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Subject: Re: A question on Opening book creation?

Author: Uri Blass

Date: 14:50:50 08/30/05

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On August 30, 2005 at 12:21:10, Gopikrishna wrote:

>Gerbil creates opening book by hashing the position and comparing the hash
>values. But tscp does by getting moves from structures and comparing it with
>book lines. I guess this approach wont make it slow right? Is there any
>difference in performance? Since I would like to decide on which way to go...
>Thanks.

I did not learn tscp code but comparing with book line can be slow if there are
many book line and also may miss tranpositions

tscp may be in book after 1.e4 e6 2.d4 but be out of book after 1.d4 e6 2.e4
if the second line is not in book.

using hash mean that you do not have that problem and the problem that was
described in a different post is also not result of using hash but of having a
book of positions instead of book of pairs of position and move.

Uri



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