Author: Jon Dart
Date: 20:44:39 02/21/06
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I haven't found a mate. Arasan gives a +5 score after a deep search but perhaps it is fooled. --Jon On February 21, 2006 at 22:44:50, Will Singleton wrote: >On February 21, 2006 at 22:27:37, Will Singleton wrote: > >>On February 21, 2006 at 22:02:42, Jon Dart wrote: >> >>>[D] 8/6p1/8/1K4p1/P7/1n6/6k1/6B1 w - - >>> >>>How long to find Bb6 with a + score? (Ba7 is also good). >>> >>>--Jon >> >>Amateur 2.86 (32 secs, amd 4200+): >> >>15 85 484 3230297 Be3 Kf3 Bxg5 Ke4 Kc4 Na5 Kc5 Nb3 Kb5 Nd4 >>16 86 1210 8354042 Be3 g4 >>17 85 1861 12636363 Be3 Kf3 >>17 170 3270 22212398 Bb6 g6 Kc4 Nd2 Kd3 Nf3 a5 Ne5 Kc3 Nd7 Bd8 Nc5 >>18 454 8938 60402156 Bb6 Kh1 >>19 457 15951 108895881 Bb6 Kf3 Kb4 Ke4 Kxb3 Kd5 a5 Kc6 Kc4 Kb7 Kd4 Ka6 >> Ke4 g6 Bc7 Kb7 Bd8 g4 >> >>Rybka gets it in < 1 sec, but I didn't see another program get it fast in >>limited testing. >> >>Will > > >Ack, you fooled me, I think. Isn't Bb6 actually a draw? Even though Rybka and >Spike give +4 immediately, I think it's because they can't see that the king can >block the a pawn indefinitely. Or, is there some egdb that shows a solution? > >Will
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