Author: José Antônio Fabiano Mendes
Date: 09:20:21 02/04/00
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On February 03, 2000 at 17:17:15, Robert Hyatt wrote: >On February 02, 2000 at 07:36:12, José Antônio Fabiano Mendes wrote: > >>CHESS4.0-Dartmouth program *** Fourth ACM computer chess tournament >>Source:"Chess Skill in Man and Machine", Springer-Verlag,page 163 >>[D]r6k/1p3ppp/1p6/1R1Qp3/r3P2q/2P2P2/P2R2PP/K7 w - - >>Larry R. Harris writes:"a 9-ply search is required to determine that >>Black´s attack is harmless and therefore White can safely proceed with RxP." >>It seems though that Black´s attack is strong enough for a draw. >>[for instance:1.Rxb6 Qe1+ 2.Rb1 Rxa2+ 3.Rxa2 Qxc3+ and draws] >>Any comments? Enjoy,JAFM > > >Actually I am not sure Rxb6 is the best move. As a human I would avoid the >nonsense with Rb1, as white still wins a pawn in the deal since the queen is >attacking b7. > >Of course, at that tournament, chess 4.0 was running on an older CDC machine >and was searching (maybe) 1K nodes per second, so it is doubtful they were >able to get beyond 5 plies, maybe 6 at the max, since they were searching 6 >plies in 1976 on the Cyber 176. I was at that tournament watching, but don't >remember what they played... You are right,Rb1 seems to be the move here. JAFM
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