Author: Uri Blass
Date: 22:53:11 02/09/02
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On February 09, 2002 at 22:35:54, Robert Hyatt wrote: >On February 09, 2002 at 11:26:00, Joshua Lee wrote: > >>How do you determine the space necessary for each additional piece? If we know >>all 6 man will take over 1 TerraByte what about figuring out the 7's, 8's ....to >>32 and up? I personally think the only way to fit it all in less space is to >>make a new kind of Tablebase but since the compression is already good this >>would be hard to do. > > >Several issues: > >1. 6 piece files are going to require some large mate-in-N scores. IE they >will need 16 bits at least, which doubles the size compared to a current 5 >piece file where all scores are 8 bits max. 1)You can use 8 bits max because I guess that most of the very long mates are practically draws by the 50 move rule so it is better to assume that they are drawn and to save space. 2)It is better to build correct tablebases that are based on the 50 move rule and distance to conversion and knowing the distance to mate is not important. Uri
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