Author: Uri Blass
Date: 05:08:12 12/25/00
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On December 25, 2000 at 07:13:44, Uri Blass wrote: >On December 24, 2000 at 18:01:44, Fernando Villegas wrote: > >>On December 24, 2000 at 17:11:48, Howard Exner wrote: >> >>>White to mate by completing the tree. >>> >>>[D]4k3/Q7/3pKp2/2pPPPp1/2pPPPp1/1pnrqrnp/4b3/4b3 w - - >> >> >>My God, how difficult! Can you give me a clue? :-)) > >Here is a hint > >Qa3 is the wrong direction and it leads to a draw by perpetual check(It is also >possible that white wins and that I have a mistake in the analysis because I did >not use more than some minutes to analyze it). > >1.Qa3 Kd8 2.Qa8+ Kc7 3.Qa7+ Kc8 4.Qa6+ Kb8 5.Qb6+ Kc8(Ka8 is a blunder and white >wins by Kd7) > >I think that the position after 5...Ka8 is a good test position for chess >programs. > >How much time does your engine need to find Kd7? > > >[D]k7/8/1Q1pKp2/2pPPPp1/2pPPPp1/1pnrqrnp/4b3/4b3 w - - 0 1 > >Uri My position is illegal like the original position. White cannot have 2 pawns in the same file without capturing black's pieces and black has all the 16 pieces based on the diagram. Uri
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