Author: John Merlino
Date: 09:48:46 12/20/02
Go up one level in this thread
On December 19, 2002 at 19:39:56, Roy Eassa wrote: >White to move & win >[d] 7k/5r2/6PK/6P1/8/8/5P1R/8 w - - 0 1 > >7k/5r2/6PK/6P1/8/8/5P1R/8 w - - 0 1 > >1.g7+! > > [1.Kh5 Rf4 only draws] > >1...Kg8 > > [1...Rxg7 2.Rh5 Kg8 > (2...Rf7 3.Kg6+ Kg8 4.Rh8+ +-) > 3.g6 Rd7 4.Ra5 +-] > >2.Rh3! Rf3 3.Rg3! Rxf2 > > [3...Rf4 4.Re3 Rh4+ 5.Kg6 Re4 6.Kf5 Rc4 7.Re7 +-] > >4.Ra3 Rh2+ 5.Kg6 Ra2 6.Rf3 Ra6+ 7.Rf6 Rb6 8.Kh6! Rb8 9.Rf8+ +- > > [9.g6 also works] CM9000, on a P3-733, finds g7+ in one second, but loses it to Kh5 up until nine seconds, after which it finds and sticks with g7+: Time Depth Score Positions Moves 0:01 5/9 2.23 83234 1.g7+ Kg8 2.Rh3 Rd7 3.f4 Rd6+ 4.Kh5 Kxg7 5.f5 Rd7 6.Rg3 0:01 5/9 2.38 92511 1.Kh5 Rf4 2.f3 Kg7 3.Rf2 Rf8 4.f4 Rh8+ 5.Kg4 Kxg6 6.f5+ Kf7 0:01 6/10 2.30 103302 1.Kh5 Rf4 2.f3 Kg7 3.Rf2 Rf8 4.f4 Rh8+ 5.Kg4 Kxg6 6.f5+ Kf7 7.Rf3 Rh7 0:01 7/11 2.35 137575 1.Kh5 Rf4 2.f3 Kg7 3.Rf2 Rf8 4.f4 Rh8+ 5.Kg4 Kxg6 6.f5+ Kf7 7.Rf3 Rh2 0:02 8/12 2.31 209287 1.Kh5 Rf4 2.f3 Kg7 3.Rf2 Rf8 4.f4 Rh8+ 5.Kg4 Kxg6 6.f5+ Kf7 7.Rf4 Rh2 8.g6+ Kg7 9.Kg5 0:04 9/13 1.79 510589 1.Kh5 Rf4 2.f3 Kg7 3.Rf2 Kg8 4.Rf1 Kg7 5.Re1 Rxf3 6.Re7+ Kg8 7.Rf7 Rh3+ 8.Kg4 0:09 9/13 2.41 1047755 1.g7+ Kg8 2.Rh3 Rd7 3.f4 Rd6+ 4.Kh5 Kxg7 5.Rc3 Rd5 6.Rc7+ Kf8 7.Rb7 Rc5 8.Rd7 Rf5 9.Rd8+ Kg7 0:16 10/14 2.61 1921583 1.g7+ Kg8 2.Rh3 Rd7 3.f4 Rd6+ 4.Kh5 Kxg7 5.Rc3 Rd5 6.Rc7+ Kg8 7.Kh6 Rd8 8.f5 Re8 9.Kg6 0:33 11/15 2.77 4040051 1.g7+ Kg8 2.Rh3 Rd7 3.Rf3 Rxg7 4.g6 Rd7 5.Rc3 Rd8 6.f4 Kf8 7.f5 Ke7 8.Rg3 Kf6 0:54 12/16 2.90 6812895 1.g7+ Kg8 2.Rh3 Rd7 3.Rf3 Rxg7 4.g6 Rc7 5.Rd3 Rc8 6.f4 Kf8 7.f5 Rc2 8.Rd8+ Ke7 9.Ra8 Rf2 10.Ra7+ Ke8 1:29 13/17 3.05 11605430 1.g7+ Kg8 2.Rh3 Rd7 3.Rf3 Rxg7 4.g6 Rc7 5.Rb3 Rc8 6.f4 Rd8 7.f5 Kf8 8.f6 Kg8 9.Rf3 Kf8 10.g7+ Kf7 2:34 14/18 3.12 20784755 1.g7+ Kg8 2.Rh3 Rd7 3.Rf3 Rxg7 4.g6 Rd7 5.Rc3 Rd8 6.f4 Re8 7.f5 Rd8 8.f6 Kf8 9.Rg3 Rd7 10.Rg4 jm
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