Author: Kurt Utzinger
Date: 11:07:22 04/01/04
Go up one level in this thread
On April 01, 2004 at 13:56:25, Jason Kent wrote:
>I just read this in the FEG.txt that i got off the chessmaster website.
>
>XVI. WHY THE FEG FORMAT? ================================================
>
>Perhaps, after reading all of this, you are wondering why Chessmaster
>9000 does not use either of the more commonly used EGDB formats, namely
>those created by Eugene Nalimov or Ken Thompson (both of which bear the
>names of their creators). There are many reasons for this:
>
>1. FEG data is about 20% smaller. Additionally, half-sets can be used if
> hard drive space is an issue, making a "full useable" file set that is
> almost 1/3 the size of the complete Nalimov file set.
>2. FEG generation is much faster and doesn't need a huge amount of free
> RAM to create a set of files.
>3. FEG can do any 6-man files on a 32-bit platform.
>4. The Thompson format is not a complete set (especially pawns on both
> sides are lacking).
>5. The Thompson format stores DTC (Distance to Conversion) values,
> meaning that it stores the number of moves to either mate OR to a
> capture/promotion, and will play whichever move has the smallest
> winning value. This can result in silly moves (a capture that leads to
> a mate in eight moves instead of a non-capture that leads to mate in
> three moves).
>6. Since Chessmaster 9000 is a mass market product, the majority of its
> users are not aware of these other formats and how to get them. Also
> for the ease of development it is easier not to be dependent on
> technical support for data that was created using tools that were not
> developed by Ubi Soft.
Hi Jason
Maybe you have asked the wrong question: "Why does Chessmaster 9000
not support the egtb format that all other engines do?".
Kurt
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