Author: pavel
Date: 16:39:43 04/25/05
Go up one level in this thread
On April 24, 2005 at 21:46:00, John Merlino wrote: >On April 24, 2005 at 21:07:45, pavel wrote: > >>[D]1b6/4P3/1P2PN2/8/8/P1k5/P1p2P2/K5B1 w >> >>http://www.edcollins.com/chess/under-promote.htm >> >>Any program find the checkmate? >> >>pavs > >Checkmate is a VERY long way away from the initial position -- maybe as many as >30 moves. That's a bit too far for an engine to see. > >However, there MIGHT be an error in this puzzle. The answer that is given is: > >[Event ""] >[Site ""] >[Date "2005.4.24"] >[Round ""] >[White "Merlin"] >[Black "Merlin"] >[TimeControl "-"] >[Result "*"] >[Setup "1"] >[FEN "1b6/4P3/1P2PN2/8/8/P1k5/P1p2P2/K5B1 w - - 0 1"] > >1.Ne4+ Kd3 2.Nc5+ Kc3 3.Nb3 Be5 4.f4 Bf6 5.e8=N Bh8 6.f5 Be5 7.Bh2 Bxh2 >8.b7 Be5 9.b8=B Bxb8 10.Nc7 Bxc7 11.e7 Be5 12.e8=R Bf6 13.Re6 Bg7 14.f6 > >and White wins. > >But it seems that 8...Kd3 9.Nc1+ Kd2 10.Kb2 Be5+ 11.Kb3 Kxc1 12.Nc7 Bxc7 13.e7 >Kd2 14.e8=Q c1=Q might hold for Black. Here's the position after my line: > >[D]4Q3/1Pb5/8/5P2/8/PK6/P2k4/2q5 w - - 0 15 > >It would take a lot of analysis, much more than I'm willing to commit to it. :-) > >jm Thanks for the analysis, I did some overnight 12 hour analysis myself with Shredder, but failed to save it as I accidently closed the window. :(
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