Author: John Merlino
Date: 20:28:18 11/06/05
Go up one level in this thread
On November 06, 2005 at 21:18:21, Djordje Vidanovic wrote: >If you take a look at this position you can see that Fritz 9 needs a decent >chunk of time to find the simple Rg3! It spends a lot of time on the simple pawn >to g4 and only after about 80 seconds (FX-53) switches to Rg3, eventually >announcing a mate in 23: > >[D] r6r/p2Q2pp/6k1/2P1pp2/1Pb5/R7/6PP/6K1 w - - 0 29 It looks like lots of different moves win here, but CM9_R1 on a P4-2.4 finally settles on Rg3 after seventeen seconds: Time Depth Score Positions Moves 0:00 1/5 4.36 50127 29.g4 Rhf8 30.gxf5+ Kf6 31.Qd6+ Kf7 32.Rc3 Ba2 33.Qxe5 0:00 1/6 3.70 127327 29.g4 Rhf8 30.gxf5+ Kf6 31.Qd6+ Kf7 32.Rc3 Ba2 33.Qxe5 Rad8 0:01 1/6 3.75 194706 29.Rg3+ Kf6 30.Qxg7+ Ke6 31.Qh6+ Kd5 32.Qd6+ Ke4 33.Qc6+ Kd4 34.Qd7+ Ke4 35.Rc3 Bd5 36.c6 0:01 1/6 4.56 251131 29.Rc3 Rad8 30.Qc6+ Kg5 31.Rxc4 Rd1+ 32.Kf2 e4 33.Qe6 Rd2+ 34.Kf1 0:01 1/7 4.55 298759 29.Rc3 Rad8 30.Qc6+ Kg5 31.Rxc4 Rd1+ 32.Kf2 Rd2+ 33.Ke3 Rhd8 34.h4+ Kh5 35.Qf3+ Kg6 0:04 1/8 4.81 897936 29.Rc3 Rad8 30.Qc6+ Kf7 31.Qb7+ Ke6 32.Rxc4 Rd7 33.Qc6+ Ke7 34.Qf3 Rf8 0:05 1/8 5.33 1252992 29.Rg3+ Kf6 30.Qxg7+ Ke6 31.Qh6+ Kd5 32.Qd2+ Kc6 33.Qd6+ Kb5 34.Ra3 Be2 35.Qa6+ Kxb4 36.Qa5+ Kc4 37.c6 Rae8 38.Rc3+ Kd4 39.Qc5+ Ke4 40.Qe3+ Kd5 41.Qxe2 0:07 1/8 5.67 1639563 29.g4 Rhf8 30.gxf5+ Kf6 31.Qc6+ Kxf5 32.Qf3+ Kg5 33.h4+ Kxh4 34.Qe4+ Kg5 35.Qxe5+ Kh4 36.Qe4+ Kg5 37.Qxc4 0:12 1/9 5.69 2822144 29.g4 Rhf8 30.gxf5+ Kf6 31.Qc6+ Kxf5 32.Re3 Ba2 33.Qe4+ Ke6 34.Ra3 Bb3 35.Qc6+ Kf5 36.Rxb3 0:17 1/9 5.87 4090302 29.Rg3+ Kf6 30.Qxg7+ Ke6 31.Qh6+ Kd5 32.Qd2+ Kc6 33.Qd6+ Kb5 34.c6 Ka4 35.Qc5 a5 36.Qxc4 axb4 37.Qc2+ Kb5 38.Qxf5 Kxc6 39.Qxe5 0:38 1/10 7.17 9261758 29.Rg3+ Kf6 30.Qxg7+ Ke6 31.Qh6+ Kd5 32.Qd2+ Kc6 33.Qd6+ Kb5 34.Ra3 Kxb4 35.c6+ Kb5 36.Qxe5+ Kb6 37.Qd4+ Kc7 38.Qf4+ Kb6 39.Qxc4 a5 40.c7 1:15 1/11 7.79 18860733 29.Rg3+ Kf6 30.Qxg7+ Ke6 31.Qh6+ Kd5 32.Qd2+ Kc6 33.Qd6+ Kb5 34.Ra3 Kxb4 35.c6+ Kb5 36.Qxe5+ Kb6 37.Qd4+ Kc7 38.Qf4+ Kxc6 39.Qxc4+ Kd6 40.Ra6+ Ke7 41.Qe6+ Kf8 42.Qxf5+ Kg8 And Rg3 appears to be a Mate in 16, after a bit of poking around.... jm
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