Author: Vincent Lejeune
Date: 13:39:32 10/06/03
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On October 06, 2003 at 13:43:23, Dann Corbit wrote: >On October 06, 2003 at 13:13:15, Leen Ammeraal wrote: > >>The testsuite mes400.epd contains the line >> >>[D]1k6/2p5/B7/4Np2/8/8/6p1/6Kb w - - bm Nc6+; id "MES.0372"; >> >>indicating that only Nc6+ is the best move. >>I don't understand this. >>I suppose the result is a draw. Am I right? >>If so, is Bd3 not just as good? >>Or can Black win in that case? If so, how? > >Test suites are full of bugs. However, Be2 only draws and Nc6+ definitely wins. > >White(1): epdpfga \mes372.epd mes372.out >PFGA: EPD record: 1 ID: MES.0372 >end-game phase > clearing hash tables > time surplus 0.00 time limit 16:39 (16:39) > depth time score variation (1) > 10-> 0.68 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 11 0.83 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 11-> 1.24 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 12 1.67 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 12-> 3.35 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 13 3.89 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 13-> 6.23 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 14 7.83 0.01 1. Be2 Ka7 2. Bf3 f4 3. Bxg2 Bxg2 4. > Kxg2 <EGTB> > 14 12.19 ++ 1. Nc6+!! > 14 12.70 5.82 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 c5 10. Kxf3 > 14-> 16.38 5.82 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 c5 10. Kxf3 > 15 22.77 5.82 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 c5 10. Kxf3 > 15-> 29.00 5.82 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 c5 10. Kxf3 > 16 43.60 6.20 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Bb5 Kb6 9. Ba4 Kc5 10. > Kg3 Kd5 11. Kxf3 > 16-> 55.33 6.20 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Bb5 Kb6 9. Ba4 Kc5 10. > Kg3 Kd5 11. Kxf3 > 17 1:22 6.12 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 Kc5 10. > Kxf3 Kd5 11. Kf4 > 17-> 1:40 6.12 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 Kc5 10. > Kxf3 Kd5 11. Kf4 > 18 2:18 6.37 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 f2 9. Kg2 c6 10. Bc4 > Kb6 11. Kxf2 <HT> > 18-> 2:51 6.37 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 f2 9. Kg2 c6 10. Bc4 > Kb6 11. Kxf2 <HT> > 19 4:03 6.38 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Bb5 Kb6 9. Ba4 Kc5 10. > Kg3 Kc4 11. Kxf3 Kd3 12. Bb3 > 19-> 5:02 6.38 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Bb5 Kb6 9. Ba4 Kc5 10. > Kg3 Kc4 11. Kxf3 Kd3 12. Bb3 > 20 5:03 ++ 1. Nc6+!! > 20 7:13 Mat38 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 Kc5 10. > Kxf3 <EGTB> > 20-> 9:10 Mat38 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 Kc5 10. > Kxf3 <EGTB> > 21 13:15 Mat38 1. Nc6+ Ka8 2. Bc8 f4 3. Ba6 f3 4. > Kf2 g1=Q+ 5. Kxg1 Bg2 6. Kh2 Bf1 7. > Bxf1 Kb7 8. Ne5 Kb6 9. Kg3 Kc5 10. > Kxf3 <EGTB> > time=16:39 cpu=72% mat=0 n=550887641 fh=99% nps=551k > ext-> chk=19784863 cap=258178 pp=351752 1rep=207619 mate=173605 > predicted=0 nodes=550887641 evals=89553948 > endgame tablebase-> probes=228114 hits=228114 Nouvelle partie 1k6/2p5/B7/4Np2/8/8/6p1/6Kb w - - 0 1 Hiarcs 9 find a mate in 39 and not 38, strange Analysis by Hiarcs 9: 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 +- (4.13) Profondeur: 9/2 00:00:00 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 +- (4.16) Profondeur: 10/24 00:00:00 440kN, tb=59 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Cd8+ Rc8 9.Cc6 +- (4.36) Profondeur: 11/26 00:00:03 1701kN, tb=314 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Cd8+ Rc8 9.Cc6 +- (4.61) Profondeur: 12/26 00:00:05 3277kN, tb=664 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 c5 9.Cxf3 +- (5.52) Profondeur: 12/27 00:00:07 4208kN, tb=1100 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 c5 9.Cxf3 +- (5.77) Profondeur: 13/28 00:00:11 6855kN, tb=2004 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rb6 9.Rg3 Rc5 10.Rxf3 +- (5.77) Profondeur: 13/30 00:00:16 9138kN, tb=3347 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 f2 9.Rg2 Rb6 10.Fd3 Rc5 11.Rxf2 +- (5.99) Profondeur: 14/30 00:00:31 17862kN, tb=10661 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 f2 9.Rg2 Rb6 10.Fd3 Rc5 11.Rxf2 +- (6.41) Profondeur: 15/32 00:00:46 26771kN, tb=18924 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 f2 9.Rg2 Rb6 10.Fd3 Rc5 11.Rxf2 +- (#40) Profondeur: 15/32 00:00:46 26771kN, tb=18925 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 15/33 00:00:55 31604kN, tb=25614 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 16/33 00:01:09 40797kN, tb=38114 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 17/35 00:01:44 61566kN, tb=67556 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 18/36 00:02:57 104153kN, tb=149867 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 19/37 00:04:30 159282kN, tb=268968 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 20/40 00:06:39 237737kN, tb=442046 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 21/40 00:09:32 344285kN, tb=657449 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 22/41 00:13:32 493039kN, tb=926116 1.Cc6+ Ra8 2.Fc8 f4 3.Fa6 f3 4.Rf2 g1D+ 5.Rxg1 Fg2 6.Rh2 Ff1 7.Fxf1 Rb7 8.Ce5 Rc8 9.Fa6+ Rd8 10.Cxf3 +- (#39) Profondeur: 23/43 00:19:09 706674kN, tb=1261111
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