Author: Uri Blass
Date: 11:04:57 01/09/06
Go up one level in this thread
On January 09, 2006 at 08:55:58, Eduard Nemeth wrote: >On January 09, 2006 at 08:38:08, Eduard Nemeth wrote: > >> >>>[D]r6k/2PK1p2/7p/8/2R5/8/8/8 w - - 0 62 >>> >>>Rybka has completely outplayed Fruit and is probably in a position that most >>>programs (or humans) would give up by now. This is a position that even a 500 >>>ELO player would win against Kasparov. Simply Queen the pawn with check and then >>>it is a simple mop up of the pawns and a simple Rook mate. 4.07/13 3. Well >>>Rybka actually manages to screw this up and manages only a draw !!! >>> >>>.......62.Ra4?? WHAT IN THE WORLD IS THIS ????!!!!????!!!????? Rybka goes for a >>>Queen and Rook with 2 pawns ending instead a simple Rook win. Although this >>>might be a win for white I could not get any engine to find a win. It might be >a draw even with best play by white. >> >>Ok, then is Shredder 7.04 very bad, and Rybka at last great! :-) >> >>See this analyses on my slow P3 600 with 64 MB hash (without EGTBs)!! >> >>r6k/2PK1p2/7p/8/2R5/8/8/8 w - - 0 1 >> >>Analysis by Shredder 7.04: >> >>1.c8T+ Txc8 2.Txc8+ Kg7 3.Ke7 h5 4.Tc6 f5 5.Tf6 h4 6.Txf5 Kh6 7.Ke6 h3 8.Tf2 Kh5 >> +- (4.79) Tiefe: 13/22 00:00:05 458kN >>1.c8T+ Txc8 2.Txc8+ Kg7 3.Tc6 h5 4.Ke7 f5 5.Ke6 Kg6 6.Ke5+ Kg5 7.Tc1 h4 8.Tg1+ >>Kh5 9.Kxf5 h3 >> +- (4.98) Tiefe: 14/26 00:00:08 987kN >>1.Ta4 Tg8 2.Tb4 Ta8 3.Tb8+ Kg7 4.c8D Ta7+ 5.Kc6 h5 >> +- (4.99) Tiefe: 14/30 00:00:11 1436kN >>1.Ta4 Txa4 2.c8D+ Kg7 3.Dc3+ Kg8 4.Dc6 Ta7+ 5.Ke8 f6 6.Dg2+ Tg7 7.Dd5+ Kh7 >>8.Df5+ Kg8 9.Dxf6 Kh7 10.Df5+ Kh8 >> +- (5.11) Tiefe: 14/32 00:00:15 2061kN >>1.Ta4 Txa4 2.c8D+ Kg7 3.Dc3+ Kg8 4.Dc6 Ta7+ 5.Ke8 f6 6.Db6 Tg7 7.Dxf6 Kh7 8.Kf8 >>Tb7 9.Df5+ Kh8 10.Df6+ Kh7 11.Df5+ Kh8 12.Df6+ Kh7 13.Df5+ >> +- (5.27) Tiefe: 15/36 00:00:21 3006kN >>1.Ta4 Txa4 2.c8D+ Kg7 3.Dc3+ Kg8 4.Dc6 Ta7+ 5.Ke8 f6 6.Dd5+ Kg7 7.Dg2+ Kh7 8.Kf8 >>h5 9.De4+ f5 10.De7+ Txe7 >> +- (5.29) Tiefe: 16/39 00:00:39 5954kN >> >>(Nemeth, Privat 09.01.2006) >> >>Only Draw. >> >> >>r6k/2PK1p2/7p/8/2R5/8/8/8 w - - 0 1 >> >>Analysis by Rybka 1.01 Beta 9 32-bit: >> >>1.Ta4 Txa4 2.c8D+ Kg7 3.Dc3+ f6 4.Dg3+ Kh7 5.Ke6 Ta6+ 6.Kd5 f5 7.Ke5 Tg6 >> +- (4.37) Tiefe: 15 00:01:29 4119kN >>1.c8D+ Txc8 2.Txc8+ Kg7 3.Ke7 h5 4.Tc1 Kg6 5.Tc6+ Kf5 6.Tc7 h4 7.Kxf7 h3 >> +- (4.42) Tiefe: 15 00:01:47 6187kN >>1.c8D+ Txc8 2.Txc8+ Kg7 3.Ke7 h5 4.Tc1 Kg6 5.Tc6+ Kf5 6.Tc7 h4 7.Kxf7 h3 >> +- (4.42) Tiefe: 16 00:02:19 7902kN >>1.c8D+ Txc8 2.Txc8+ Kg7 3.Tc6 f6 4.Ke6 Kg6 5.Tc1 Kg5 6.Tg1+ Kf4 7.Th1 f5 >> +- (4.44) Tiefe: 17 00:03:16 11903kN >> >>(Nemeth, Privat 09.01.2006) >> >>Surprise! Rybka can win! :-) > >Now Rybka 1.01 Preview 2 32-bit!! > > >r6k/2PK1p2/7p/8/2R5/8/8/8 w - - 0 1 > >Analysis by Rybka 1.01 Preview 2 32-bit: > >1.Ta4 Txa4 2.c8D+ Kg7 3.Dc3+ f6 4.Dg3+ Kh7 5.Dd3+ Kg7 6.Kc7 Ta5 7.Dd7+ Kg6 > +- (4.37) Tiefe: 14 00:00:56 2821kN >1.c8D+ Txc8 2.Txc8+ Kg7 3.Ke7 h5 4.Tc2 f5 5.Tg2+ Kh6 6.Ke6 f4 7.Tf2 h4 > +- (4.42) Tiefe: 14 00:01:00 3055kN >1.c8D+ Txc8 2.Txc8+ Kg7 3.Ke7 h5 4.Tc2 Kg6 5.Tc6+ Kf5 6.Tc7 h4 7.Kxf7 Kf4 > +- (4.42) Tiefe: 15 00:01:11 3679kN >1.c8D+ Txc8 2.Txc8+ Kg7 3.Tc6 f6 4.Ke6 Kg6 5.Tc2 Kg5 6.Tc5+ Kg6 7.Tc1 Kg5 > +- (4.57) Tiefe: 16 00:02:02 6377kN > >(Nemeth, Privat 09.01.2006) > >Oh, Rybka 1.01 Preview 2 32-bit can wins! > >Timecontrol: > >Shredder will perhaps win in Blitz but draws in a rapid game on my PC. >Rybka will perhaps draws in Blitz but win in a rapid game on my PC. > >Where I am wrong? > >ED. Shredder clearly need tablebases to avoid Ra4 in a reasonable time Here is shredder9 without tablebases on A3000 and it needs almost an hour to avoid Ra4(note that Rg4 is also a winning move and it is mate in at most 23 moves based on analysis with tablebases) New game [D]r6k/2PK1p2/7p/8/2R5/8/8/8 w - - 0 1 Analysis by Shredder 9 UCI: 1.c8Q+ +- (3.86) Depth: 1/3 00:00:00 1.c8Q+ +- (4.89) Depth: 1/4 00:00:00 1.c8Q+ +- (4.89) Depth: 1/4 00:00:00 1.c8Q+ Rxc8 +- (4.89) Depth: 2/4 00:00:00 1.c8Q+ Rxc8 2.Rxc8+ Kg7 +- (4.89) Depth: 3/4 00:00:00 1.c8R+ +- (4.90) Depth: 3/6 00:00:00 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Ke7 +- (4.90) Depth: 3/6 00:00:00 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Rc5 Kf6 +- (4.67) Depth: 4/8 00:00:00 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Rc5 Kf6 4.Rc6+ Kg5 +- (4.68) Depth: 5/9 00:00:00 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Rc5 Kg6 4.Rc6+ Kg5 5.Ke7 +- (4.77) Depth: 6/11 00:00:00 3kN 1.c8R+ Rxc8 +- (4.52) Depth: 7/13 00:00:00 6kN 1.c8R+ Rxc8 2.Kxc8 +- (4.52) Depth: 7/13 00:00:00 7kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Kd6 Kg6 4.Rc1 +- (4.62) Depth: 8/15 00:00:00 15kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Kd6 h5 4.Rc3 Kf6 5.Rh3 Kg5 6.Ke5 +- (4.55) Depth: 9/20 00:00:00 30kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Ke7 f5 4.Rf8 Kg6 5.Ke6 h5 6.Rf6+ Kg5 7.Rxf5+ Kg4 +- (4.66) Depth: 10/17 00:00:01 48kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Ke7 h5 4.Rf8 h4 5.Rxf7+ Kg6 6.Rf1 Kg5 7.Ke6 Kg4 +- (4.70) Depth: 11/19 00:00:01 78kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Ke7 h5 4.Rf8 h4 5.Rxf7+ Kg6 6.Ke6 Kg5 7.Rf2 h3 8.Ke5 +- (4.70) Depth: 12/19 00:00:02 123kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Kd6 Kf6 4.Rc3 Kg5 5.Rf3 f6 6.Ke6 h5 7.Rg3+ Kf4 8.Rh3 Kg5 +- (4.72) Depth: 13/21 00:00:03 225kN 1.c8R+ Rxc8 2.Rxc8+ Kg7 3.Ke7 h5 4.Rf8 h4 5.Rxf7+ Kg6 6.Ke6 Kh5 7.Rh7+ Kg4 8.Rh8 h3 9.Rg8+ +- (4.61) Depth: 14/24 00:00:04 396kN 1.Ra4 +- (4.62) Depth: 14/34 00:00:04 596kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ f6 4.Qg3+ Kh7 5.Qb3 Ra7+ 6.Ke6 Kg7 7.Qg3+ +- (4.96) Depth: 14/34 00:00:04 788kN 1.Ra4 Rxa4 +- (5.21) Depth: 15/34 00:00:05 1043kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Kg7 6.Qg2+ Kh7 7.Qc2+ Kh8 +- (5.27) Depth: 15/36 00:00:05 1480kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ f6 4.Qg3+ Kh7 5.Qd3+ Kg7 6.Ke6 Ra7 7.Qc3 +- (5.37) Depth: 16/40 00:00:06 2454kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ f6 4.Qg3+ Kh7 5.Qd3+ Kg7 6.Ke6 Ra7 7.Qc3 Kh7 8.Qc2+ Kg7 9.Qc3 Kh7 10.Qc2+ Kg7 11.Qc3 +- (5.40) Depth: 17/37 00:00:06 3579kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Ra8+ 7.Ke7 Ra7+ 8.Kd8 Ra8+ 9.Kc7 Ra7+ 10.Kb6 Re7 11.Qg5+ Kf8 12.Kc5 Rd7 13.Qf6 +- (5.48) Depth: 18/44 00:00:14 10430kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Ra8+ 7.Ke7 Ra7+ 8.Kd8 Ra8+ 9.Kc7 Ra7+ 10.Kb6 Re7 11.Qg5+ Kf8 12.Kc5 Re1 +- (5.49) Depth: 19/45 00:00:21 15376kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Ra8+ 7.Ke7 Ra7+ 8.Kd8 Ra8+ 9.Kc7 Ra7+ 10.Kc8 Ra8+ 11.Kb7 Ra2 12.Kc7 +- (5.48) Depth: 20/48 00:00:50 37836kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Ra8+ 7.Ke7 Ra7+ 8.Kd8 Ra5 9.Qf6 Ra4 +- (5.54) Depth: 21/48 00:01:09 51986kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Ra8+ 7.Ke7 Ra7+ 8.Kd8 Ra8+ 9.Kc7 Ra7+ 10.Kb6 Re7 11.Kc5 Re6 12.Qg5+ Kf8 13.Kd5 Rg6 +- (5.56) Depth: 22/52 00:01:50 83070kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qxh6 Re5+ 7.Kd7 Re6 8.Qg5+ +- (5.57) Depth: 23/53 00:04:02 187102kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qg3+ Kf8 +- (5.58) Depth: 24/55 00:09:15 435128kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qc6 Ra7+ 5.Ke8 Ra5 6.Qd6 Rf5 7.Qxh6 Re5+ 8.Kd7 +- (5.58) Depth: 25/57 00:26:00 1209979kN 1.Ra4 Rxa4 2.c8Q+ Kg7 3.Qc3+ Kg8 4.Qg3+ Kf8 5.Qb8+ Kg7 6.Qb2+ Kg8 7.Qg2+ Kf8 8.Qc6 Ra7+ 9.Kd8 Ra5 +- (5.59) Depth: 26/60 00:41:36 1941061kN 1.Rg4 +- (5.60) Depth: 26/60 00:44:32 2075449kN 1.Rg4 +- (5.95) Depth: 26/60 00:44:51 2089743kN (, 09.01.2006)
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