Author: Roy Eassa
Date: 12:05:55 07/31/01
Go up one level in this thread
On July 31, 2001 at 14:57:05, Roy Eassa wrote: >On July 31, 2001 at 14:43:17, Mike S. wrote: > >[snip] > >>But the best move during that series of games came from Crafty 18.10: >> >>[D] 5k2/6p1/2p2p2/P7/1Q6/2P1pqPP/7K/8 b - - 0 67 >> >>After 67.Qb4+, Crafty played 67...c5!! This ist a Master's move, the spirit of >>Capablanca comes alive! >> >>Try to figure out the idea behind the pawn sacrifice (it took me some time). Ok, >>the position may have been won already, and maybe (?) black can win without this >>sac too. But this is not my issue here. I want to be entertained, and by >>watching that move, I surely was! > > >Tiger 14 on an Athlon 1.2 GHz: > >00:00:00.3 0.38 8 160018 Ke8 Qb8+ Kd7 Qb7+ Ke6 Qc8+ Kd5 Qg8+ Kc5 Qxg7 e2 Qa7+ >Kb5 > >00:00:00.8 0.58 8 209074 Ke8 Qb8+ Kd7 Qb7+ Ke6 Qc8+ Kf7 Qd7+ Kg6 Qe8+ Kh7 g4 >Qf2+ Kh1 > >00:00:01.3 0.50 9 489331 Ke8 Qb8+ Kd7 Qb7+ Ke6 Qb3+ Kf5 Qc2+ Ke5 Qg2 Qd1 a6 e2 >a7 e1Q a8Q > >00:00:04.0 1.48 9 1606478 c5 > >00:00:04.4 7.77 9 1824972 c5 Qxc5+ Kf7 Qc4+ Kg6 Qd3+ f5 Qd6+ Kh7 Qc5 Qf2+ Kh1 >Qf1+ Kh2 e2 a6 > >00:00:04.1 7.77 10 1830847 c5 Qxc5+ > >00:00:06.8 7.83 11 2448330 c5 Qxc5+ Kf7 a6 e2 Qa7+ Kg6 Qg1 Qf1 Qd4 e1Q Qg4+ Kf7 >Qd7+ Qe7 Qd5+ Kg6 > >00:00:13.5 8.28 12 5070054 c5 Qxc5+ Kf7 Qc8 e2 Qd7+ Kg6 Qe8+ Kh7 h4 Qf2+ Kh3 e1Q >Qh5+ Kg8 Qd5+ Kf8 Qd6+ > >00:00:19.7 8.28 13 7620286 c5 Qxc5+ Kf7 Qc8 e2 Qd7+ Kg6 Qe8+ Kh7 h4 Qf2+ Kh3 e1Q >Qh5+ Kg8 Qd5+ Kf8 Qd8+ > >00:00:42.5 8.54 14 16345155 c5 Qxc5+ Kf7 Qc8 e2 Qd7+ Kg6 Qe8+ Kh7 h4 Qf2+ Kh3 >e1Q Qh5+ Kg8 Qd5+ Kf8 Qd8+ Fritz 6 on Athlon 1.2 GHz sees the correct move in under a second, but is MUCH slower than Tiger in coming up with an evaluation of over +2 for black (over a minute to improve on the following): 67...Ke8 68.Qb8+ Kf7 69.Qd6 ³ (-0.31) Depth: 1/4 00:00:00 = (-0.16) Depth: 3/8 00:00:00 67...Kf7 68.Qb3+ Ke7 69.Qb7+ Ke6 70.Qxg7 Qe2+ 71.Kh1 Qd1+ 72.Kh2 = (-0.19) Depth: 3/11 00:00:00 = (-0.13) Depth: 7/19 00:00:00 25kN 67...Kg8 68.Qb3+ Kh8 69.Qb8+ Kh7 = (-0.16) Depth: 7/19 00:00:00 35kN = (-0.16) Depth: 10/26 00:00:00 362kN 67...Kf7! 68.Qb3+ Kg6 69.Qc2+ Kh6 70.Qg2 Qd1 71.a6 Qa1 72.Qe2 = (-0.19) Depth: 10/26 00:00:00 467kN ³ (-0.38) Depth: 10/29 00:00:00 647kN 67...c5! ³ (-0.41) Depth: 10/29 00:00:00 812kN -+ (-1.81) Depth: 13/33 00:00:04 4441kN
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