Author: John Merlino
Date: 16:32:41 08/22/02
Go up one level in this thread
On August 22, 2002 at 18:30:10, Sune Larsson wrote: > > [D]8/2p5/p3r1k1/1pp3p1/6P1/1P3P2/P1PR1K2/8 b - - 0 12 > > This is from the game Junior 7-Yace. Here black played 12.-Rd6?? > and lost the pawn ending. The same theme - black gets occupado > on the k-side and the white king eats the q-side. > > Test: Avoid 12.-Rd6?? The pawn ending is lost. To avoid Rd6, Chessmaster 9000 on a PIII-600 needs 49 seconds: Time Depth Score Positions Moves 0:00 1/3 0.05 683 12...c6 13.c4 a5 14.Rd7 0:00 1/3 0.03 1772 12...Rd6 13.Re2 Kf6 14.c4 0:00 1/4 0.01 3060 12...Rd6 13.Re2 b4 14.Re7 0:00 1/5 0.05 5921 12...Rd6 13.Re2 Kf6 14.c4 b4 0:00 1/6 0.03 16696 12...Rd6 13.Re2 Kf6 14.Kg3 Rd4 15.Re4 b4 0:01 2/7 0.06 57069 12...Rd6 13.Re2 Kf6 14.Kg3 Rd4 15.c3 Rd3 16.c4 0:01 3/8 0.05 98599 12...Rd6 13.Re2 Kf6 14.Kg3 Rd1 15.Re8 Rg1+ 16.Kf2 Rd1 17.Ke3 0:02 4/9 0.05 167280 12...Rd6 13.Re2 Kf6 14.Kg3 Rd1 15.Re8 Rg1+ 16.Kf2 Rc1 17.Rf8+ Ke6 0:04 5/10 0.03 339878 12...Rd6 13.Re2 Kf6 14.Kg3 Rd1 15.a4 Rg1+ 16.Kf2 Rd1 17.Ke3 Rd4 0:09 6/11 0.16 858724 12...Rd6 13.Rxd6+ cxd6 14.Ke3 Kf6 15.f4 gxf4+ 16.Kxf4 d5 17.c3 a5 18.g5+ Kg6 19.Ke5 d4 20.cxd4 cxd4 21.Kxd4 Kxg5 0:19 7/12 0.45 1825533 12...Rd6 13.Rxd6+ cxd6 14.Ke3 Kf6 15.Ke4 Ke6 16.c4 b4 17.f4 gxf4 18.Kxf4 Kf6 19.g5+ Kg6 20.Kg4 a5 21.Kf4 0:49 7/12 0.35 4637473 12...c4 13.bxc4 b4 14.Rd5 Rc6 15.c5 Rf6 16.Ke3 a5 17.Rd7 c6 18.Rc7 a4 1:39 8/13 0.37 9384781 12...c4 13.bxc4 Rc6 14.Rd4 b4 15.Ke3 a5 16.f4 gxf4+ 17.Kxf4 Rc5 18.Ke4 Kg5 19.Kd3 Re5 jm
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