Author: Vincent Diepeveen
Date: 07:05:35 03/15/02
Go up one level in this thread
On March 15, 2002 at 08:20:47, Bradley Woodward wrote: >On March 15, 2002 at 06:56:15, Ed Schröder wrote: > >>The yearly Aufsess tournament in Germany has started again, when replaying >>Rebel's game against Fritz in round-2 I came accross the below position: >> >>[d]8/8/6R1/1nB1K3/k7/7p/1P4bP/8 w - - 0 1 >> >>White has a clear win but has troubles to give black the final knock, then the >>surprising 64.Rxg2! follows, game over. How long do other programs need? Rebel >>needs 2:15, that can be much shorter, or? > >G'day Ed. > >On my P4 1.7Ghz, Crafty finds it at ply 15, with a 96MB hash. > > 15 2:07 ++ 1. Rxg2!! > 15 2:12 7.60 1. Rxg2 hxg2 2. h4 Kb3 3. h5 Kc4 4. > Bg1 Kd3 5. h6 Ke2 6. h7 Kf1 7. Bb6 > g1=Q 8. Bxg1 Nc7 9. h8=Q Kxg1 > > >Diep found it at 1 minute, 21 seconds, but then changed its mind. The full >analysis it gave is > >01:21 0 0 8935046 (0) 13 5.675 Rg6xg2 h3xg2 h2-h4 Nb5-c7 h4-h5 Nc7-a6 Bc5-g1 >Na6-b8 Ke5-e6 Ka4-b3 h5-h6 Nb8-c6 h6-h7 Nc6-d8 Ke6-f6 >01:29 0 0 9839713 (0) 14 5.675 Rg6xg2 h3xg2 h2-h4 Nb5-c7 h4-h5 Nc7-a6 Bc5-g1 >Na6-b8 Ke5-e6 Ka4-b3 h5-h6 Nb8-c6 h6-h7 Nc6-d8 Ke6-f6 >++ g6-g4 >01:46 0 0 11778342 (0) 14 5.892 Rg6-g4 Ka4-a5 Rg4xg2 h3xg2 h2-h4 Nb5-c7 h4-h5 >Ka5-b5 Bc5-g1 Kb5-c6 h5-h6 Nc7-d5 h6-h7 Nd5-e7 Ke5-f6 Ne7-d5 Kf6-g6 Note that Rxg2 is still in the mainline :) >02:48 0 0 18566778 (0) 15 5.892 Rg6-g4 Ka4-a5 Rg4xg2 h3xg2 h2-h4 Nb5-c7 h4-h5 >Ka5-b5 Bc5-g1 Kb5-c6 h5-h6 Nc7-d5 h6-h7 Nd5-e7 Ke5-f6 >++ g6-g2 >03:43 0 0 24567094 (0) 15 9.124 Rg6xg2 h3xg2 h2-h4 Ka4-b3 h4-h5 Kb3-c4 Bc5-g1 >Kc4-d3 h5-h6 Kd3-e2 h6-h7 Ke2-f1 Bg1-c5 g2-g1Q Bc5xg1
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