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Subject: Re: Why not exchange rooks here?

Author: Anthony Cozzie

Date: 10:44:13 08/27/03

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On August 27, 2003 at 11:57:12, James T. Walker wrote:

>Here is a position which came up last night while testing a beta engine.
>[D]8/4k3/8/4K2p/7P/5rPb/8/6R1 b - -
>It's hard to find a program that will play Rf1 forcing the rook exchange and
>progressing to a tablebase won ending.  Shouldn't there be some knowledge that
>would tell engines to do this without searching 30 plies?  I mean the bishop
>covers the queening square of the black pawn which should be a clue to the win.
>Jim

[D]8/1k1b3p/8/8/5K2/6PP/8/8 w - - 0 1

Its hard to implement such knowledge.  For example if  I tell Zappa that BP v PP
is always a win, such things can happen.  (Or even if I provide a big bonus).  I
am thinking about ideas for trading down material though.  If you look through
the CCT5 archives you will see a very silly game (Baron-Zappa) where Zappa
happily lost a drawish rook ending.

anthony



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