Author: blass uri
Date: 22:44:02 10/20/98
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On October 20, 1998 at 20:05:24, William H Rogers wrote: >I did not mean to imply that getting a faster machine was the only thing that >influenced people, although when a programmer comes to a mental block for new >ideas, that may be his only solution. >In the freeware testing of games Rebel beat MChess without ever leaving his >books. That turned Rebel in that game only, as a device for looking up moves. >The real engine of the program did not ever come into play. >Almost all chess programs give you the option of turning off the books and I >think that the real strength of the program then comes into view. That is all >that I was suggesting. MChess is not a simple minded program, but it fought >against a proven line of game logic and lost before the other program started to >use its logical engine. >If you wrote a program that only had a limited book and had to compete with >other programs with unlimited books, the advantage would be thiers, reguardless >of your programs playing strength. Only if they have a good book. Sometimes a book can be counter productive. I saw cases when a program left book with a lost position and this is what happened to Mchess. Programs should not use their books without checking it. Crafty does it and use 10% of its time for analyzing when it is on book. Uri
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