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Subject: Re: definition of clones: Danchess an Crafty

Author: Dann Corbit

Date: 11:50:26 02/15/04

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On February 15, 2004 at 14:48:29, Robert Hyatt wrote:

>On February 15, 2004 at 14:43:06, Bob Durrett wrote:
>
>>On February 15, 2004 at 14:29:52, Robert Hyatt wrote:
>>
>><snip>
>>
>>In view of the size and complexity of Crafty I wonder whether or not cloning
>>Crafty is really a good idea for the newbie chess programmer to get started.
>>
>>On the other hand, maybe there are parts of crafty which could be used in the
>>beginning so that the newbie programmer could concentrate on creating his/her
>>own code for the really important parts.
>
>I don't disagree.  The parts that always cause me the most concern center around
>the evaluation and search.  I didn't look at his search carefully at all, but I
>did look at the evaluation, and that has too much copied code...  There may be
>significant search code copied or not.  But copying either is really copying the
>"personality" of the program...
>
>Several have started with gnuchess, for example, but by the time they claim it
>as their own and distribute something, the important stuff has been re-done by
>the person doing the work, rather than just copied...

This (in my view) is a far worse offense than what has happened with the
DanChess case.  If you use someone's entire program and then slowly modify it,
that is a simple crime to me.  And one with no excuses.



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