Author: John Merlino
Date: 11:02:18 09/25/03
Go up one level in this thread
On September 25, 2003 at 12:08:17, Will Singleton wrote: >[D]6k1/8/p3p2p/2Q5/1N2qp2/8/5K2/8 b - - 0 47 > >Black has the option of Qe3+, going into a 3 pawns vs knight game. It appears >from analysis that after the queens are off, white cannot stop all the pawns. I >don't know whether it's possible to win without trading queens (doesn't look >like it), but it appears certain that Qe3+ will win. However, programs are >reluctant to play it. Even after forcing 1...Qe3+ 2.Qxe3 fxe3+ 3.Kxe3 a5, Chessmaster 9000, on a P4-2.4, does not see a win for Black after four minutes (this is, of course, without tablebases): Time Depth Score Positions Moves 0:00 1/3 0.00 395 50.Nc2 a4 51.Kd4 0:00 1/4 0.00 744 50.Nc2 a4 51.Kd4 a3 52.Nxa3 0:00 1/5 -0.04 1489 50.Nc2 a4 51.Kd4 h5 52.Ke5 h4 53.Kxe6 0:00 2/6 0.00 3060 50.Nc2 a4 51.Kf4 h5 52.Kg5 a3 53.Nxa3 0:00 3/7 -0.20 7370 50.Nc2 a4 51.Kf4 Kf7 52.Ke5 h5 53.Ke4 h4 0:00 4/8 -0.10 17614 50.Nc2 a4 51.Na3 Kg7 52.Kd4 h5 53.Nc4 h4 0:00 4/8 -0.06 24163 50.Nc6 a4 51.Kd4 h5 52.Kc3 h4 53.Kb4 h3 54.Kxa4 0:00 5/9 -0.27 37136 50.Nc6 a4 51.Kd4 h5 52.Kc3 h4 53.Kb4 h3 54.Kxa4 h2 0:00 6/10 -0.37 77869 50.Nc6 a4 51.Nb4 Kf7 52.Nc2 h5 53.Kf4 Kf6 54.Ke4 h4 0:00 6/10 -0.26 91891 50.Nc2 a4 51.Kf4 Kf7 52.Kg4 Kg6 53.Kf4 h5 54.Ke4 h4 0:00 7/11 -0.43 158681 50.Nc2 a4 51.Kf4 Kf7 52.Na3 Kf6 53.Kg4 e5 54.Kf3 Kf5 55.Ke3 h5 0:00 7/11 -0.27 227087 50.Nd3 a4 51.Kd4 h5 52.Kc3 h4 53.Kb4 h3 54.Kxa4 h2 55.Nf2 Kf7 56.Kb5 0:00 8/12 0.00 352836 50.Nd3 a4 51.Kd4 h5 52.Kc3 h4 53.Nf2 h3 54.Nxh3 Kf7 55.Kb4 a3 0:01 9/13 0.00 568989 50.Nd3 a4 51.Kd4 h5 52.Kc3 h4 53.Nf2 h3 54.Nxh3 Kf7 55.Kb4 a3 56.Kxa3 0:02 10/14 0.00 971430 50.Nd3 a4 51.Kd4 h5 52.Kc3 h4 53.Nf2 h3 54.Nxh3 Kf7 55.Kb4 a3 56.Kxa3 Kf6 0:05 11/15 -0.08 2273479 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 Kf6 53.Kb4 e5 54.Kxa4 e4 55.Kb4 exd3 56.Kc3 Kg7 57.Kxd3 Kf7 0:09 12/16 -0.06 4490795 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 Kf6 53.Kb4 e5 54.Kxa4 e4 55.Nf2 Kf5 56.Kb4 e3 57.Nd3 e2 58.Kc3 0:15 13/17 -0.08 7305134 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 Kf6 53.Kb4 e5 54.Kxa4 e4 55.Kb3 exd3 56.Kc3 Kg7 57.Kxd3 Kf7 0:22 14/18 -0.08 11125174 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 Kf6 53.Kb4 e5 54.Kxa4 e4 55.Kb3 exd3 56.Kc3 Kg7 57.Kxd3 Kg6 0:38 15/19 -0.08 18933211 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 Kf6 53.Kb4 e5 54.Kxa4 e4 55.Kb3 exd3 56.Kc3 Kg7 57.Kxd3 Kg6 1:25 16/20 -0.09 43186414 50.Nd3 Kf7 51.Nc5 Kf6 52.Kf4 e5+ 53.Ke4 h5 54.Nd7+ Kg5 55.Nxe5 a4 56.Kd4 Kf4 57.Ng6+ Kf5 58.Nh4+ Kg4 59.Ng2 a3 60.Kc3 a2 61.Kb2 Kf3 62.Nh4+ Kg3 63.Nf5+ Kg4 2:39 17/21 -0.12 82511196 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 h5 53.Kb4 h4 54.Nf2 Kf6 55.Kxa4 Ke5 56.Kb4 Kd4 57.Kb3 Ke3 58.Nh3 Kf3 59.Kc2 Kg3 60.Ng5 3:45 18/22 -0.08 110963169 50.Nd3 a4 51.Kd4 Kf7 52.Kc3 h5 53.Kb4 h4 54.Nf2 Kf6 55.Kxa4 Ke5 56.Kb3 Kf4 57.Kc2 Kg3 58.Ne4+ Kg2 59.Ng5 h3 60.Nxh3 Kxh3 61.Kd3 Kg3 62.Ke4 Kf2 jm
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