Computer Chess Club Archives




Subject: Re: Has Thomas Gaksch become co-author of Fruit?

Author: Dann Corbit

Date: 08:40:38 06/18/05

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On June 18, 2005 at 11:30:05, Gabor Szots wrote:

>An excerpt from the readme of the new Fruit:
> "added PV-node extensions (this is from Toga), e.g. extending
>  recaptures only at PV nodes.  Not sure if these extensions help; if
>  they do, we all need to recognise Thomas Gaksch's contribution to
>  the community!"
>In my opinion it does not matter whether they help. In my interpretation Fabien
>uses something Thomas invented or something from his code. The same what Thomas
>did (only to much less extent).

That's pretty much how GPL is supposed to work.

>This adds to the confusion and controversion. What do we have now: two engines
>or two personalities? Or more? Fruit 2.1 based on Toga II based on Fruit 2.0?
>Ridiculous. The whole GPL is ridiculous.

Not if you like the GPL idea.  Everyone gets to learn from everyone else and
vice versa.

>Maybe Fabien intended to implement these PV-node extensions anyway. Thomas did
>it _for him_ (!) and now Fabien has to refer to Thomas otherwise he would be a

90% of the ideas in every chess engine are not original.

>I can only recommend to all authors not to publish their source code. At least
>not if their engine plays too well. Maybe it is too late.

This does not make sense to me.  Why is sharing ideas such a big objection?

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