Author: Robert Hyatt
Date: 13:29:57 12/27/03
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On December 27, 2003 at 02:48:28, Steffen Jakob wrote: >Hi Mike, > >you forgot to mention this nice page: > >http://www.chessbase.com/puzzle/christmas2003/chr03-2a.htm > >Greetings, >Steffen. A couple of notes. 1. Friedel is wrong about the B+wrong rook pawn in CB. It did have that bit of knowledge. This game was played well before Harry had joined the team, and was against USCF master Joe Sentef in the 1981 Mississippi Closed State Championship event, which CB handily won 5-0 in fact. I had sent the entire log to Ken Thompson, as this was the first time a master had been beaten by a computer in long time control games, and he was working with some writer that published the game and the log excerpts in the Chess Life magazine that year. He tried it on Belle and Belle could not see the draw for something like 18 minutes. CB never considered taking the piece was good, the score was a draw immediagely and it knew that... Harry might well have been confused by the fact that after moving the B, it could see the promotion, but even before that it realized that taking the piece was no good. As far as the logs go, back then there were no "log files". All I had was a hard-copy printout, which I still have in my files along with the Belle analysis Ken did. Harry never had any "files" as we simply didn't produce them back then... 2. I also remember Botvinnik and the Bd7 position. That was neither the first nor last time where a GM would be out-searched by Cray Blitz, over the years. I also showed him that we could tactically solve his Ba3 position very quickly, thanks to raw speed. :) This happened in NY in 1983 by the way, at the first WCCC event we won... The first special-purpose piece of knowledge I did was "square of the king" so that my old programs would not get hoodwinked in positions where a pawn could not be caught/stopped. It wasn't more than a year later where the bishop plus wrong-rook-pawn was added as humans used that to trick it a few times in won endings. The Sentef game was an example. > >On December 27, 2003 at 00:51:11, Mike Byrne wrote: > >> >>[d]8/r7/8/5bk1/8/5B2/5RPP/6K1 b - - 0 1 >>Crafty19.08 SE UCI 2 MB: >> 7 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >> 8 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >> 9 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>10 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>11 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>12 00:00 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>13 00:01 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>14 00:04 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3 >>15 00:06 0.01 1. ... Ra1+ 2.Rf1 Rxf1+ 3.Kxf1 Bh3 4.gxh3
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