ChessBase is plainly and straightforwardly disregarding the GPL permit, so I wouldn't believe in the event that Group Stockfish DIDN'T win.

The primary "issue" I believe is whether there is truly a method for suing for harm, or the outcome will simply be a "Presently you Truly must quit conveying it" coming in, with CB getting to stash all that they've defrauded up until this point

Maybe the primary harm caused to CB after this will/ought to be various individuals having less upright predicaments about procuring their items by means of dodgy Russian locales, as opposed to Amazon

Technical speaking its not a complete recreation since Stockfish 14 uses both Lc0 genererated data and Stockfish vs Stockfish generated data while Fat Fritz 2 uses mainly Lc0 data, with the Fat Fritz 1 network further trained plus a few data from top level human games where one can argue if human games are improvments or not..

The idea is a bit more complicated than one can think. Stockfish original  network was based on pure Stockfish vs Stockfish games and using Lc0 data is using data created by an other engine. Its not uniqe either. As I understand there are even Lc0 clones that only learned from other engines vs other engines matches. And some Lc0 clones based on human games at Lichess.

Stockfish Team first thougt of larger network as a no gain approach so its not that simple. A larger network and combined with Lc0 data might have been created anyway but no one knows for shure.

I think that CB was absolutely wrong but Bragesjo is on point that Stockfish 14 does use the FF2 ideas of larger net and LcO based data to create that net. Irony at the least.

https://www.chess.com/news/view/stockfish-developers-sue-chessbase-claiming-copy... Peter Doggers put up a text with the odd Chessbase quote

"One can righteously criticize the articles about Fat Fritz on Chessbase.com which constituted an unacceptable belittlement of Stockfish. The reverse belittlement of Albert's innovations by SF does not balance this, even if they now seem to follow his path with SF 14."

Ha-ha-ha.

nocteus wrote on 07/22/21 at 17:17:15:

The first thing to realize is that publishing something (open source or closed source or other methods) does not negate your copyright. In fact copyright only applies to published works, it's the whole point of copyright to encourage publication by allowing the author to retain the rights. The second thing to realize is that you as copyright holder have the right to charge for use, and can waive that charge ("free" as in beer) under certain conditions. That's where it gets complicated, because everybody understands and agrees with the free part, but they don't understand and agree with the conditions part. So in effect by not complying with the conditions, the user is violating not the copyright itself but the license which governs the free part.

Not giving any details because, first, the GPL is controversial, and second, I am not a lawyer. In particular the GNU General Public License (GPL) places conditions on the use of the software, and thereby on the user of the software, which the average person is going to find strange. As TonyRo points out, people frequently ignore the conditions, but they do NOT have the right to ignore those conditions. It is your right as copyright holder to enforce those conditions.

It wouldn't surprise me if the Stockfish devs have some backing from free-software lawyers with an interest in the case, pour encourager les autres. There is also the interesting point that by waiting to file, they have allowed ChessBase to ring up more sales, which may mean greater damages to collect. One thing is clear. If they did not sue, history shows ChessBase was just going to do the same thing again in the future.

Bibs wrote on 07/22/21 at 11:48:35:

Fischer Random Chess so nothing to do with computer chess. I guess it is still not well known as FRC is despite of being around for decades not popular at all.

What is FRC?

Worth noting that not all here are necessarily massively knowledgeable about computer chess.

Federal Republic of Chelsea? I’ve no idea.

Well, bragesjo - illegal or unethical. That’s what the lawsuit is about, ultimately isn’t it? Simply dirty and unethical, or illegal? I’m not sure it’s you who’s deciding. I’d take a punt on ‘illegal’, but dunno if one can bet on lawsuits.

bragesjo wrote on 07/22/21 at 07:46:39:

ChessBase is clearly and openly violating the GPL license, so I would be surprised if Team Stockfish DIDN'T win.

The main "issue" I think is whether there is actually a way to sue for damages, or the result will just be a "Now you REALLY gotta stop distributing it" coming in, with CB getting to pocket everything they've scammed so far

Perhaps the main damage caused to CB after this will/should be a number of people having fewer moral quandaries about acquiring their products via dodgy russian sites, rather than Amazon..

If one does not have a Fritz interface program one buys it else no point.

Or else if one does not know how to install engines. I had to help a friend to install Stockfish in hes Fritz program

Extremly unetical yes but illegal no. I would be surprised if they win.

CB is finally getting its comeuppance for selling an SF derivate and pretending it's their own work 

https://stockfishchess.org/blog/2021/our-lawsuit-against-chessbase/
( Original statement, in case you missed/forgot the happenings:
- https://stockfishchess.org/blog/2021/statement-on-fat-fritz-2/
- https://lichess.org/blog/YCvy7xMAACIA8007/fat-fritz-2-is-a-rip-off )

Albert Silver, the """developer""" who first copied Leela, then followed up by copying SF12, and proceeded to sell both of those at a ludicrous pricepoint, without anything close to proper credit being given, might finally learn that there is more to being an engine author than thievery and scamming people.

Amusing also, that they were even still selling Houdini 6 (yet another Stockfish reskin) in their shop, again at full price of course.. 

The license breaches were obvious, and their unabashed greed left more than just a sour taste in the mouth of the entire open source chess community. I shall hope they bleed