Author: Uri Blass
Date: 00:22:54 08/14/02
Go up one level in this thread
On August 14, 2002 at 01:01:57, Slater Wold wrote: >White(1): setboard 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 67 >Black(1): go >end-game phase > clearing hash tables > time surplus 0.00 time limit 3:00 (3:00) > nss depth time score variation (1) >starting thread 1 > (4) 8-> 0.39 0.01 1. ... Bxg6 2. Rxg6 <HT> > (3) 9 0.48 0.01 1. ... Bxg6 2. Rxg6 <HT> > (4) 9-> 0.73 0.01 1. ... Bxg6 2. Rxg6 <HT> > (3) 10 0.97 0.01 1. ... Bxg6 2. Rxg6 <HT> > (4) 10-> 1.67 0.01 1. ... Bxg6 2. Rxg6 <HT> > (3) 11 1.70 0.01 1. ... Bxg6 2. Rxg6 <HT> > (4) 11-> 3.55 0.01 1. ... Bxg6 2. Rxg6 <HT> > (3) 12 3.55 0.01 1. ... Bxg6 2. Rxg6 <HT> > (4) 12-> 7.45 0.01 1. ... Bxg6 2. Rxg6 <HT> > (3) 13 7.53 0.01 1. ... Bxg6 2. Rxg6 <HT> > 13 21.12 ++ 1. ... b2!! > 13-> 2:49 -0.38 1. ... b26 > time=3:00 cpu=307% mat=1 n=242037717 fh=94% nps=1342k > ext-> chk=29936339 cap=78644 pp=227271 1rep=1144737 mate=32723 > predicted=0 nodes=242037717 evals=21110434 > endgame tablebase-> probes done=239240 successful=53187 > SMP-> split=778 stop=81 data=9/32 cpu=9:13 elap=3:00 > >Black(1): b2 > time used: 3:00 > >#1 - You should see b2 wins pretty much immediatly. Sure, 21.12 seconds isn't >bad, but imagine this on a PIII 600! -0.38 isn't very convincing either. I disagree. seeing that b2 is winning is not an easy task for programs. Here is some analysis on p850 with part of the tablebases(including KR vs KPP) Junior7 could not see it in a minute(I stopped it so I do not know if it is faster than Crafty) when Deep Fritz also needed time (faster than Crafty but Crafty is only an amateur) My crafty also needs depth 14 to find it under chessbase gui and I do not find that amateurs like Comet are better and at least CometB27 that is not very old could not find it in 3 minutes when Crafty could do it. New position 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 1 Analysis by Junior 7: 1...b2 2.g7 Bh7 3.Re1 b1Q 4.Rxb1 µ (-1.10) Depth: 3 00:00:00 1...b2 2.g7 Bh7 3.Re1 b1Q 4.Rxb1 µ (-1.10) Depth: 6 00:00:00 1kN 1...b2 2.g7 Bh7 3.Re1 Kd4 4.Rb1 Kc3 5.Kg3 ² (0.29) Depth: 9 00:00:00 54kN 1...Bxg6 2.Rxg6 = (0.00) Depth: 9 00:00:00 61kN, tb=3 1...Bxg6 2.Rxg6 = (0.00) Depth: 12 00:00:00 81kN, tb=23 1...Bxg6 2.Rxg6 = (0.00) Depth: 15 00:00:01 802kN, tb=285 1...Bxg6 2.Rxg6 = (0.00) Depth: 17 00:00:11 8955kN, tb=1077 1...Bxg6 2.Rxg6 = (0.00) Depth: 19 00:01:00 51656kN, tb=6118 (blass, tel-aviv 14.08.2002) New position 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 1 Analysis by Deep Fritz: 1...Bxg6-- +- (1.41) Depth: 1/3 00:00:00 1...Bxg6-- +- (1.41) Depth: 1/3 00:00:00 1...b2! = (0.19) Depth: 1/3 00:00:00 1...b2! ³ (-0.34) Depth: 1/3 00:00:00 1...b2 2.g7 = (-0.13) Depth: 2/5 00:00:00 1...b2 2.g7 Bh7 = (0.12) Depth: 3/8 00:00:00 1...Bf5! = (0.06) Depth: 3/8 00:00:00 1...Bf5! 2.Rf6 = (0.03) Depth: 3/8 00:00:00 1...Bc4! = (0.00) Depth: 3/8 00:00:00 1...Bc4! 2.Re8 = (-0.25) Depth: 3/8 00:00:00 1...Bc4 2.Re1 b2 3.Kg3 = (-0.09) Depth: 4/8 00:00:00 1...Bc4 2.Re1 b2 3.Kg3 Kd4 = (-0.25) Depth: 5/10 00:00:00 1kN 1...b2! ³ (-0.28) Depth: 5/10 00:00:00 2kN 1...b2! 2.g7 ³ (-0.56) Depth: 5/12 00:00:00 2kN 1...b2-- = (-0.25) Depth: 6/12 00:00:00 3kN 1...b2-- 2.g7 Bh7 3.Re1 Bg8 4.Kg3 = (0.19) Depth: 6/13 00:00:00 5kN 1...Bc4! = (0.00) Depth: 6/13 00:00:00 6kN 1...Bc4! 2.Re1 b2 3.g7 Kd4 4.Rg1 = (0.09) Depth: 6/13 00:00:00 6kN 1...Bc4 2.Re1 Kd4 3.Rd1+ Ke5 4.g7 b2 = (0.12) Depth: 7/16 00:00:00 12kN, tb=1 1...b2! = (0.09) Depth: 7/16 00:00:00 13kN, tb=1 1...b2! 2.g7 Bh7 3.Re1 Kc4 4.Rb1 Kc3 = (0.06) Depth: 7/17 00:00:00 17kN, tb=1 1...b2-- ² (0.37) Depth: 8/19 00:00:00 44kN, tb=3 1...b2-- ² (0.37) Depth: 8/19 00:00:00 45kN, tb=3 1...Bc4! ² (0.34) Depth: 8/19 00:00:00 46kN, tb=3 1...Bc4! 2.Re1 d5 3.g7 d4 4.Kg3 b2 5.Kf4 ² (0.28) Depth: 8/19 00:00:00 52kN, tb=3 1...Bf5! = (0.25) Depth: 8/19 00:00:00 55kN, tb=5 1...Bf5! 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 8/19 00:00:00 57kN, tb=5 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 9/17 00:00:00 73kN, tb=12 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 10/18 00:00:00 127kN, tb=36 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 11/20 00:00:00 259kN, tb=62 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 12/22 00:00:01 558kN, tb=114 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 13/25 00:00:02 1493kN, tb=214 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 14/27 00:00:06 4040kN, tb=481 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 15/30 00:00:15 10401kN, tb=1046 1...b2! = (0.12) Depth: 15/30 00:00:20 13175kN, tb=1688 1...b2! 2.g7 Bh7 3.Re1 Kc4 4.Kg3 Kb3 5.Kg4 Ka2 6.Re2 Ka1 7.Re1+ -+ (-1.44) Depth: 15/33 00:00:31 21436kN, tb=2108 (blass, tel-aviv 14.08.2002) New position 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 1 Analysis by Crafty 18.15: 1...b2 2.g7 b1Q 3.g8Q +- (1.53) Depth: 1/3 00:00:00 1...b2 2.g7 b1Q 3.g8Q +- (1.53) Depth: 2/6 00:00:00 1...b2 2.g7 b1Q 3.g8Q ± (1.13) Depth: 3/9 00:00:00 1...b2 2.g7 Bh7 3.g8Q Bxg8 µ (-1.15) Depth: 3/9 00:00:00 1...b2 2.g7 b1Q 3.g8Q Qc2+ 4.Kg3 d5 +- (1.47) Depth: 4/9 00:00:00 1...Bxg6 2.Rxg6 = (0.01) Depth: 4/9 00:00:00 1...Bxg6 2.Rxg6 = (0.01) Depth: 5/11 00:00:00 1...Bxg6 2.Rxg6 = (0.01) Depth: 6/13 00:00:00 11kN, tb=15 1...Bxg6 2.Rxg6 = (0.01) Depth: 7/15 00:00:00 19kN, tb=27 1...Bxg6 2.Rxg6 = (0.01) Depth: 8/16 00:00:00 51kN, tb=55 1...Bxg6 2.Rxg6 = (0.01) Depth: 9/19 00:00:00 156kN, tb=100 1...Bxg6 2.Rxg6 = (0.01) Depth: 10/21 00:00:02 452kN, tb=239 1...Bxg6 2.Rxg6 = (0.01) Depth: 11/23 00:00:10 976kN, tb=414 1...Bxg6 2.Rxg6 = (0.01) Depth: 12/27 00:00:14 2648kN, tb=766 1...Bxg6 2.Rxg6 = (0.01) Depth: 13/29 00:00:22 6593kN, tb=1513 1...Bxg6 2.Rxg6 = (0.01) Depth: 14/31 00:01:45 20303kN, tb=4876 1...b2 ³ (-0.39) Depth: 14/31 00:02:40 48439kN, tb=9504 (blass, tel-aviv 14.08.2002) New position 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 1 Analysis by Comet B27: 1...Bxg6 2.Rxg6 ± (0.75) Depth: 1/3 00:00:00 1...b2 -+ (-2.19) Depth: 1/6 00:00:00 1...b2 2.g7 b1R -+ (-1.90) Depth: 2/7 00:00:00 1...b2 2.g7 Bf5 = (-0.06) Depth: 2/7 00:00:00 1...Bf5 2.Re8 ³ (-0.52) Depth: 2/7 00:00:00 1...Bf5 2.Kg3 µ (-0.83) Depth: 2/7 00:00:00 1...Bf5 2.Re3 Bd3 = (-0.10) Depth: 3/8 00:00:00 1...Bc4 2.Re4 Bg8 µ (-0.82) Depth: 3/9 00:00:00 1...b2 2.g7 Bh7 3.Re1 µ (-1.02) Depth: 3/9 00:00:00 1...b2 2.g7 Bh7 3.Re1 = (-0.06) Depth: 3/9 00:00:00 1...Bc4 2.Re4 µ (-0.82) Depth: 3/9 00:00:00 1...Bc4 2.Re4 d5 3.Re3 ³ (-0.26) Depth: 4/12 00:00:00 1...Bf5 2.Re3 b2 3.g7 Bh7 4.Rb3 ³ (-0.63) Depth: 4/12 00:00:00 1...b2 2.g7 Bh7 3.Re1 d5 µ (-1.17) Depth: 4/12 00:00:00 1...b2 2.g7 Bh7 3.Re1 d5 µ (-1.17) Depth: 4/12 00:00:00 1...b2 2.g7 Bh7 3.Re1 d5 µ (-1.17) Depth: 5/12 00:00:00 11kN 1...b2 2.g7 Bh7 3.Re1 d5 4.Rb1 ³ (-0.34) Depth: 6/12 00:00:00 17kN 1...Bf5 2.Re3 Kd5 3.g7 b2 4.g8Q+ Kc5 µ (-1.03) Depth: 6/13 00:00:00 23kN 1...Bf5 2.Re3 Kd5 3.g7 b2 4.g8Q+ Kc5 µ (-0.76) Depth: 6/14 00:00:00 36kN 1...Bf5 2.Re3 Kd5 3.g7 b2 4.g8Q+ Kc5 ³ (-0.49) Depth: 6/14 00:00:00 41kN 1...Bf5 2.Re3 Kd5 3.g7 b2 4.g8Q+ Kc5 = (-0.22) Depth: 6/14 00:00:00 45kN 1...b2 2.g7 Bh7 3.Re1 d5 4.Rb1 ³ (-0.34) Depth: 6/14 00:00:00 48kN 1...b2 2.g7 b1Q 3.g8Q Qg1+ 4.Qxg1+ Kd5 = (-0.20) Depth: 7/14 00:00:00 58kN 1...b2 2.g7 Bh7 3.Re1 Be4 4.Rxe4 = (0.07) Depth: 7/16 00:00:00 88kN 1...Bf5 2.Re3 Bxg6 3.Rxb3 = (0.00) Depth: 7/16 00:00:00 126kN 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 8/16 00:00:01 174kN 1...b2 2.g7 b1Q 3.g8Q Bf5 4.Re3 = (-0.13) Depth: 8/16 00:00:01 192kN 1...b2 2.g7 b1Q 3.g8Q Bf1 4.Qc8+ Kd5 = (-0.13) Depth: 8/16 00:00:01 204kN 1...b2 2.g7 b1Q 3.g8Q Qb2+ 4.Qg2 Qxg2+ 5.Kxg2 = (0.00) Depth: 9/17 00:00:01 331kN 1...b2 2.g7 b1Q 3.g8Q Bf5 4.Rxd6 Kxd6 5.Qd8+ Bd7 6.Qf6+ Be6 7.Qf8+ = (0.00) Depth: 10/20 00:00:03 1008kN 1...b2 2.g7 b1Q 3.g8Q Qb2+ 4.Kg3 Kd5 = (0.14) Depth: 11/20 00:00:09 2053kN 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 11/20 00:00:10 2223kN 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 12/22 00:00:13 2982kN 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 13/23 00:00:24 6689kN 1...Bf5 2.Rf6 Bxg6 3.Rxg6 = (0.00) Depth: 14/25 00:01:01 13676kN (blass, tel-aviv 14.08.2002) > >#2 - What's up with 13-> 2:49 -0.38 1. ... b26 <//==- that? > >#3 - Any reason you can see why Crafty would take *forver* (even after this >move) to see the win? The win is not simple without the relevant knowledge that most programs do not have. Uri
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