Author: Uri Blass
Date: 03:21:04 09/13/04
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On September 13, 2004 at 01:25:25, Sandro Necchi wrote: >On September 12, 2004 at 16:52:48, Sune Fischer wrote: > >>On September 12, 2004 at 16:43:02, Sandro Necchi wrote: >> >>>OK, this is true, but think about this: >>> >>>1. Program A with his own book play at 2650 Elo >>>2. program A without any book (may) play at 2600 Elo >>>3. Program A with another book can play from 2500 to 2650 depending how suiting >>>his style the book is...This is due to the fact that an opening book can make a >>>program play worse than without if bringing the program in positions it does not >>>like. >>> >>>so, how can you know how strong is a program if you let it play with a different >>>book? >> >>I can't, that's why I never use books in testing but instead I used fixed >>positions. > >It is the same as we are talking about positions not suiting the program style. > >I.e.: If a program is not suiting to play the French defence, than it will play >that one bad. >If you force the position it is the same than to get it from a different book. I think that a program should know to play all positions well. I prefer not to test the program with book because I believe that if I improve the program in set of positions then it is probably possible to improve it also in games by the right book. I believe that stefan use similiar idea because I rememeber that you said about one new version of shredder that it is stronger but the book does fit the style of previous version so with the opening book that people buy it is nearly the same level. I also think that testing program in many positions that are not in the original book can help to build a better book. Uri
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