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Subject: Re: Why not comp. vs comp. with no book.

Author: Dann Corbit

Date: 20:36:19 05/28/01

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On May 28, 2001 at 20:13:55, william penn wrote:

>On May 28, 2001 at 19:42:37, Dann Corbit wrote:
>
>>Play 'em that way if you want to.
>>
>>Silly to remove 80% of a program's strength.
>>
>>But that's just my opinion.
>
>
> no way, most of your top programs today will make book moves even without an
>opening book,

There are many openings where the true outcome is hidden 18-20 plies deep and
you will surely get sucked into a trap without an opening book.  The Evans
Gambit lines are a swell example of that.  A computer playing such a sequence
without a book will get slaughtered by one with a [good] book.

>unless you mean that the program saves time, which makes it
>stronger, since it can use more time later to calculate the middlegame
>positions,

That is a minor factor, and would not account for more than 30 ELO or so at a
maximum.

>still i don't see this accounting for 80 percent of its strength.

At least 80%.  Of course, it is just my estimate.  But I am very sure of it.



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