Caruana
Radjabov
R7 LIVE
Liren
Firouzja
R7 LIVE
Duda
Nakamura
R7 LIVE
Rapport
Nepo
R7 LIVE
Nepo
Duda
1
0
R6
Nakamura
Liren
1/2
1/2
R6
Firouzja
Caruana
0
1
R6
Radjabov
Rapport
1/2
1/2
R6
Nakamura
Nepo
1/2
1/2
R5
Firouzja
Duda
1/2
1/2
R5
Radjabov
Liren
1/2
1/2
R5
Caruana
Rapport
1/2
1/2
R5
Duda
Nepo
R14 LIVE
Liren
Nakamura
R14 LIVE
Caruana
Firouzja
R14 LIVE
Rapport
Radjabov
R14 LIVE
Radjabov
Caruana
R13 LIVE
Firouzja
Liren
R13 LIVE
Nakamura
Duda
R13 LIVE
Nepo
Rapport
R13 LIVE
Nepo
Nakamura
R12 LIVE
Duda
Firouzja
R12 LIVE
Liren
Radjabov
R12 LIVE
Rapport
Caruana
R12 LIVE
Caruana
Liren
R11 LIVE
Radjabov
Duda
R11 LIVE
Firouzja
Nepo
R11 LIVE
Nakamura
Rapport
R11 LIVE
Nakamura
Firouzja
R10 LIVE
Nepo
Radjabov
R10 LIVE
Duda
Caruana
R10 LIVE
Rapport
Liren
R10 LIVE
Liren
Duda
R9 LIVE
Caruana
Nepo
R9 LIVE
Radjabov
Nakamura
R9 LIVE
Firouzja
Rapport
R9 LIVE
Firouzja
Radjabov
R8 LIVE
Nakamura
Caruana
R8 LIVE
Nepo
Liren
R8 LIVE
Rapport
Duda
R8 LIVE
Caruana
Radjabov
R7 LIVE
Liren
Firouzja
R7 LIVE
Duda
Nakamura
R7 LIVE
Rapport
Nepo
R7 LIVE
Nepo
Duda
1
0
R6
Nakamura
Liren
1/2
1/2
R6
Firouzja
Caruana
0
1
R6
Radjabov
Rapport
1/2
1/2
R6
Nakamura
Nepo
1/2
1/2
R5
Firouzja
Duda
1/2
1/2
R5
Radjabov
Liren
1/2
1/2
R5
Caruana
Rapport
1/2
1/2
R5
Liren
Caruana
1/2
1/2
R4
Duda
Radjabov
1/2
1/2
R4
Nepo
Firouzja
1
0
R4
Rapport
Nakamura
1/2
1/2
R4
Firouzja
Nakamura
1/2
1/2
R3
Radjabov
Nepo
1/2
1/2
R3
Caruana
Duda
1/2
1/2
R3
Liren
Rapport
1/2
1/2
R3
Duda
Liren
1/2
1/2
Nepo
Caruana
1/2
1/2
Nakamura
Radjabov
1
0
Rapport
Firouzja
1/2
1/2
Radjabov
Firouzja
1/2
1/2
Caruana
Nakamura
1
0
Liren
Nepo
0
1
Duda
Rapport
1/2
1/2
Aronian
MVL
0
1
TB 1.3
MVL
So
1
0
TB 1.2
So
Aronian
1
0
TB1.1
Dominguez
So
1/2
1/2
R9
Firouzja
MVL
0
1
R9
Deac
Caruana
1/2
1/2
R9
Rapport
Nepo
1/2
1/2
R9
Aronian
Mamedyarov
1/2
1/2
R9
Nepo
Aronian
1/2
1/2
R8
Caruana
Rapport
1/2
1/2
R8
MVL
Deac
1/2
1/2
R8
So
Firouzja
1/2
1/2
R8
Mamedyarov
Dominguez
1/2
1/2
R8
Firouzja
Dominguez
1
0
R7
Deac
So
1/2
1/2
R7
Rapport
MVL
0
1
R7
Aronian
Caruana
1/2
1/2
R7
Nepo
Mamedyarov
0
1
R7
Caruana
Nepo
1/2
1/2
R6
MVL
Aronian
0
1
R6
So
Rapport
1/2
1/2
R6
Dominguez
Deac
1
0
R6
Mamedyarov
Firouzja
1/2
1/2
R6
Deac
Firouzja
1/2
1/2
R5
Rapport
Dominguez
1/2
1/2
R5
Aronian
So
1/2
1/2
R5
Nepo
MVL
1/2
1/2
R5
Caruana
Mamedyarov
1
0
R5
MVL
Caruana
1
0
R4
So
Nepo
1
0
R4
Dominguez
Aronian
0
1
R4
Firouzja
Rapport
1/2
1/2
R4
Mamedyarov
Deac
1/2
1/2
R4
Rapport
Deac
0
1
R3
Aronian
Firouzja
1/2
1/2
R3
Nepo
Dominguez
1/2
1/2
R3
Caruana
So
1/2
1/2
R3
MVL
Mamedyarov
1/2
1/2
R3
So
MVL
1/2
1/2
R2
Dominguez
Caruana
1/2
1/2
R2
Firouzja
Nepo
0
1
R2
Deac
Aronian
1/2
1/2
R2
Mamedyarov
Rapport
1/2
1/2
R2
Aronian
Rapport
1/2
1/2
R1
Nepo
Deac
1/2
1/2
R1
Caruana
Firouzja
1/2
1/2
R1
MVL
Dominguez
1/2
1/2
R1
So
Mamedyarov
1
0
R1
MVL
Wang
1
0
Ding
Nepo
1
0
Giri
Alekseenko
0
1
Caruana
Grischuk
1/2
1/2
Grischuk
Giri
1
0
Ding
Alekseenko
1
0
MVL
Nepo
1/2
1/2
Caruana
Wang
1
0
Nepo
Wang
0
1
MVL
Alekseenko
1
0
Ding
Grischuk
1
Caruana
Giri
0
1
Ding
Giri
0
1
MVL
Grischuk
0
1
Wang
Alekseenko
1/2
1/2
Caruana
Nepo
1/2
1/2
ALekseenko
Nepo
0
1
Grischuk
Wang
1/2
1/2
Giri
MVL
1/2
1/2
Ding
Caruana
1/2
1/2
MVL
Ding Liren
1/2
1/2
Wang
Giri
0
1
Nepo
Grischuk
1/2
1/2
Caruana
Alekseenko
1/2
1/2
Grischuk
Alekseenko
0
1
Giri
Nepo
1/2
1/2
Ding
Wang
1/2
1/2
MVL
Caruana
0
1
Grischuk
Giri
1/2
1/2
Alekseenko
Ding
1/2
1/2
Nepo
MVL
0
1
Wang
Caruana
1/2
1/2
Caruana
MVL
1/2
1/2
Leading Stockfish developers have filed suit against ChessBase to enforce their license termination claiming Chessbase has “repeatedly violated central obligations of the GPLv3 license”. The court hearing in the case Tord Romstad and Stéphane Nicolet vs. ChessBase GmbH will take place on Monday, July 4th, and Stockfish calls all interested parties to attend the hearing.
Read more: Stockfish wins the TCEC Season 22 Superfinal by 19 points / All computer chess news
Stockfish announcement for Public Hearing:
“As announced nearly one year ago, leading Stockfish developers have filed suit against ChessBase to enforce their license termination after repeated copyright violation by ChessBase. The court hearing in the case Tord Romstad and Stéphane Nicolet vs. ChessBase GmbH will take place soon.
In recent months, we have presented to the court detailed evidence that the ChessBase products Houdini 6 and Fat Fritz 2 have copied extensive parts of the Stockfish code base authored by the plaintiffs and that ChessBase repeatedly violated central obligations of the GPLv3 license. GPLv3 requires that the user is informed of their rights, has access to the corresponding sources, and has the right to reproduce, modify and distribute GPLed programs royalty-free.
We have applied to the court to order ChessBase to cease distributing Stockfish in all forms, including Fat Fritz 2 and Houdini 6, as the GPLv3 license has been terminated permanently according to section 8, and to cover our legal expenses.
The hearing is scheduled to take place on Monday, July 4th, 2022, 11am in Munich (Germany):
Landgericht München I
Sitzungssaal 101, 1. Stock,
Lenbachplatz 7
D-80316 München
We inform interested parties that the public is permitted to attend and will update on the progress made.
The Stockfish team”
Stockfish announced the lawsuit against ChessBase nearly a year ago:
“The Stockfish project strongly believes in free and open-source software and data. Collaboration is what made this engine the strongest chess engine in the world. We license our software using the GNU General Public License, Version 3 (GPL) with the intent to guarantee all chess enthusiasts the freedom to use, share and change all versions of the program.
Unfortunately, not everybody shares this vision of openness. We have come to realize that ChessBase concealed from their customers Stockfish as the true origin of key parts of their products (see also earlier blog posts by us and the joint Lichess, Leela Chess Zero, and Stockfish teams). Indeed, few customers know they obtained a modified version of Stockfish when they paid for Fat Fritz 2 or Houdini 6 – both Stockfish derivatives – and they thus have good reason to be upset. ChessBase repeatedly violated central obligations of the GPL, which ensures that the user of the software is informed of their rights. These rights are explicit in the license and include access to the corresponding sources, and the right to reproduce, modify and distribute GPLed programs royalty-free.
In the past four months, we, supported by a certified copyright and media law attorney in Germany, went through a long process to enforce our license. Even though we had our first successes, leading to a recall of the Fat Fritz 2 DVD and the termination of the sales of Houdini 6, we were unable to finalize our dispute out of court. Due to Chessbase’s repeated license violations, leading developers of Stockfish have terminated their GPL license with ChessBase permanently. However, ChessBase is ignoring the fact that they no longer have the right to distribute Stockfish, modified or unmodified, as part of their products.
Thus, to enforce the consequences of the license termination, we have filed a lawsuit. This lawsuit is broadly supported by the team of maintainers and developers of Stockfish. We believe we have the evidence, the financial means and the determination to bring this lawsuit to a successful end. We will provide an update to this statement once significant progress has been made.
We would like to thank our fans for their support, and encourage them to download and use the official version of Stockfish that we enjoy developing and sharing freely.
The Stockfish team“
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