Author: Mike Hood
Date: 05:53:32 01/11/03
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On January 09, 2003 at 18:49:11, Peter Kasinski wrote: >On January 09, 2003 at 16:41:12, Robert Hyatt wrote: > >>On January 09, 2003 at 11:17:12, Peter Kasinski wrote: >> >>>(NT) >> >> >>Doubtful, but _certainly_ none can use the _new_ tables on my ftp site... not >>yet, >>anyway. > >Which are the _new_ ones? And how are they different from the "normal" Nalimov >version? > >thanks, >PK The new tablebases are easy to recognize by looking at the filename. The old filenames were "k*k*.nbw.emd" and "k*k*.nbb.emd" (replacing the * with 0 to 4 characters each). (The first dot might be missing, making it "k*k*nbw.emd"). The new filenames have an extra digit, ie "k*k*.?.nbw.emd", for example "kqbnkq.0.nbw.emd". This is to prevent files becoming larger than 2 GB, which would cause problems for 32-bit operating systems, such as MS Windows. I assume that once 64-bit operating systems become standard we can go back to using only the old tablebase format for all files. On a related note... if you're not sure whether your chess program supports 6-piece tablebases in the old format, download a small tablebase pair from Bob's site to try them out. The smallest 6-piece tablebases that I've seen are KNNN-KR (only 166 MB).
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