Author: Rafael Andrist
Date: 01:13:03 09/15/01
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On September 15, 2001 at 01:18:48, Dave Gomboc wrote: >On September 14, 2001 at 16:30:36, Rafael Andrist wrote: > >>On September 14, 2001 at 10:31:49, Robert Hyatt wrote: >> >>>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. >> >>The idea of co-ordinated squares came up with a publication from Lasker 1901. >>BTW, the "Fine #70" is composed by him. The theory was developped mainly after >>the 2nd World War. I recommend you Averbakhs book about pawn endings. Even if >>you are not interested in implementing them in Crafty, there is lot of other >>useful stuff in this book. >> >>Rafael B. Andrist > >The only problem is where to get that book!? I have not seen a (used, of >course) copy for sale for 5+ years. > >Dave I bought it (new) some years ago in a book shop which was cleaning up the archives. It was a german book printed in the DDR. I was such a fool - there were two other endgame books by Averbakh which I missed to buy... There are also some newer books on this topic around. On www.chessopolis.com you can find a book review about a book "Secrets of Pawn Endings". I don't know it, but according to the reviewer, the stuff about the co-ordinate squares is not presented well. Rafael B. Andrist
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