Author: Robert Hyatt
Date: 11:26:24 10/06/03
Go up one level in this thread
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. I didn't see the win myself. I could see white ripping a couple of pawns eventually, but not a forced mate. Apparently white has more than I thought... > >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
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