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Open source chess developers warn about a commercial engine based on Stockfish

lichess.org

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Re: Open source chess developers warn about a commercial engine based on Stockfish

#51

Post by Someone »

bonzini wrote: post #40
tutfbhuf wrote: post #39

Earlier quoted context omitted.

https://github.com/official-stockfish/Stockfish/blob/master/... Stockfish _is_ currently licensed under GPLv3. Chessbase is allowed to sell a modified copy, but only under the same license and they have to provide the source.

The neural network is just data, but if it's part of the executable you need to provide the raw data that is then linked into the executable.

I think it can be argued that the set of weights of a neural network is a program, but not “the preferred form of the work for making modifications to it”.

That would mean the training set and training algorithm (and random number generator seed) would have to be distributed under the GPL, too.

Re: Open source chess developers warn about a commercial engine based on Stockfish

#52

Post by cven714 »

ChessBase is selling this Stockfish clone for €99.90. They have also disabled comments on all of their articles so far about Fat Fritz 2. Not a good look.

Related Article on Lichess (which is also open source) about Fat Fritz 2: https://lichess.org/blog/YCvy7xMAACIA8007/fat-fritz-2-is-a-r...

Re: Open source chess developers warn about a commercial engine based on Stockfish

#54

Post by chongli »

jojobas wrote: post #53

Would it finally be the case where a GPL violator is taken to court?

Hopefully. I also hope this gets spread throughout the online chess community so that ChessBase gets their name dragged through the mud, as they rightfully should, for this blatant plagiarism.

Taking the work of others, erasing their name and inserting your own, is the kind of crap we expect from lousy cheaters in high school, not businesses who want to establish themselves in a market based on a centuries-old global institution.

Re: Open source chess developers warn about a commercial engine based on Stockfish

#55

Post by thom »

There is no way this is the outcome, but I’d love to live in the world where ChessBase get a proper commercial license to Stockfish to sell to people who don’t want to click three buttons to set it up themselves, in exchange for permanently opening up their database to the public.

Re: Open source chess developers warn about a commercial engine based on Stockfish

#56

Post by dimitrios1 »

chongli wrote: post #54
jojobas wrote: post #53

Would it finally be the case where a GPL violator is taken to court?

Hopefully. I also hope this gets spread throughout the online chess community so that ChessBase gets their name dragged through the mud, as they rightfully should, for this blatant plagiarism. Taking the work of others, erasing their name and inserting your own, is the kind of crap we expect from lousy cheaters in high school, not businesses who want to establish themselves in a market based on a centuries-old global…

> Taking the work of others, erasing their name and inserting your own, is the kind of crap we expect from lousy cheaters in high school,

Or Amazon Web Services

Re: Open source chess developers warn about a commercial engine based on Stockfish

#58

Post by cambalache »

cven714 wrote: post #52

ChessBase is selling this Stockfish clone for €99.90. They have also disabled comments on all of their articles so far about Fat Fritz 2. Not a good look. Related Article on Lichess (which is also open source) about Fat Fritz 2: https://lichess.org/blog/YCvy7xMAACIA8007/fat-fritz-2-is-a-r...

They are a sketchy company, from the over-zealousness to defend their "IP" to the price they demand for their yearly software, to the creepy vibe their articles about young female players have. So no sympathy from me, go stockfish.
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