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The crafty license almost completely outlaws derivatives.
This is not so for Fruit which is GPL 2+.

Please don't confuse the situation for Fruit derivatives with the situation for Crafty derivatives.

<rant> Unfortunately there is a big chaos in the derivatives world. I have not seen this in any other open source project. What makes chess programmers different? For Fruit there are at least the following major derivatives that I know of GambitFruit, Cyclone, Cyclops, GrapeFruit, Toga II 3.1.2SE, T...

This seems reasonable. I am getting 550000k with Toga II 14b5c on a 1.6MHz Pentium M (in the middle game).

Of course you cannot really compare nps between engines. Rybka has a very low nps and yet is very strong.

The GPL 3 offers a number of extra protections for developers. For example the GPL 2 offers no protection against a company making an online version of your program and not releasing the source. The GPL 3 also offers some protection against patent infringements law suits. The GPL 3 is however incomp...

This is what copying.txt says GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 This is what cyclone_2.0.txt says either version 2 of the License or (at your option) any later version. licence_2.0.txt refers to the GPL 2 (or later). copying.txt refers to the GPL 3. Normally programs which are GPL 2...

well cyclone_2.0.txt reads: Yes of course I can read. My question is: why does copying.txt contain the text of the GPL 3??? It is highly strange to have the included license text to be different from actual license don't you agree? Thanks for the description of the new search features. I noticed in...

I did a quick posix port. It seems to work fine. I put it on my Toga website:

http://alpha.uhasselt.be/Research/Algeb ... x_versions

Regards,
Michel

Hi,

In the file cyclone_2.0.txt you state that the license is GPL 2+. However the included
copying.txt is for the GPL 3. It would be less confusing if you included the text for the GPL 2.

For a while I thought the Cyclone was GPL 3.

Regards,
Michel.

implementation of new search features.

Can you tell us what these new search features are?

Regards,
Michel

I think the other 'PVs' are the (unique) PVs that you would have from the positions that would occur after your second, third, etc. best move, concatenated to this move. That makes sense. But you would have only incomplete information about these secondary PV's since you are searching them with a z...