Fat Fritz 2 is a rip-off • page 39/40 • General Chess Discussion • lichess.org

Saying that something is a rip-off is implying an unfair price

According to GPL, all changes to a GPL item you're forking must be made public (ie- source code). That's why Chessbase quickly and quietly released the source code to their changes after this controversy started.

If this article is correct and Fat Fritz 2 is literally Stockfish 12 with the author field and some default settings changed, then the only real difference is the weights and layer count it's using. Those must be made available to download for free under GPL (and where). So anyone can just download Stockfish 12 and load the FF2 weights with very little effort. In other words, Fat Fitz 2 has an objective worth of close to 0 euro, but they are charging around 100 euro for it. Definitely an unfair price.

At least that is my understanding of GPL since I started looking into it. I'm definitely not an expert on this subject so could be wrong.

>Saying that something is a rip-off is implying an unfair price According to GPL, all changes to a GPL item you're forking must be made public (ie- source code). That's why Chessbase quickly and quietly released the source code to their changes after this controversy started. If this article is correct and Fat Fritz 2 is literally Stockfish 12 with the author field and some default settings changed, then the only real difference is the weights and layer count it's using. Those must be made available to download for free under GPL (and where). So anyone can just download Stockfish 12 and load the FF2 weights with very little effort. In other words, Fat Fitz 2 has an objective worth of close to 0 euro, but they are charging around 100 euro for it. Definitely an unfair price. At least that is my understanding of GPL since I started looking into it. I'm definitely not an expert on this subject so could be wrong.

SlowMule

#387

It’s worse than the free product it’s copying, meaning if anyone was ever to accidentally uses Fat Fritz 2 they should be payed for their wasted time.

Cool... Lichess!

Where's the skinny fritz 2?!

DragonArcher

#390

SFxFF2

SF=Stockfish

X=Defeats

FF2=Fat Fritz 2

SFxFF2 SF=Stockfish X=Defeats FF2=Fat Fritz 2

Mate in 1

mate in one

so stockfish 13 elo/nnue is stronger than Fat Fritz 2 look at this https://lichess.org/@/LianEeChad/tournaments/recent

CANYOUDOTHIS edited

#394

How Do me Download Fritz-0.2 ??????????????????????????2

DonTomaso

#395

For others who are also interested in the alternatives to CB. I found this 1½ hour review of different analysis tools. Nibbler was new to me, but my laptop doesn't have one of the fancy graphics cards required - still good to know about if you want to try Leela0.

The main conclusion seems to be that there is definitely room for improvement and new competitors when it comes to chess database and analysis programs!

https://www.youtube.com/watch?v=1Yg9DOlJKFI

Btw, I've just bought Aquarium 2021 and it's interesting to see what it can do. But setting up projects is indeed very complicated and annoying.

I would suggest that they add some premade projects for different common purposes - where you simply add which engines you want to use and the position you want checked. That would be an obvious improvement he doesn't mention in the review.

For others who are also interested in the alternatives to CB. I found this 1½ hour review of different analysis tools. Nibbler was new to me, but my laptop doesn't have one of the fancy graphics cards required - still good to know about if you want to try Leela0. The main conclusion seems to be that there is definitely room for improvement and new competitors when it comes to chess database and analysis programs! https://www.youtube.com/watch?v=1Yg9DOlJKFI Btw, I've just bought Aquarium 2021 and it's interesting to see what it can do. But setting up projects is indeed very complicated and annoying. I would suggest that they add some premade projects for different common purposes - where you simply add which engines you want to use and the position you want checked. That would be an obvious improvement he doesn't mention in the review.