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Subject: Re: Knee jerk reaction!

Author: Sandro Necchi

Date: 22:25:25 09/12/04

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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.

>
>With a book you can get lucky or unlucky with a single line. You have to play a
>lot of games even if both engines use the same book.

I was not referring to how good or correct are the lines in the book, but the
main selection.
It is the same forcing them from one position on.

Sandro
>
>-S.



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