Author: Robert Hyatt
Date: 07:31:49 09/14/01
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On September 13, 2001 at 02:09:45, Dave Gomboc wrote: > >The opposition is a special case of coordinate squares. > >The theory of coordinate squares have existed since long before 1984. > >Dave Didn't mean to imply otherwise. Bratko was simply a pawn-ending expert that worked with Danny. He explained the idea behind "coordinate squares" to me while we were discussing specific "anti-levy" ideas after we had lost the first two games in classic anti-computer style. We somehow got onto some obscure endgame position in the discussion and he explained how this worked. We then drifted to the endgame (K+P) solver Newborn had done, and the we got to fine 70 and chess 4.x's 23 minute solution (newborn predicted his program would take years to solve that one) and as Bratko showed how coordinate squares were important there, I decided to play with it after the Levy match ended. I always assumed the idea had been around for not just years, but hundreds of years. Just like opposition, distant opposition, etc.
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