Author: Stuart Cracraft
Date: 20:50:47 12/30/05
Go up one level in this thread
On December 30, 2005 at 16:32:14, Vincent Lejeune wrote: > >[d]8/2B1Q3/8/6pp/7k/7P/6P1/2q3K1 w - - 0 1 > >All modern top engines have no trouble to find Qe1+!! >Only Rybka cannot win this one and play the stalemate. >I tested with first beta, do latest version blunder like this too ? > > >Analysis by Rybka 1.0 Beta 32-bit: >... >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 9 00:00:00 16kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 10 00:00:00 42kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 11 00:00:01 95kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 12 00:00:02 198kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 13 00:00:03 377kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 14 00:00:06 643kN >1.Rf2 Df1+ 2.Rxf1 > = (0.00) Profondeur: 15 00:00:10 1287kN A program can also see the right move for the wrong reason. .st 999 maxdepth = 9999999 maxtime = 99900 timed = 1 .ts position file? [wac.epd] tests.epd # of test positions to test? 1 maxtime = 99900 Interrupt current ply and return move at timeout Testsuite: Tests/tests.epd 1 positions *** Problem Solution(s): "id Stalemate" -- ** -- ** -- ** -- ** ** -- WB -- WQ -- ** -- -- ** -- ** -- ** -- ** ** -- ** -- ** -- BP BP -- ** -- ** -- ** -- BK ** -- ** -- ** -- ** WP -- ** -- ** -- ** WP ** ** -- BQ -- ** -- WK -- mv 1 stage 0, white to move, computer plays white hash=66de45e2d8b1f4de 0 0 0 0 0 0 xboard=0 Alpha=3104 Beta=3905 Maxdepth=9999999 MaxTime=99900 xboard=0 Itr/Max Mv Time Score Nodes PV 1/ 5 g1f2 3575 0.00 10 g1f2 2/ 5 g1f2 3365 0.00 65 g1f2 c1c3 3/10< g1f2 2964 0.01 701 g1f2 c1f4 f2e2 f4d4 3/10 g1f2 0 0.01 794 g1f2 c1f1 f2f1 4/11 g1f2 0 0.02 1651 g1f2 c1f1 f2f1 5/13 g1f2 0 0.03 3229 g1f2 c1f1 f2f1 6/16> g1f2 400 0.08 11930 g1f2 c1f1 f2f1 6/16 g1f2 0 0.08 12447 g1f2 c1f1 f2f1 7/18> g1f2 400 0.14 22486 g1f2 c1f1 f2f1 7/18 e7e1 401 0.15 23523 e7e1 c1e1 g1h2 e1f2 mtmt 8/21> e7e1 801 0.29 43679 e7e1 c1e1 g1h2 e1f2 c7e5 f2g2 h2g2 8/21 e7e1 801 0.29 44892 e7e1 c1e1 g1h2 e1f2 c7e5 f2g2 h2g2 9/21 e7e1 401 0.36 56852 e7e1 c1e1 g1h2 e1f2 c7d6 f2g2 h2g2 10/23> e7e1 801 0.44 72802 e7e1 c1e1 g1h2 e1f2 c7d6 f2g2 h2g2 10/23 g1f2 801 0.54 90436 g1f2 c1f1 f2e3 f1e1 e3f3 e1f2 f3e4 f2e1 11/23> g1f2 1201 0.67 115345 g1f2 c1f1 f2e3 f1e1 e3f3 e1f2 f3e4 f2e1 11/23 e7e1 1202 0.72 124956 e7e1 c1e1 g1h2 e1f2 mtmt 12/24> e7e1 1602 0.83 146251 e7e1 c1e1 g1h2 e1f2 c7d6 f2g1 h2g1 mtmt 12/29 e7e1 3435 4.21 935971 e7e1 c1e1 g1h2 e1h1 h2h1 g5g4 h3g4 h5g4 h1g1 h4g5 g1f2 g5f6 f2e2 f6e6 c7f4 e6f5 f4d6 f5e 13/32 e7e1 3469 10.94 2520921 e7e1 c1e1 g1h2 e1f2 c7d6 g5g4 d6e7 14/39 e7e1 3470 114.22 24182479 e7e1 c1e1 g1h2 e1f2 c7d6 f2g1 h2g1 g5g4 h3g4 h4g4 g1f2 g4f5 f2e2 f5g5 d6a3 15/39 e7e1 3470 130.57 27886018 e7e1 c1e1 g1h2 e1f2 c7d6 f2g1 h2g1 g5g4 h3g4 h4g4 g1f2 g4f5 f2e2 f5g5 d6a3 g5g4 a3d6 16/39 e7e1 3505 363.88 71331259 e7e1 c1e1 g1h2 e1f2 c7d6 f2g1 h2g1 g5g4 h3g4 h4g4 g1f2 g4f5 f2g3 f5g6 d6e5 g6f5 e5h8 f55f5 g3f3 17/41 e7e1 3505 401.25 79995370 e7e1 c1e1 g1h2 e1f2 c7d6 f2g1 h2g1 g5g4 h3g4 h4g4 g1f2 g4h4 d6e5 h4g4 18/...
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