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Subject: Re: What kind of tablebases could you have with 11 terabytes of storage?

Author: José de Jesús García Ruvalcaba

Date: 09:52:42 07/28/99

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On July 28, 1999 at 03:34:31, Michel Langeveld wrote:

>[snip
>>>>	1870 files (according to my computations which can be wrong) are required for
>>>>full six-men tablebases. If we take them uncompressed, I think we are close to
>[snip]
>>>I think you counted wrong. Did you included the fact:
>>>-KBNK and KNBK is the same table.
>>
>>Yes.
>>
>>>-KPKB is the same table as KBKP.
>>
>>Yes too; but KBKP needs two files, one with white to move and one with black to
>>move, and I took in account this fact too.
>>
>>>
>>>So the real number of tables is far below 1870
>>
>>	I do not think so. I did not recheck my computations, and there can be a
>>mistake, but I do not think the real number is "far below". But anyway this is
>>an easy combinatorics problem, you should be able to solve it yourself and post
>>your result.
>>
>I remembered a program called namegen. This program is(was) available at
>bob's FTP site.
>
>It proceduces the folowing output with namegen 5 5. If you notice same tables
>you think are missing then let me know. The total amount in this list is 110.
>
>According to this program I get the folowing table:
>#pieces | #tables
> 2 1
> 3 5
> 4 30
> 5 110
> 6 365
> 7 1001
> 8 2520
> 9 5720
>10 12190
>
>list of all 5 men tables:
[list snipped]

	I was counting six men tablebases, not five men. Anyway, I will recheck my
computations this weekend and post my result with some details.
José.



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