Author: Andreas Stabel
Date: 00:34:02 01/16/04
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On January 16, 2004 at 00:24:00, Paul Byrne wrote: >On January 15, 2004 at 04:30:59, Andreas Stabel wrote: > >>On January 12, 2004 at 22:07:26, Paul Byrne wrote: >> >>>Here are my results on the number of unique positions (note the en passant file >>>was only set if there is a *legal* en passant capture on the next ply): >>> >>>1 20 >>>2 400 >>>3 5,362 >>>4 72,078 >>>5 822,518 >>>6 9,417,681 >>>7 96,400,068 >>>8 988,187,354 >>> >>My program that calculates total number of unique positions encountered on all >>plys to a certain depth gives: >>1, 21, 421, 5783, 77796, 898812, 10281862, 106193643 >> >>Which - if you subtract gives the numbers: >>1, 20, 400, 5362, 72013, 821016, 9383050, 95911781 >> >>As you can see theese numbers do not match yours from ply 4 and onwards. >>So where is the error ? > >Some positions will occur at multiple depths in my list... the initial position >at 4 ply after Nc3 Nc6 Nb1 Nb8, for example. > >-paul Thanks for clearing that up. I think I will change my program so I can check you numbers. Regards Andreas
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