Author: Eugene Nalimov
Date: 14:59:38 04/01/04
Go up one level in this thread
On April 01, 2004 at 15:16:34, Marc Bourzutschky wrote: >The Chessmaster format is indeed better What does it mean "better"? :-) It stores less information, thus compresses better. Thanks, Eugene >but no interface other than through >Chessmaster is available. Besides, the Nalimov format has become a quasi >industry standard. Since the contents of the two tablebases is the same, the >main advantage of the Chessmaster is faster generation with less RAM, and >somewhat smaller compressed file sizes. If there were a tool to translate >Chessmaster format to Nalimov format we would already have all the 6-man >tablebases by now. > >On April 01, 2004 at 14:18:16, Jason Kent wrote: > >>On April 01, 2004 at 14:07:22, Kurt Utzinger wrote: >> >>>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 >> >>The reason I ask is because the egtb format sounds like its a little better. I >>kinda wish cm9k used nalimov so it would be more compatible.
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