Author: Vincent Lejeune
Date: 06:11:09 12/25/00
Go up one level in this thread
On December 25, 2000 at 08:08:12, Uri Blass wrote: >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 It's what one could called a Christmas Miracle ;)))
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