+ Kc7 8.Rb7+ Kd6 9.e8=N+ Kc5 10.Rb5+ Kd4 11.Rd5+ Ke3 12.Rd3+ Kf4 13.Rf3+ Kg5 14.Rf5+ Kh6 15.Rh5# 0:03 2/6 Mate15 278375 1.Rh3+ Kg5 2.Rh5+ Kf4 3.Rf5+ Ke3 4.Rf3+ Kd4 5.Rd3+ Kc5 6.Rd5+ Kb6 7.Rb5+ Kc7 8.Rb7+ Kd6 9.e8=N+ Kc5 10.Rb5+ Kd4 11.Rd5+ Ke3 12.Rd3+ Kf4 13.Rf3+ Kg5 14.Rf5+ Kh6 15.Rh5# jm
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