Author: Dann Corbit
Date: 10:43:23 10/06/03
Go up one level in this thread
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
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