Author: Vincent Lejeune
Date: 14:33:34 05/01/04
Go up one level in this thread
On May 01, 2004 at 17:05:27, J. Wesley Cleveland wrote: >On April 30, 2004 at 23:43:48, Robert Hyatt wrote: > >>On April 30, 2004 at 17:21:34, José Antônio Fabiano Mendes wrote: >> >>> [D]7k/6p1/2P3Qp/p3q2P/8/6P1/5K2/8 w >>> Bogoljubow vs Stahlberg, Kemeri 1933 1. Qc2!! Qxh5 2. Qc4! >> >>This one takes crafty depth=16, not real quick. Almost 4 minutes to pick Qc2, >>several more to see how good it really is... >> >[snip] >While looking at this with crafty, I found the ugliest fail high I've seen with >crafty. > >[D]2q4k/6p1/2P4p/p7/2Q5/6P1/6K1/8 w - - 0 4 > >hash table memory = 96M bytes. >pawn hash table memory = 6M bytes. > >Crafty v19.10 > >White(1): sd 11 >search depth set to 11. >White(1): 2q4k/6p1/2P4p/p7/2Q5/6P1/6K1/8 w - - 0 4 >White(1): analyze >Analyze Mode: type "exit" to terminate. >end-game phase > clearing hash tables > time surplus 0.00 time limit 22.50 (3:30) > depth time score variation (1) > 7-> 0.12 -0.14 1. Qb5 Qd8 2. Kf3 Qf8+ 3. Kg4 Qd6 4. > Kf5 Qc7 > 8 0.18 -0.15 1. Qb5 Qd8 2. Kf3 Qd6 3. Qc4 Qf6+ 4. > Kg4 g6 5. Qd5 > 8 0.46 -0.03 1. Kf3 Qd8 2. Qe4 Qd1+ 3. Kf4 Qd6+ > 4. Kf3 Qc7 5. Qd5 <HT> > 8-> 0.48 -0.03 1. Kf3 Qd8 2. Qe4 Qd1+ 3. Kf4 Qd6+ > 4. Kf3 Qc7 5. Qd5 <HT> > 9 0.95 -0.05 1. Kf3 Qf5+ 2. Ke3 Qe5+ 3. Kf3 Qf6+ > 4. Ke4 Qe7+ 5. Kf3 Qa3+ 6. Kg2 Qf8 > 7. c7 Qa8+ 8. Kf2 Qc8 > 9 1.14 0.01 1. Qd5 a4 2. Qd7 Qa6 3. c7 Qe2+ 4. > Kh3 Qh5+ 5. Kg2 Qe2+ > 9-> 1.15 0.01 1. Qd5 a4 2. Qd7 Qa6 3. c7 Qe2+ 4. > Kh3 Qh5+ 5. Kg2 Qe2+ > 10 1.28 0.01 1. Qd5 a4 2. Qd7 Qa6 3. c7 Qe2+ 4. > Kh3 Qh5+ 5. Kg2 Qe2+ > 10 1.87 ++ 1. c7!! > 10 17:13 1.45 1. c7 Qb7+ 2. Kh2 Qc8 3. Qc5 Kh7 4. > g4 Kh8 5. Qxa5 <HT> > 10-> 17:13 1.45 1. c7 Qb7+ 2. Kh2 Qc8 3. Qc5 Kh7 4. > g4 Kh8 5. Qxa5 <HT> > 11 17:14 ++ 1. c7!! > 11 17:15 5.72 1. c7 Qb7+ 2. Kh2 Qc8 3. Qc5 Kh7 4. > g4 a4 5. Qf5+ Qxf5 6. gxf5 a3 7. c8=Q > a2 8. Qc3 > 11-> 17:15 5.72 1. c7 Qb7+ 2. Kh2 Qc8 3. Qc5 Kh7 4. > g4 a4 5. Qf5+ Qxf5 6. gxf5 a3 7. c8=Q > a2 8. Qc3 > time=17:15 cpu=88% mat=-1 n=1791242494 fh=99% nps=1.73M > ext-> chk=381633369 cap=48652 pp=55417 1rep=27688883 mate=994 > predicted=0 nodes=1791242494 evals=48417627 > endgame tablebase-> probes=0 hits=0 > hashing-> 65%(raw) 64%(depth) 99%(sat) 99%(pawn) > hashing-> 0%(exact) 56%(lower) 1%(upper) Shredder think it's a draw after 1.c7, some pertpetual missed to crafty I think. Could you let crafty think a little longer ? I'm about sure you will see the "ugliest fail low you've seen with crafty" ;) 2q4k/2P3p1/7p/p7/2Q5/6P1/6K1/8 b - - 0 1 Analysis by Shredder 8: ... 1...a4 2.Rf2 a3 3.Df7 a2 4.Dxa2 Dxc7 ³ (-0.49) Profondeur: 8/23 00:00:00 35kN, tb=19 1...a4 2.Dc5 a3 3.Da7 Df5 4.Db8+ Df8 5.Dxf8+ Rh7 6.c8D = (-0.24) Profondeur: 9/27 00:00:01 89kN, tb=58 1...a4 2.Dc5 Db7+ 3.Rf2 Dc8 4.De7 Df5+ 5.Re3 Dc5+ 6.Dxc5 Rh7 7.c8D = (0.25) Profondeur: 9/27 00:00:01 106kN, tb=58 1...a4 2.Dc5 Rh7 3.Da7 Dd7 4.Db8 Dd5+ 5.Rf2 Dd2+ 6.Rg1 Dd1+ 7.Rg2 Dc2+ 8.Rf3 Dd3+ 9.Rf2 Dd2+ 10.Rg1 Dd1+ 11.Rg2 Dc2+ 12.Rf3 Dd3+ 13.Rf2 Dd2+ 14.Rg1 = (0.00) Profondeur: 10/26 00:00:01 212kN, tb=92 1...a4 2.Dc5 Rh7 3.Da7 Dd7 4.Dc5 a3 5.c8D Dd5+ 6.Dxd5 = (0.00) Profondeur: 10/26 00:00:01 220kN, tb=92 1...a4 2.Dc5 Rh7 3.Db6 Df5 4.Db7 Dc2+ 5.Rf1 Dd3+ 6.Rg1 Dxg3+ 7.Dg2 Dxc7 8.Dc2+ Dxc2 = (0.01) Profondeur: 11/27 00:00:01 293kN, tb=121 1...a4 2.Dc5 Rh7 3.De7 Db7+ 4.Rh2 a3 5.Dd8 a2 6.Dd3+ Rh8 7.Dd8+ Rh7 8.Dd3+ Rh8 9.Dd8+ Rh7 10.Dd3+ = (0.03) Profondeur: 12/31 00:00:02 528kN, tb=166 1...a4 2.Dc6 h5 3.Rh2 h4 4.gxh4 Rh7 5.Dc3 Dh3+ 6.Dxh3 g6 7.c8D ² (0.28) Profondeur: 13/31 00:00:04 1273kN, tb=328 1...a4 2.Dc6 h5 3.Rh2 h4 4.gxh4 Rh7 5.Dd6 a3 6.Dd8 Db8 7.cxb8D ± (0.78) Profondeur: 13/31 00:00:04 1318kN, tb=331 1...a4 2.Dc6 a3 3.Dd6 Rh7 4.Dd3+ g6 5.Dd8 Db7+ 6.Rh2 Db2+ 7.Rh3 a2 8.c8T Dg7 9.Dh8+ Dxh8 10.Tc7+ Dg7 ± (0.78) Profondeur: 13/33 00:00:05 1576kN, tb=404 1...a4 2.Dc6 a3 3.Dd6 Rh7 4.Dd3+ g6 5.Dd8 Db7+ 6.Rh2 Db2+ 7.Rh3 a2 8.c8T Dg7 9.Dh8+ Dxh8 10.Txh8+ Rxh8 11.Rg2 a1D ² (0.53) Profondeur: 14/32 00:00:07 2407kN, tb=593 1...a4 2.Dc6 a3 3.Dd6 Rh7 4.Dd3+ g6 5.Dd8 Db7+ 6.Rh2 Db2+ 7.Rh3 a2 8.c8D Dg7 9.De6 a1D 10.Dde8 = (0.14) Profondeur: 14/35 00:00:07 2768kN, tb=670 1...a4 2.Dc6 a3 3.Db6 Dg4 4.Df2 Dc8 5.Db6 Dg4 6.Df2 Dc8 7.Db6 Dg4 = (0.00) Profondeur: 15/41 00:00:11 4364kN, tb=1059 1...a4 2.Dc6 a3 3.Db6 Rh7 4.Db1+ g6 5.Db8 Da6 6.c8D De2+ 7.Rg1 Dd1+ 8.Rg2 De2+ 9.Rg1 Dd1+ 10.Rg2 De2+ 11.Rg1 = (-0.03) Profondeur: 16/42 00:00:14 5841kN, tb=1657 1...a4 2.Dc6 a3 3.Db6 Rh7 4.Db1+ g6 5.Db8 Da6 6.c8D De2+ 7.Rg1 Dd1+ 8.Rg2 De2+ 9.Rg1 Dd1+ 10.Rg2 De2+ 11.Rg1 = (-0.03) Profondeur: 17/43 00:00:17 7289kN, tb=2171 1...a4 2.Dc6 a3 3.Db6 Rh7 4.Db1+ g6 5.Db8 Da6 6.c8D De2+ 7.Rg1 Dd1+ 8.Rg2 De2+ 9.Rg1 Dd1+ 10.Rg2 De2+ 11.Rg1 = (-0.03) Profondeur: 18/45 00:00:22 9908kN, tb=2989 1...a4 2.Dc6 a3 3.Db6 Rh7 4.Db1+ g6 5.Db8 Da6 6.c8D De2+ 7.Rg1 Dd1+ 8.Rg2 De2+ 9.Rg1 Dd1+ 10.Rg2 De2+ 11.Rg1 = (-0.03) Profondeur: 19/47 00:00:33 14922kN, tb=4351 1...a4 2.Dc6 a3 3.Db6 Rh7 4.Db1+ g6 5.Db8 Da6 6.c8D De2+ 7.Rg1 Dd1+ 8.Rg2 De2+ 9.Rg1 Dd1+ 10.Rg2 De2+ 11.Rg1 = (-0.03) Profondeur: 20/49 00:00:54 23476kN, tb=6801 1...a4 2.Dc6 a3 3.Dd6 Rh7 4.Dd3+ g6 5.Dc4 Rg7 6.Dc3+ Rh7 7.Dc4 Rg7 8.Dc3+ Rh7 9.Dc4 Rg7 = (0.00) Profondeur: 21/53 00:02:49 84664kN, tb=13084 1...a4 2.Dc6 a3 3.Dd6 Rh7 4.Dd3+ g6 5.Dc4 h5 6.Df7+ Rh6 7.Df4+ Rg7 8.Dd4+ Rh7 9.Dd8 Db7+ 10.Rh2 Db2+ 11.Rh3 a2 12.c8D Dg7 13.Da8 a1D 14.Dxa1 Df6 = (-0.01) Profondeur: 22/53 00:04:58 151770kN, tb=21082
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