Author: Pham Minh Tri
Date: 17:49:48 05/20/02
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On May 20, 2002 at 17:05:00, William H Rogers wrote: >There was some extensive testig of Belle on ratings vs plys. In the lower levels >ie 2-6 plys the ratings jumped about 250 to 300 points per ply, but at higher >ply numbers the ratings became less and less. I read an old paper (from Advance Computer Chess) the author said that there is an tactical depth around 6-7, after that fly, searching more ply will not bring much points, instead people should add more knowledge to his evaluation. I noticed that 6 is key threshold using in adaptive null move method of Dr. Heinz. Surely it is not random number.
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