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Subject: Re: unique positions at 9 ply...

Author: Richard Bean

Date: 01:54:06 01/26/04

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> 1              20     -       -        -
> 2             400   20.00     -        -
> 3           5,362   13.41    0.28 KB  0.43
> 4          72,078   13.44    4.34 KB  0.49
> 5         822,518   11.41   77.72 KB  0.77
> 6       9,417,681   11.45    0.95 MB  0.85
> 7      96,400,068   10.24   14.04 MB  1.22
> 8     988,187,354   10.25  154.59 MB  1.32
> 9   9,183,421,888    9.29    1.77 GB  1.66
>
>"branch" is just the effective branching factor from ply-to-ply.
>"size" is the size of the file containing the positions (which can then be used
>    to compute the next ply).
>"bits" is the number of bits/position in the file.

Congratulations, please add it to
http://www.research.att.com/projects/OEIS?Anum=A083276

What is bits/position, were you using some sort of Huffman coding?  It shouldn't
take too long to verify Albert Bertilsson's distributed computation of perft(11)
with these positions.



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