Author: Robert Hyatt
Date: 12:53:58 11/25/02
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On November 25, 2002 at 15:22:38, Terry McCracken wrote: >You may be able to tune Craftys Q+K+P/s against Q+K+P/s endgames? > >It's a thought, anyways:o) > >Terry > >P.S. You can use a Cray Supercomputer plus a couple of GM's if you want?;-) I can do that, but it will be a couple of days. I am about to go out of town... I will try to study it a bit more... I probably analyze differently than many, in that I am trying to "retrograde" this and find positions that allow promotion and see if I can go backward to force them or if my opponent has to "help" me to reach them, which is no good... IE The cases I looked at were Kb1 and Pc2. With the white queen on that diagonal the only way to promote would be if the black queen is also on that diagonal and can remove the white queen. But if the black queen is on that diagonal, then the black king is subject to checks on the b and a files. Going to c1 seems to just give me a pawn push tempo and we start again... Can you give me an example of a "final position" where white was forced to give up the pins _and_ the checks so that the pawn can promote? IE somehow the king is at b1 or a1, and the check on the a1-h1 rank by white is met by c1=Q and the Q is defended by the king at b1/b2 or the queen on a diagonal/rank/file that supports c1. It must exist if you are sure this is winning, but I simply couldn't see how to reach such a position.
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