Stockfish chess diable timers6/12/2023 ChessBase has now acknowledged the value and potential of open source software, and Stockfish in particular, and made a clear commitment to respecting the Free Software principles. We feel that this is in the spirit of Free Software and to the benefit of the community. Nevertheless, in one year from now, Tord and Stéphane will reinstate ChessBase’s license. Existing customers can continue to use the software, and, if ChessBase provides a download in a GPL compliant way, download an already purchased copy. This infringement is not without consequences, and in the near future ChessBase will no longer sell products containing Stockfish code, while informing their customers of this fact with an appropriate notice on their web pages. These rights include the right to reproduce, modify and distribute GPLed programs royalty-free. Their customers have not received the necessary information, namely the text of the GPL license covering these programs and the corresponding source code of these programs, to exercise the rights granted by the GPL. We are pleased to announce that we have found an agreement (PDF in German and English) that strengthens the Stockfish project in its aim to deliver the world’s number #1 chess engine as Free Software and that allows ChessBase to distribute our software in the future.įat Fritz 2 and Houdini 6 are based on Stockfish, and ChessBase infringed on the license by not distributing these products as Free Software in accordance with the GPL. 42 0 9765/21) to enforce the GNU General Public License v3 (GPL) license termination provision, claiming repeated violation of the license conditions by ChessBase with their products Fat Fritz 2 and Houdini 6. More than one year ago, leading developers of the chess engine Stockfish, Tord Romstad and Stéphane Nicolet, with broad support from the development community, filed suit against ChessBase GmbH before the District Court Munich I (Az.
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