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Subject: Re: wher will i get a tablebase download?

Author: Mike S.

Date: 18:59:05 11/16/02

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On November 16, 2002 at 20:28:52, Mike Byrne wrote:

>On November 16, 2002 at 19:34:04, Anthony Martini wrote:
>(...)
>>      http://www.uib.no/people/pfvaf/chesslib/
>>
>>           ... but they are 7 3/4 GB in total !!!
>>
>>                (don't ask how long they took me to D/L - & I have broadband)

>I have 56K and it took me abour 3-4 weeks - you need to use an FTP clinet that
>can resume where it left off when you get disconnected ..and you will get
>disconnected on 56K ...

It seems reasonable to me in case of a 56K modem only (which I have too), to
download just the small tablebase generator program and generate the complete 3-
and 4-piece tbs subset only. These are already very useful for the engines,  and
I don't expect that many games will be lost just for the difference of 4-piece
to 5-piece tbs., and the slowdown effect will also be smaller (which mean
engines may even win a few games which they'd have lost with the 5-piece tbs.,
although I don't doubt that the 5-piece tbs. give a slightly better score in
general).

The generation process will take a few hours only, depending on cpu speed, for
the 3- and 4-piece tablebases (~ 30 MB).

The best compromise is probably these + all KR#-KR (or at least KRN-KR, KRB-KR
to cover 2 important draws and their exceptions) from the 5-piece range. But
AFAIK a lot of RAM is necessary to generate them, so maybe those must be
downloaded.

I don't know if the URL above has the generator; alternatively try:

ftp://ftp.cis.uab.edu/pub/hyatt/TB/
(retry later if unreachable)

Regards,
M.Scheidl



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