Author: Michel Langeveld
Date: 01:32:48 09/04/99
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On September 03, 1999 at 15:07:09, Eugene Nalimov wrote: >Using indixing schema that is currently used by TBGEN: > >KQQKQQ: 1,237,357,440 for each side to move. In this case, we need only one >file, as black material is identical to white material. So, 1,237,357,440 >positions total. > >KQQKQP: wtm, 7,739,363,232 positions; btm, 8,024,974,680 positions (that is >assuming you will not implement additional enumeration tables - that's possible, >but will eat a lot of RAM). Total 15,764,337,912 positions. > >Eugene Thanks for the answer I shall try to recalculate to the same number. Maybe if I understand fully the theory I can help with some addition ideas. I understand for KQQKQQ only one file is needed. I checked all my 4 piece tablebases which is ... bytes total. The amount of KQKQ.nbb, KRKR.nbb, KBKB.nbb, KPKP.nbb = 10.341.448. So these files are not necesarry when the tablebasehit algorithm is adapted a little. Amazing that this is 10.3/146.0 = 7% smaller. I remember that you posted once in the Crafty mailinglist that you could drop the total amount of bytes of the current set of .nbw and .nbb a slightly. Did you refer to this above or something else? If something else then can you explain it? Michel Langeveld
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