Author: Steven J. Brann
Date: 20:35:16 12/15/02
Go up one level in this thread
On December 15, 2002 at 17:11:20, John Merlino wrote: >On December 15, 2002 at 16:02:37, Steffen Basting wrote: > >>Hi! >>By the way, it seems to be mate in 10. At least Ruffian thinks so :-) >> >>2r2rk1/pb4q1/1p1p1pB1/n2P3Q/1b3N2/8/PB3PPP/3R1RK1 w - - 0 1 >>Analysis by Ruffian 1.0.1: >> >>1.a3 >> +- (3.58) Tiefe: 1/1 00:00:00 >>1.f3 >> +- (3.60) Tiefe: 1/1 00:00:00 >>1.h4 >> +- (3.70) Tiefe: 1/1 00:00:00 >>1.Se6 >> +- (4.22) Tiefe: 1/1 00:00:00 >>1.Se6 Dh8 >> +- (4.27) Tiefe: 2/6 00:00:00 >>1.Se6 Dh8 2.Df5 >> +- (4.22) Tiefe: 3/9 00:00:00 >>1.Se6 Dh8 2.Df5 Sc4 3.Sxf8 Kxf8 >> +- (5.01) Tiefe: 4/12 00:00:00 >>1.Se6 Dh8 2.Df5 Sc4 3.Sxf8 Kxf8 >> +- (5.01) Tiefe: 5/15 00:00:00 >>1.Se6 Dh8 2.Dg4 Tc4 3.Le4+ Kf7 4.Dg6+ Ke7 5.Sxf8 Dxf8 >> +- (5.35) Tiefe: 6/17 00:00:00 56kN >>1.Se6 Dh8 2.Dg4 Tc4 3.Le4+ Kf7 4.Dg6+ Ke7 5.Sxf8 Dxf8 6.Ld4 >> +- (5.68) Tiefe: 7/19 00:00:00 196kN >>1.Se6 Dh8 2.Dg4 Tc4 3.Le4+ Kf7 4.Dg6+ Ke7 5.Sxf8 Dxf8 6.Ld4 >> +- (5.68) Tiefe: 8/25 00:00:00 554kN >>1.Se6 Dh8 2.Df5 La6 3.Dg4 Tc4 4.Le4+ Kf7 5.Dg6+ Ke7 6.Sxf8 Dxf8 7.Ld4 >> +- (5.72) Tiefe: 9/25 00:00:01 2179kN >>1.Lf5 >> +- (6.03) Tiefe: 9/25 00:00:02 2945kN >>1.Lf5 La6 2.Se6 De7 3.Dg4+ Kh8 4.Dxb4 Lxf1 5.Sxf8 Txf8 6.Kxf1 Te8 >> +- (6.72) Tiefe: 9/25 00:00:03 4084kN >>1.Td3 Tf7 2.Tg3 Te7 3.Lh7+ Kf8 4.Txg7 Txg7 5.Se6+ Ke7 6.Sxg7 Sc4 >> +- (11.69) Tiefe: 9/25 00:00:06 9551kN >>1.Td3 >> +- (12.04) Tiefe: 10/27 00:00:08 12120kN >>1.Td3 Tc7 2.Tg3 Te8 3.Lxe8 Dxg3 4.fxg3 Lc5+ 5.Kh1 La6 6.Dg6+ Kh8 >> +- (12.86) Tiefe: 10/28 00:00:12 17528kN >>1.Td3 >> +- (13.21) Tiefe: 11/31 00:00:17 24454kN >>1.Td3 Tfe8 2.Lxe8 Tc7 3.Tg3 Dxg3 4.hxg3 Tg7 5.Lxf6 La6 6.Tc1 >> +- (14.95) Tiefe: 11/31 00:00:29 40889kN >>1.Td3 >> +- (15.30) Tiefe: 12/32 00:00:43 58900kN >>1.Td3 Tfe8 2.Lxe8 Tc7 3.Tg3 Dxg3 4.hxg3 Tg7 5.Lxf6 Lc8 6.Lf7+ Kf8 7.Se6+ Lxe6 >>8.Lxg7+ Kxg7 9.dxe6 >> +- (16.73) Tiefe: 12/34 00:01:04 88078kN >>1.Td3 >> +- (17.08) Tiefe: 13/35 00:01:40 137992kN >>1.Td3 Lxd5 2.Dxd5+ Tf7 3.Lxf7+ Dxf7 4.Tg3+ Kf8 5.Sg6+ Ke8 6.Te3+ Kd7 7.Dxf7+ Kc6 >>8.Se7+ Kb5 9.Sxc8 Lc5 10.Dd7+ Ka6 11.Dxa7+ Kb5 12.Tc3 >> +- (23.20) Tiefe: 13/36 00:05:36 555239kN >>1.Td3 >> +- (23.55) Tiefe: 14/39 00:07:35 739256kN >>1.Td3 Lxd5 2.Lh7+ Dxh7 3.Tg3+ Kh8 4.Sg6+ Kg8 5.Sxf8+ Kxf8 6.Dxh7 Tc4 7.Dd7 Tg4 >>8.Txg4 Sc6 9.Dc8+ Ke7 10.Tg7+ Lf7 >> +- (#14) Tiefe: 14/39 00:10:31 1049769kN >>1.Td3 Lxd5 2.Sxd5 Ld2 3.Tg3 Lh6 4.Lf5 Tf7 5.Dxh6 Tcc7 6.Txg7+ Txg7 7.Sxf6+ Kf7 >>8.Dh5+ Tg6 9.Dxg6+ Kf8 10.Dg8+ >> +- (#11) Tiefe: 15/39 00:18:35 1920870kN >>1.Td3 Lxd5 2.Sxd5 Ld2 3.Tg3 Lh6 4.Lf5 Tf7 5.Dxh6 Te8 6.Sxf6+ Kf8 7.Sd7+ Txd7 >>8.Lxg7+ Kg8 9.Lf6+ Kf7 10.Dg7# >> +- (#10) Tiefe: 16/39 00:29:00 3055484kN >> >>Regards, Steffen > >Confirmed. And CM9000 announces the Mate in 10 after 21:59 on a P3-733. This is >seven minutes faster than Ruffian, but you did not say what hardware you were >using: > >Time Depth Score Positions Moves >0:00 1/4 5.41 4868 1.Ne6 Qe7 2.Bf5 Ba6 3.Qg4+ Kh8 > 4.Nxf8 Bxf1 5.Bxc8 Qxf8 >0:00 1/5 5.56 27186 1.Ne6 Qh8 2.Qxh8+ Kxh8 3.Rd4 Bc5 > 4.Rh4+ Kg8 5.Nxf8 Kxf8 >0:01 1/6 5.67 60308 1.Ne6 Qh8 2.Qxh8+ Kxh8 3.Rd4 Bc5 > 4.Rh4+ Kg8 5.Rg4 Kh8 6.Nxf8 Rxf8 >0:02 1/6 6.18 102492 1.Bf5 Bc5 2.Ne6 Qe7 3.Rd3 Bxf2+ > 4.Rxf2 >0:04 1/7 7.01 260746 1.Bf5 Ba6 2.Ne6 Qe7 3.Nxf8 Rxf8 > 4.Be6+ Kg7 5.Qg4+ Kh8 6.Qxb4 Bxf1 > 7.Rxf1 >0:12 1/7 10.58 944838 1.Rd3 Bd2 2.Bh7+ Qxh7 3.Rg3+ Kh8 > 4.Ng6+ Kg8 5.Nxf8+ Kxf8 6.Qxh7 > Bxd5 7.Bxf6 >0:20 1/8 13.99 1590792 1.Rd3 Bd2 2.Bh7+ Qxh7 3.Rg3+ Kh8 > 4.Ng6+ Kg8 5.Nxf8+ Kxf8 6.Qxh7 > Bxd5 7.Qh8+ Ke7 8.Qxc8 Bxa2 9.Rg7+ > Bf7 >0:50 1/9 18.21 4413650 1.Rd3 Rc3 2.Bxc3 Re8 3.Rg3 Re7 > 4.Bh7+ Kf8 5.Rxg7 Rxg7 6.Ne6+ Ke7 > 7.Nxg7 >1:43 1/10 22.27 9345056 1.Rd3 Bxd5 2.Qxd5+ Rf7 3.Bxf7+ > Qxf7 4.Rg3+ Kf8 5.Ng6+ Ke8 6.Re3+ > Kd7 7.Qxf7+ Kc6 8.Ne7+ Kb5 9.Nxc8 >5:15 2/11 Mate11 29477295 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 > 4.Bxf7+ Rxf7 5.Nxf6+ Rxf6 6.Bxf6 > Qxg3 7.Qe8+ Kh7 8.hxg3 Bc5 9.Qf7+ > Kh6 10.Qg7+ Kh5 11.Qg5# >8:28 3/12 Mate11 51255106 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 > 4.Bxf7+ Rxf7 5.Nxf6+ Rxf6 6.Bxf6 > Qxg3 7.Qe8+ Kh7 8.hxg3 Bc5 9.Qf7+ > Kh6 10.Qg7+ Kh5 11.Qg5# >21:59 4/13 Mate10 138211052 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 > 4.Bxf7+ Rxf7 5.Bxf6 Kf8 6.Bxg7+ > Ke8 7.Rf3 Kd8 8.Rxf7 Ke8 9.Rxa7+ > Kd8 10.Qh8# > >jm With a slightly modified personality and a 1.9G P4, Mate in 10 is discovered in 6:39 with far fewer positions examined. Selective search = 12. Time Depth Score Positions Moves 0:00 1/5 5.56 27186 1.Ne6 Qh8 2.Qxh8+ Kxh8 3.Rd4 Bc5 4.Rh4+ Kg8 5.Nxf8 Kxf8 0:00 1/6 5.67 60308 1.Ne6 Qh8 2.Qxh8+ Kxh8 3.Rd4 Bc5 4.Rh4+ Kg8 5.Rg4 Kh8 6.Nxf8 Rxf8 0:00 1/6 6.18 102492 1.Bf5 Bc5 2.Ne6 Qe7 3.Rd3 Bxf2+ 4.Rxf2 0:01 1/7 7.01 260746 1.Bf5 Ba6 2.Ne6 Qe7 3.Nxf8 Rxf8 4.Be6+ Kg7 5.Qg4+ Kh8 6.Qxb4 Bxf1 7.Rxf1 0:05 1/7 10.58 945529 1.Rd3 Bd2 2.Bh7+ Qxh7 3.Rg3+ Kh8 4.Ng6+ Kg8 5.Nxf8+ Kxf8 6.Qxh7 Bxd5 7.Bxf6 0:09 1/8 13.99 1591604 1.Rd3 Bd2 2.Bh7+ Qxh7 3.Rg3+ Kh8 4.Ng6+ Kg8 5.Nxf8+ Kxf8 6.Qxh7 Bxd5 7.Qh8+ Ke7 8.Qxc8 Bxa2 9.Rg7+ Bf7 0:24 1/9 18.21 4406117 1.Rd3 Rc3 2.Bxc3 Re8 3.Rg3 Re7 4.Bh7+ Kf8 5.Rxg7 Rxg7 6.Ne6+ Ke7 7.Nxg7 0:50 1/10 22.27 9161386 1.Rd3 Bxd5 2.Qxd5+ Rf7 3.Bxf7+ Qxf7 4.Rg3+ Kf8 5.Ng6+ Ke8 6.Re3+ Kd7 7.Qxf7+ Kc6 8.Ne7+ Kb5 9.Nxc8 2:22 1/11 Mate11 28410363 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 4.Bxf7+ Rxf7 5.Nxf6+ Rxf6 6.Bxf6 Qxg3 7.Qe8+ Kh7 8.hxg3 Kh6 9.Qf7 Bc5 10.Qg7+ Kh5 11.Qg5# 3:08 1/12 Mate11 39239807 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 4.Bxf7+ Rxf7 5.Nxf6+ Rxf6 6.Bxf6 Qxg3 7.Qe8+ Kh7 8.hxg3 Kh6 9.Qf7 Bc5 10.Qg7+ Kh5 11.Qg5# 6:39 1/13 Mate10 88409401 1.Rd3 Bxd5 2.Rg3 Rf7 3.Nxd5 Rcc7 4.Bxf7+ Rxf7 5.Bxf6 Kf8 6.Bxg7+ Ke8 7.Rf3 Kd8 8.Rxf7 Ke8 9.Rxa7+ Kd8 10.Qh8# Steve
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