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Subject: Re: Cloned Chess Engines

Author: Steven Edwards

Date: 20:10:26 05/05/05

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On May 05, 2005 at 21:59:42, Dann Corbit wrote:
>On May 05, 2005 at 21:52:42, Dave Potesta wrote:

>>I always assumed that all the engines out there were original,
>>I guess not.  Most don't even say it.
>>   I guess the Chess Programmer world is even smaller than I once thought.
>>
>> Which engines are clones?
>
>All of them in one sense -- the ideas are all borrowed from others.  The amount
>of stuff that's truly original in any chess engine is probably about 5% on
>average.

The above comment is a bit general, but isn't too far from the truth.  And kind
of sad as well.

For the record, Symbolic's ChessLisp interpreter and the Lisp move selection
source represent 30K+ lines of source that won't be found in any other program.
The same could be said of the 65K line C++ toolkit except for the parts I lifted
from Spector.



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