Author: Mike S.
Date: 21:54:17 12/10/02
The King - Nimzo [B99] 12th World Microcomputer Chess Champion, 1993 [D]r7/8/4p2k/5bR1/3p3r/Np6/1P6/K5R1 w - - 0 59 59.Rh5+ Kxh5 60.Rg5+ Kh6 ½-½ This stalemate idea saved Nimzo 3rd place in the Micro WM, Munich 1993. http://www.mark-weeks.com/chess/93wm$tix.htm Drawish eval required! P3/700 MHz, 64 MB hash: Analysis by List 504: 59.R5g3 d3 60.Rd1 Rh2 61.Rdxd3 -+ (-4.30) Depth: 5 00:00:00 3kN (...) 59.R5g2 e5 60.Rf2 Rh5 61.Rgf1 Kg6 62.Rf3 d3 63.Rg3+ Rg5 64.Rxf5 Rxg3 -+ (-4.75) Depth: 11 00:00:04 1525kN 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rxh5 d3 64.Rh2 Kf7 65.Rf2 Ke7 66.Kb1 -+ (-4.53) Depth: 11 00:00:04 1540kN 59.Rh5+ Kxh5 60.Rg5+ Kh6 61.Rg6+ Kh7 62.Rg7+ Kh8 63.Rh7+ Kg8 64.Rxh4 d3 65.Rd4 e5 66.Rd5 Re8 67.Nc4 -+ (-4.33) Depth: 12 00:00:05 1699kN 59.Rh5+! -+ (-3.93) Depth: 13 00:00:06 1977kN 59.Rh5+ Kxh5 60.Rg5+ Kh6 61.Rg6+ Kh7 62.Rg7+ Kh8 63.Rh7+ Kg8 64.Rg7+ Kf8 65.Rf7+ Ke8 66.Re7+ Kd8 67.Rd7+ Kc8 68.Rc7+ Kb8 69.Rb7+ Kxb7 = (0.15) Depth: 13 00:00:06 1983kN 59.Rh5+ Kxh5 60.Rg5+ Kh6 61.Rg6+ Kh7 62.Rg7+ Kh8 63.Rh7+ Kg8 64.Rg7+ Kf8 65.Rf7+ Ke8 66.Re7+ Kd8 67.Rd7+ Kc8 68.Rc7+ Kb8 69.Rb7+ Kxb7 = (0.15) Depth: 14 00:00:06 2024kN Analysis by Chess Tiger 14.0: 59.R5g2 e5 60.Rg5 Rh1 61.Rxh1+ Kxg5 62.Rd1 -+ (-3.66) Depth: 8 00:00:00 99kN (...) 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rxh5 d3 64.Rh2 e5 65.Rh5 d2 66.Rg5+ Kh7 67.Rg1 e4 68.Rd1 -+ (-4.24) Depth: 14 00:00:08 1931kN 59.Rh5+ -+ (-3.34) Depth: 15 00:00:10 2416kN 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rg7+ Kf8 64.Rf7+ Ke8 65.Re7+ Kd8 66.Rd7+ Kc8 67.Rc7+ ³ (-0.36) Depth: 15 00:00:10 2426kN 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rg7+ Kf8 64.Rf7+ Ke8 65.Re7+ Kd8 66.Rd7+ Kc8 67.Rc7+ ³ (-0.36) Depth: 16 00:00:10 2443kN Tiger is "not so sure..." (-0.36), but "chases" the black king correctly, in the pv. Analysis by Goliath Light 1.5: 59.Rg7 e5 60.Rf7 -+ (-4.20) Depth: 6/10 00:00:00 (...) 59.R5g3 Bc2 60.Rf3 e5 61.Rf6+ Kh5 62.Re6 Re4 63.Reg6 -+ (-4.29) Depth: 9/27 00:00:01 459kN 59.Rh5+ = (0.00) Depth: 9/27 00:00:01 740kN 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rg7+ Kf8 64.Rg8+ Kf7 65.Rg7+ Kf6 66.Rg6+ Bxg6 = (0.00) Depth: 9/27 00:00:01 748kN 59.Rh5+ Rxh5 60.Rg6+ Kh7 61.Rg7+ Kh8 62.Rh7+ Kg8 63.Rg7+ Kf8 64.Rg8+ Kf7 65.Rg7+ Kf6 66.Rg6+ Bxg6 1 second! Goliath Light has a special talent for perpetuals (the engine Patzer too as I'm being told). Regards, M.Scheidl
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