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Subject: Re: Usage of egtb.cpp in GPL software (Amy, ExChess, ...)

Author: Dan Homan

Date: 17:10:31 12/05/00

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On December 05, 2000 at 19:21:17, Dann Corbit wrote:

>On December 05, 2000 at 17:48:34, Dan Homan wrote:
>
>>As the author of EXchess, this concerns me greatly.  I never released
>>the endgame tablebase code as GPL.  I simply included those files in my
>>distribution (like crafty) so that people could compile my program.  I've
>>written to Eugene about this.
>>
>>I really feel terrible about this and for now I am pulling the EXchess
>>source-code from my webpage and would ask others to do the same (for those
>>who have posted it) until this is cleared up.  The easiest thing for me
>>to do in the future is to merely specify that an interested party will
>>have to obtain the endgame tablebase code separately if they want to
>>compile my program and give them a reference to crafy's ftp site.
>
>An alternative would be to use Edwards/Thompson format.  It should be fairly
>easy to write a compressor.  I have lots of compression code which might prove
>useful.  Zlib is one obvious choice.

I've heard back from Eugene, and tomorrow (or perhaps thursday) I will post
a revised version of the EXchess source code package.  The revised version
will have more explicit notices about the different (non-GPL) copywrite
on the two egtb probing files.  I also plan to add something to the readme
file about this issue.

 - Dan



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