Author: Robert Hyatt
Date: 15:03:06 10/06/03
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On October 06, 2003 at 14:51:53, Ricardo Gibert wrote: >On October 06, 2003 at 14:25:09, Robert Hyatt 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? >>> >>>Leen >> >> >>After Nc6 where does black go? And once he goes there, what >>happens next? think zugzwang and you'll see the answer. >> >>IE once the black king goes to a8, white doesn't move the bishop or >>pawn. Black can only push the f-pawn. White king goes between g1 >>and f2. > > >Wrong. 1.Nc6+ Ka8 2.Kf2? g1=Q+ 3.Kxg1 Bxc6. White cannot move Kf2 until Pf3 gets >played. > > > Eventually black has to play g1=Q, white takes the queen >>with the king and now black can only move the bishop between h1 and >>g2, unless he chooses to give up the f-pawn also. Once that happens, >>it is a simple drawn KBN vs KBP and white can force the trade of the >>pawn for a piece if he wants. It ends up a draw. > > >Wrong again. 1.Nc6 Ka8 2.Bc8 f4 3.Bh8 f3 4.Kf2 g1=Q+ 5.Kxg1 Bg2 6.Kh2 -+ I believe that is a draw, assuming move 3 is Bh3 and not Bh8. Bxg2 seems good enough there.
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