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Subject: Re: Differenet sized fruit books

Author: Dann Corbit

Date: 10:03:25 07/11/05

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On July 09, 2005 at 06:35:24, Andreas Guettinger wrote:

>On July 09, 2005 at 05:37:05, Dann Corbit wrote:
>
>>On July 09, 2005 at 05:21:42, Marc Lacrosse wrote:
>>
>>>None of these books seem to be identical to the one you posted on WBEC a few
>>>days ago.
>>>Did you already have some tests of their relative value ?
>>
>>Not yet.
>>I am running one now.
>
>Would you let us peek a bit inside the creation of these opening books?
>If they originate from a pgn collection (i.e. junkbase), what where the selction
>criteria? >2400 Elo?

Junkbase is too crappy for that.
I use corrspondence games, filtered for strength.
I use TWIC games, filtered for strength and time control (no simul, blitz,
blindfold, rapid, etc.)
I use SSDF games filtered for strength.

>How long book lines can one expect? (polyglot options)

I don't know.  I sometimes experiment with line length and then forget what I
did.  For the really big book, I just let the filtering program decide.

>If you want to keep it a secret ignore my post.

There are no secrets.  I will tell you anything you want to know.



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