ChessBase and Stockfish end their legal dispute
stockfishchess.org
stockfishchess.org
1. One more year in which ChessBase cannot use stockfish.
2. After a year, they may use it, provided they are in compliance with GPL-3
3. ChessBase will never again distribute stockfish without obeying the GPL-3
4. If they don't, the fines and penalties go to the Free Software Foundation Europe
5. Notices on Chessbase website for a year about this settlement
6. Cooordinated amicable press release
7. Chessbase has to have a "Free Software Compliance Officer"
8. From now on, Chessbase must make truthful comparisons agains stockfish, must open source neural weights, must certify compliance with GPT-3.
9. This lawsuit is over and resolved
10. Everyone pays their own legal bills.
Full text, two pages:
This is the surprising one to me. Making Chessbase pay for Stockfish's incurred legal fees not only seems justified but would help deter future infringement of open source licences.
That often leads a dirty game. Litigation, especially license and IP related litigation, is often all about the meta, the strategy games and ulterior or adjacent motives.
The legal action itself, with associated costs and stresses can be scarier than the judgment. Deterrence or establishing legal cases and such can be the motive. Legal costs can be driven up to strategically raise stakes. Etc. It's nice when occasionally the system can be used to settle disputes or do justice.
Why not? It's not like ChessBase ever contributed anything to StockFish.
> It’s possible ChessBase will sadly lose many customers because of the GPL (though it shouldn’t be so) because some people in our industry and especially companies are allergic to it.
ChessBase sells B2C chess engines, not libraries. Their customer base is either pro-GPL or don't care about it.
Did you mean "must certify compliance with GPL-3." ?
These people really are saints.
Anyway, although ChessBase has had some transgressions in the past, it does appear that they have turned over a new leaf so this seems good for free software all around.
It's sad though there is no consequences for ChessBase. They got a double shot: use someone's else code ignoring the licence and the worst that could happen to you if you're caught is you comply with the license. Not a happy precedent this one.
Might as well create a crawler bot on github and slurp up all the GPL/AGPL for your new AI-coding startup, iterate fast, make profit, then pay a pittance in legal fees and a small "We're sorry".
This has already been done.[1]
Did the sued company release their software under GPL?
ChessBase (1) are no longer offering for sale "Fat Fritz 2" and "Houdini" (which contain GPL code from Stockfish), (2) undertake only ever to distribute those products or any others based on Stockfish under the terms of the GPL (which in particular means making source code available), and (3) are going to have a "Free Software Compliance Officer" and a website on which they list products of theirs that make use of free and open-source software, and provide whatever downloads they are required to. Their licence to distribute Stockfish code at all gets reinstated in one year; until then the only thing they're allowed to do is to provide downloads to customers who have already bought Fat Fritz 2 or Houdini, on GPL-compliant terms.