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Subject: Re: 6 man endgame database (Finnished?)

Author: Joshua Haglund

Date: 00:04:18 09/02/05

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On September 01, 2005 at 23:23:18, John Merlino wrote:

>On September 01, 2005 at 20:49:32, Joshua Haglund wrote:
>
>>On September 01, 2005 at 15:42:29, John Merlino wrote:
>>
>>>On September 01, 2005 at 13:33:14, Peter Skinner wrote:
>>>
>>>>On September 01, 2005 at 12:47:57, Vincent Diepeveen wrote:
>>>>
>>>>>A single 7 men in Nalimov format you probably won't see soon.
>>>>>
>>>>>Just guessing blindfolded now it would be in nalimov format something like 200
>>>>>terabyte for all 7 men?
>>>>>
>>>>>Most likely either Marc or in Diep format you'll see all useful 7 men as the
>>>>>first.
>>>>
>>>>How big are your 3/4/5/6 man tablebases in total?
>>>>
>>>>This was a point of discussion on ICC the other night and many there thought
>>>>that it was possible to get better/small tablebases than the current Nalimov
>>>>structure.
>>>>
>>>>Most believed that the EGDB's that come with Chessmaster are the best by far.
>>>>
>>>>Peter
>>>
>>>Well, I suppose that they're "best" because they're faster to generate and
>>>smaller than Nalimov. :-)
>>>
>>>However, they have one big drawback -- they can't be used outside of
>>>Chessmaster. Or, at least, not until Johan allows them to be.
>>>
>>>jm
>>
>>They also work if you have just the white side tables. Just change a parameter
>>and they work with half the space.
>
>You don't have to change any "parameter". The EGDB access code just knows how to
>operate if you only have one side to move available. Doing this causes longer
>access times, of course. But since The King doesn't probe the databases in
>search, and all access is done by the CM GUI, this doesn't really matter.
>
>And it is actually a little better to have only the btm files, because they are
>generally slightly smaller.
>
>The only time that both wtm and btm files are needed is when you are generating
>other files that depend on them.
>
>jm

Hey John,

I just remember reading the FEG readme, and it said something about changing a
parameter value (configuration file for the GUI) so it gave you the correct
mate. Other than that, yeah, btm files would be the way to go.

Joshua Haglund
toneewa@yahoo.com



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