Computer Chess Club Archives




Subject: Re: About Fafis...

Author: Peter Skinner

Date: 08:53:29 05/28/05

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On May 28, 2005 at 11:45:29, Eric Oldre wrote:

>I think the FEN string feature is the most convincing of all the evidence Alex
>provides. I just don't see how someone writing their own engine from scratch
>would duplicate that unless they either.
>a) took crafty source in it's entirety, and began modifing it
>b) cut and paste the FEN parser from crafty directly.
>c) copied the logic of the crafty parser line by line.

There have been others that took the book code, the learning code, the ICS
noalias code...

That doesn't make it a clone. It just means parts are taken from it, or

>That combined with the other evidence provided I believe leaves the burden of
>proof on Rafael. I think this evidence is much stronger than the evidence was
>with either Toga or Patriot. (at least that which was posted here)

Could be. I am not willing to just accept it is a clone. I remember talking to
Rafael during the CCT, and he certainly knew his stuff about what was going on
with his program and the techniques used to program it.

>I have not personally downloaded the source yet. But others are indicating it
>seems to be purposely obfuscated, and/or does not create the fafis 2.1
>executable but a older version. This is another example of suspicious behavior
>like the virus.

I explained how the virus _could_ have happened. I have not looked at the source
at all. I just haven't had the time, but the proof offered here doesn't convince
me. I _will_ eat crow if it is conclusively proven however :)


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