Author: Uri Blass
Date: 05:45:46 10/17/01
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On October 17, 2001 at 07:58:02, Vincent Diepeveen wrote: >On October 17, 2001 at 05:07:38, Ed Schröder wrote: > >>I ran this suite on an Athlon 1400 - 200 Mb using 1 minute maximum time. >>Rebel Century 4 solves about 90% within a few seconds and only misses WCSAC >>398. Here is Rebel's output in PGN, solution times are stored in the "Site" >>tag. > >>[Event "?"] >>[Site "RC4=NOK>1:00"] >>[Date "2001.10.17"] >>[Round "?"] >>[White "id "WCSAC.0398""] >>[Black "bm Qh5+"] >>[Result "*"] >>[WhiteElo "?"] >>[BlackElo "?"] >>[FEN "2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - - 0 1"] > >Mate in 10: > >00:00 0 0 108 (0) 1 0.468 Bb3xe6 Bd7xe6 f5xe6 Kf7xe6 >++ f5-e6 >00:00 0 0 141 (0) 1 1.828 f5xe6 Bd7xe6 >00:00 0 0 792 (0) 2 1.828 f5xe6 Bd7xe6 >00:00 0 0 3752 (0) 3 0.810 f5xe6 Bd7xe6 Qe2-h5 g7-g6 Bb3xe6 Qc8xe6 >++ e5-f6 >00:00 0 0 5587 (93) 3 2.163 e5xf6 Ng8xf6 f5xe6 Bd7xe6 >00:00 0 0 8011 (93) 4 2.163 e5xf6 Ng8xf6 f5xe6 Bd7xe6 >00:00 0 0 42795 (365) 5 0.921 e5xf6 Ng8xf6 f5xe6 Bd7xe6 Qe2-h5 Kf7-g8 Rf1xf6 Rd8 >xd6 >00:00 0 0 84767 (1837) 6 0.921 e5xf6 Ng8xf6 f5xe6 Bd7xe6 Qe2-h5 Kf7-g8 Rf1xf6 Rd >8xd6 >++ e2-h5 >00:03 0 0 299512 (7782) 6 MATE10 Qe2-h5 Nf6xh5 f5xe6 Kf7-g6 Bb3-c2 Kg6-g5 Rf1-f5 > Kg5-g6 Rf5-f6 Kg6-g5 Rf6-g6 Kg5-h4 Re1-e4 Nh5-f4 Re4xf4 Kh4-h5 g2-g3 Bd7xe6 Rf4 >-h4 >00:03 0 0 318148 (7782) 7 MATE10 Qe2-h5 Nf6xh5 f5xe6 Kf7-g6 Bb3-c2 Kg6-g5 Rf1-f5 > Kg5-g6 Rf5-f6 Kg6-g5 Rf6-g6 Kg5-h4 Re1-e4 Nh5-f4 Re4xf4 Kh4-h5 g2-g3 Bd7xe6 Rf4 >-h4 >00:04 0 0 408523 (8701) 8 MATE10 Qe2-h5 Nf6xh5 f5xe6 Kf7-g6 Bb3-c2 Kg6-g5 Rf1-f5 > Kg5-g6 Rf5-f6 Kg6-g5 Rf6-g6 Kg5-h4 Re1-e4 Nh5-f4 Re4xf4 Kh4-h5 g2-g3 Bd7xe6 Rf4 > >Perhaps you setup position wrong or have wrong side to move? >I mean mate in xx, how can rebel ever miss that? Maybe pruning when there is a big score Here is some analysis by deep Fritz(Deep Fritz has no problem to see the mate in 10 when it solves the fail high but I decided to use next best before it solved the fail high(I cannot use next best after it see a mate and it is a bug of the program) Deep Fritz found that Qh5+ is not the only winning move and exf6 can also win. It is possible that when rebel see a winning score(in this case winning score for 1.exf6) it simply prunes other moves and prefer to extend mainly the winning move to check that it has no error. New position [D]2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - - 0 1 Analysis by Deep Fritz: 1.exf6! µ (-1.03) Depth: 1/3 00:00:00 1.exf6! axb3 ³ (-0.69) Depth: 1/9 00:00:00 1.exf6! ± (1.00) Depth: 2/7 00:00:00 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 ± (0.81) Depth: 4/14 00:00:00 7kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 ± (0.81) Depth: 4/14 00:00:00 7kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 ± (0.81) Depth: 4/14 00:00:00 7kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 ± (0.81) Depth: 4/14 00:00:00 7kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Qxe6 4.Be5 ² (0.63) Depth: 5/19 00:00:00 15kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 axb3 ² (0.34) Depth: 6/21 00:00:00 39kN 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Rxe6 4.Be5 Kg8 5.Qf3 ² (0.53) Depth: 7/24 00:00:00 128kN 1.exf6-- = (0.22) Depth: 8/25 00:00:00 298kN 1.exf6-- = (0.22) Depth: 8/25 00:00:00 306kN 1.fxe6+! = (0.25) Depth: 8/25 00:00:00 388kN 1.fxe6+! Bxe6 2.Bxe6+ Qxe6 3.Bc5 b4 4.Qc2 bxc3 5.Rb1 Rd7 ² (0.41) Depth: 8/27 00:00:01 550kN 1.fxe6+ Bxe6 2.Bxe6+ Qxe6 3.Bc5 b4 4.Qd1 Qxa2 5.exf6 Rxe1 6.Qxe1 b3 ² (0.50) Depth: 9/29 00:00:02 1441kN 1.fxe6+ Bxe6 2.Bxe6+ Rxe6 3.Bc5 Rde8 4.Qf2 Qd8 5.a3 Kg6 6.exf6 Rxe1 ² (0.50) Depth: 10/30 00:00:05 3306kN 1.fxe6+ Bxe6 2.Bxe6+ Rxe6 3.Bc5 Rde8 4.Qf2 Qd8 5.a3 Ne7 6.exf6 Rxf6 ² (0.53) Depth: 11/33 00:00:12 8088kN 1.exf6! ² (0.56) Depth: 11/33 00:00:12 8447kN 1.exf6! Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 11/33 00:00:13 8882kN 1.Qh5+! ± (0.72) Depth: 11/33 00:00:16 10794kN 1.exf6! Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 1/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 2/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 3/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 4/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 5/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 6/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 7/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 8/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 9/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 10/12 00:00:17 1.exf6 Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Rxe8+ Rxe8 6.axb3 gxf6 ² (0.69) Depth: 11/12 00:00:17 1.exf6! ± (1.00) Depth: 12/34 00:00:19 1187kN 1.exf6! Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Be7 Rf8 6.Bxd8 Rxf6 +- (3.31) Depth: 12/34 00:00:23 4014kN 1.exf6-- +- (3.00) Depth: 13/35 00:00:35 13338kN 1.exf6-- Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Be7 +- (2.97) Depth: 13/35 00:00:38 15615kN 1.exf6! +- (3.28) Depth: 14/34 00:01:08 38291kN 1.exf6! Nxf6 2.fxe6+ Bxe6 3.Qh5+ Kg8 4.Rxf6 Bxb3 5.Be7 Rf8 6.Bxd8 Rxf6 +- (3.31) Depth: 14/35 00:01:26 51846kN (Blass, Tel-aviv 17.10.2001) Uri
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