Author: Uri Blass
Date: 15:42:56 10/06/03
Go up one level in this thread
On October 06, 2003 at 18:03:06, Robert Hyatt wrote: >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. move 3 is Ba6 The idea is to put black to a zugzwang so Bh3 that gives black the option Kb7 does not make sense. 3.Ba6 does not let the black king to move Uri
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