Fruit, Rybka, Strelka final conclusion! (I hope)

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Alessandro Scotti

Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Alessandro Scotti »

Michael Sherwin wrote:Strelka 1.8 is a derivitive of Fruit and Rybka and is not a clone!
I agree with this, and being as it seems a "soft" derivative it's not bound by any existing license too.
Of course in case Strelka's author needs a third expert to check his sources I reluctantly volunteer! :-)

Edit: and I said it first! :P
Michael Sherwin
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Michael Sherwin »

CRoberson wrote:You miss the point.

Decoding a binary and taking knowledge out of it is theft unless
permission is given.
Only if that knowledge is original. If I decode Rybka and discover that a night is worth 3 pawns then nothing was stolen.
If you are on a sidewalk and the covid goes beep beep
Just step aside or you might have a bit of heat
Covid covid runs through the town all day
Can the people ever change their ways
Sherwin the covid's after you
Sherwin if it catches you you're through
Michael Sherwin
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Michael Sherwin »

Alessandro Scotti wrote:
Michael Sherwin wrote:Strelka 1.8 is a derivitive of Fruit and Rybka and is not a clone!
I agree with this, and being as it seems a "soft" derivative it's not bound by any existing license too.
Of course in case Strelka's author needs a third expert to check his sources I reluctantly volunteer! :-)

Edit: and I said it first! :P
But, Romi and Hamsters are cousins, and families should share! :P
If you are on a sidewalk and the covid goes beep beep
Just step aside or you might have a bit of heat
Covid covid runs through the town all day
Can the people ever change their ways
Sherwin the covid's after you
Sherwin if it catches you you're through
Alessandro Scotti

Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Alessandro Scotti »

CRoberson wrote:Decoding a binary and taking knowledge out of it is theft unless permission is given.
It's not theft at all. And even if explicitly prohibited, the law might grant exceptions in some cases (e.g. in many countries you can reverse engineer a product in order to gain enough knowledge about it and write - from scratch! - a competing product).
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Denis P. Mendoza
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Denis P. Mendoza »

Michael Sherwin wrote
But, Romi and Hamsters are cousins, and families should share!
Maybe it would be nice to file/generate "bloodlines" and family trees of chess engines and their ancestry in the future. :D

At least you'll now know their pedigree. :wink:

Cheers!
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hgm
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by hgm »

Alessandro Scotti wrote:
CRoberson wrote:Decoding a binary and taking knowledge out of it is theft unless permission is given.
It's not theft at all. And even if explicitly prohibited, the law might grant exceptions in some cases (e.g. in many countries you can reverse engineer a product in order to gain enough knowledge about it and write - from scratch! - a competing product).
In most legal systems everything is allowed that is not expressly forbidden.

In such systems decompiling a binary and taking knowledge out of it is not anymore a crime than walking through the mountains and enjoying the scenery.

Only if the intellectual owner of the binary has expressly stated that you are not allowed to do that, decompiling becomes a crime. In the cases where the intellectual owner expressly allowed it, or failed to mention it, decompilation is allowed.

It seems that by stating in the license agreement of Rybka 1.0 that "it can be used without restrictions", Vas made it fair game for decompilation. Perhaps not very wise. The best Vas can do to level the playing ground is to release the source code of Rybka 1.0 under the GPL, saving us the trouble of having to decompile / disassemble...
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Daniel Mehrmann
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Daniel Mehrmann »

hgm wrote: In most legal systems everything is allowed that is not expressly forbidden.

this is clear wrong anyway. Our life and society wouldn't work. Anarchy and chaos would govern the world.

For europe we have EU law as well and also the minimum copyright stuff is ruled there. Of course its not allowed to diasembly a product.
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hgm
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by hgm »

I don't know where you get these ideas, it seems to me that you are just making this up.

An except of copyright law was just posted here in one of these recent threads, which clearly stated that in many countries disassembly of source in order to learn about the algorithm is explicitly allowed by law, even if the holder of the copyright explicitly forbids it.
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Daniel Mehrmann
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Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by Daniel Mehrmann »

hgm wrote:I don't know where you get these ideas, it seems to me that you are just making this up.

An except of copyright law was just posted here in one of these recent threads, which clearly stated that in many countries disassembly of source in order to learn about the algorithm is explicitly allowed by law, even if the holder of the copyright explicitly forbids it.

http://www.euro-copyrights.org/

http://europa.eu.int/eur-lex/pri/de/oj/ ... 100019.pdf

....there are so many links, search your yoursef (google is your friend)
AGove

Re: Fruit, Rybka, Strelka final conclusion! (I hope)

Post by AGove »

....there are so many links, search your yoursef (google is your friend)
No! Kindly show us exactly what you have found and very precisely where. Please don't just point to huge websites and tell us to Google ourselves.