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Subject: Re: 6Man and 7Man Tablebase

Author: Simon Finn

Date: 05:19:04 11/06/01

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On November 05, 2001 at 21:08:43, Slater Wold wrote:

>Geez.  That is incredible.  The decompressed 5's are probably 20GB.  (Compressed
>they are 7GB.)
>
>All that computing power, to create the krrrrk in 4 months.  How exciting.  :)

Where do you get the figure of 4 months for krrrrk from?

Due to the internal 24-way symmetry (4! = 24), krrrrk should be
slightly smaller than krpkr. The longest mate is much shorter
so generating krrrrk should require fewer iterations than
generating krpkr; this counter-balances the increased branching
factor.

Generating krpkr on an 1333 Athlon took roughly 2 days;
I would expect krrrrk also to be do-able in a couple of days
on a decent machine.

Or does Nalimov's code process each krrrrk position 24 times
on each iteration?

Simon



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