Author: Robert Hyatt
Date: 13:00:20 11/25/02
Go up one level in this thread
On November 25, 2002 at 15:10:42, John Merlino wrote: >On November 25, 2002 at 12:56:59, Joachim Rang wrote: > >>On November 24, 2002 at 23:56:30, Terry McCracken wrote: >> >>>[D]8/4p3/4Q3/8/8/k1p3PP/1q3P1K/8 w - - 0 1 >>> >>>This is reposted as it was given little attention. >>> >>> >>>http://www.talkchess.com/forums/1/message.html?266990 >> >>yep, Terry is right! You can easily try it for yourself, by let the engines play >>against themselves. Althoug many engines show a drawish score in the beginning, >>they realize after a few moves, that white is going to loose. But you have at >>least give the engines 1 minute per move: >> >>Here are a few winning lines: >> >>New game >>Shootout (Ruffian1) >> >>1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Kg2 c2 4.Qe4 Qb5 5.Kh2 Kb2 6.Qd4+ Ka2 7.Qa7+ Kb1 8.Qh7 >>Qd5 9.Kg1 Kb2 10.Qh8+ Ka2 11.Qh6 Qd1+ 12.Kg2 c1Q+- 0-1 >> >>New game >>Shootout (ChessTiger14) >> >>1.Qxe7+ Ka2 2.Qe6+ Qb3 3.Qa6+ [3.Qe2+ c2 4.f4 Kb2 5.g4 Qd5 6.Qf2 Kc3 7.Qe3+ Qd3 >>8.Qc5+ Kd2 9.Qb4+ Ke3 10.Qc5+ Kxf4 11.Qf2+ Ke4 12.Qf5+ Ke3 13.Qc5+ Kd2 14.Qb4+ >>Ke2 15.Qe7+ Qe3 16.Qxe3+ Kxe3+-] 3...Kb2 4.Qf6 Kb1 5.Qf5+ c2 6.Qe4 Ka2 7.Qc6 Kb2 >>8.Qf6+ Qc3 9.Qb6+ Kc1 10.Qe6 Kd2 11.Qd5+ Qd3 12.Qa5+ Ke2 13.Qc5 Qd1 14.Qe3+ Kf1 >>15.Qe4 c1Q+- 0-1 >> >>New game >>Shootout (Shredder62, Blitz:10') >> >>1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qe1+ Ka2 4.Qe6+ Kb1 5.Qe4+ c2 6.f4 Qc3 7.f5 Kc1 8.f6 >>Qxf6 9.h4 Qf2+ 10.Kh3 Kd2 11.Qd5+ Ke1 12.Qe4+ Qe2 13.Qc6 Qf1+ 14.Kg4 Qd3 15.Kh3 >>Qf5+ 16.Kh2 Ke2 17.Qe8+ Kf1 18.Qc6 Qf2+ 19.Kh3 Kg1 20.Kg4 Qe2+ 21.Kf5 Qf1+ >>22.Kg6 c1Q 0-1 > >Here's how CM9000, on a P3-733, plays it out (both sides with no ponder, 2 >minutes per move): > >1.Qxe7+ Ka2 2.Qe6+ Kb1 3.Qe1+ Qc1 4.Qe4+ c2 5.h4 Qb2 6.g4 Qc3 7.g5 Kb2 >8.Qb7+ Qb3 9.Qg7+ Ka2 10.Qa7+ Kb1 11.Qh7 Qf3 12.Qg6 Qxf2+ 13.Kh3 Qd4 >14.Qh7 Kb2 15.Qb7+ Kc3 16.Qc7+ Kd2 17.Qh2+ Kd3 18.Qc7 Qc3 19.Qxc3+ Kxc3 >20.Kg4 c1=Q 21.Kh5 Kd4 22.Kg6 Ke5 23.Kh6 Ke6 24.Kg7 Qf4 25.h5 Qxg5+ >26.Kf8 Qg4 27.h6 Qg6 28.h7 Qf7# 0-1 Why not 4, Qe2 rather than Qe4+? And this is why I'm not a particular fan of letting a computer play such a position out and then draw any conclusions about the position. Who knows whether either of those moves at move 4 are the right move for white? And if they aren't, then the entire analysis is flawed...
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