Author: John Merlino
Date: 13:44:42 05/28/04
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On May 28, 2004 at 15:25:47, Charlie GOLD wrote: > > Go to Chesscafe.com -End Game Study, number 383. How long does your computer >take to solve the win for white? Here's the diagram (note that Rob Basham's diagram is missing the critical White Pawn on a4): [D]7R/7p/1K3pp1/3p1k1N/P7/8/3pP3/8 w - - 0 1 CM_SKR finds the solution in 0:02 on an AMD 2500: Time Depth Score Positions Moves 0:00 1/3 -0.80 3563 1.e4+ Kxe4 2.Nxf6+ Kf3 3.a5 d1=Q 4.Nxh7 0:00 1/3 -0.63 6689 1.Ng3+ Ke6 2.Re8+ Kd7 3.Rd8+ Kxd8 0:00 1/4 -3.09 9626 1.Ng3+ Kf4 2.Nf1 d1=Q 3.e3+ Ke5 4.Re8+ Kd6 0:00 1/4 -0.80 10894 1.e4+ Kxe4 2.Nxf6+ Kf3 3.a5 d1=Q 4.Nxh7 0:00 1/5 -0.58 20240 1.e4+ Kxe4 2.Nxf6+ Kf3 3.Rxh7 d1=Q 4.Rh3+ Kf4 5.a5 0:00 1/6 -1.23 39603 1.e4+ Kxe4 2.Nxf6+ Kf3 3.Nxh7 d1=Q 4.Rf8+ Kg3 5.a5 Qd4+ 6.Kb5 0:00 1/7 -1.59 73144 1.e4+ Kxe4 2.Nxf6+ Kf3 3.Nxh7 d1=Q 4.Rf8+ Ke3 5.a5 Qd4+ 6.Kb5 Qc4+ 7.Kb6 0:00 1/8 -1.78 168411 1.e4+ Kxe4 2.Nxf6+ Kf3 3.Nxh7 d1=Q 4.Rf8+ Ke3 5.a5 Qd4+ 6.Kb5 Qc4+ 7.Kb6 Qb4+ 8.Ka6 0:01 2/9 -2.01 414344 1.e4+ Kxe4 2.Nxf6+ Kf3 3.Rxh7 d1=Q 4.Rh3+ Ke2 5.Rh2+ Kd3 6.Rh4 Qb1+ 7.Ka6 d4 8.Ne4 0:02 2/9 -0.37 559873 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Ke5 4.exd5 gxh5 5.a5 h4 6.a6 h3 7.a7 h2 8.a8=Q h1=Q 0:02 3/10 -0.34 653372 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Ke5 4.exd5 gxh5 5.a5 h4 6.a6 h3 7.a7 h2 8.a8=Q h1=Q 9.Kc5 0:03 4/11 0.73 1066902 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Qxe4 4.Ng3+ Kf4 5.Nxe4 f5 6.Kc5 h5 7.a5 h4 8.a6 0:05 5/12 0.57 1671633 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Qxe4 4.Ng3+ Kf4 5.Nxe4 f5 6.Nf2 Kg3 7.a5 h5 8.a6 0:10 6/13 0.82 3142380 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Qxe4 4.Ng3+ Kf4 5.Nxe4 f5 6.Nf2 Kg3 7.a5 g5 8.a6 Kg2 9.Ne4 0:26 7/14 0.98 8010993 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Qxe4 4.Ng3+ Kf4 5.Nxe4 f5 6.Nf6 h6 7.a5 Kg3 8.Nh5+ Kf3 9.a6 g5 1:53 8/15 1.51 34505400 1.Rd8 d1=Q 2.Rxd5+ Qxd5 3.e4+ Qxe4 4.Ng3+ Kf4 5.Nxe4 f5 6.Nf6 Kf3 7.Nxh7 f4 8.Ng5+ Kg2 9.Ne6 f3 10.Nf4+ Kg1 11.Nxg6 jm
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