Author: Uri Blass
Date: 04:13:44 12/25/00
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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
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