{"id":100802,"date":"2021-07-20T22:22:46","date_gmt":"2021-07-20T20:22:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-stockfish-podal-isk-protiv-kompanii-chessbase-i-otozval-liczenziyu-gpl"},"modified":"2021-07-20T22:22:46","modified_gmt":"2021-07-20T20:22:46","slug":"proekt-stockfish-podal-isk-protiv-kompanii-chessbase-i-otozval-liczenziyu-gpl","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/proekt-stockfish-podal-isk-protiv-kompanii-chessbase-i-otozval-liczenziyu-gpl","title":{"rendered":"Il progetto Stockfish ha intentato una causa contro la ChessBase e ha revocato la licenza GPL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Il progetto Stockfish, distribuito sotto la licenza GPLv3, ha citato in giudizio l'azienda ChessBase, ritirando la licenza GPL per l'uso del proprio codice. Stockfish \u00e8 il pi\u00f9 potente dei motori di scacchi utilizzati sui servizi scacchistici lichess.org e chess.com. La causa \u00e8 stata intentata a causa dell'inclusione del codice di Stockfish in un prodotto proprietario senza la pubblicazione dei codici sorgente dell'opera derivata.    <\/p>\n<p>L'azienda ChessBase \u00e8 nota per il suo programma di scacchi Fritz fin dagli anni '90. Nel 2019 ha rilasciato il motore Fat Fritz, basato su una rete neurale del motore open-source Leela Chess Zero, a sua volta fondato sui lavori del progetto AlphaZero, rilasciato da Google. Questo non costituiva una violazione di alcuna legge, anche se gli sviluppatori di Leela erano scontenti del fatto che ChessBase posizionasse Fat Fritz come uno sviluppo autonomo, senza riconoscere i meriti dei team AlphaZero e LeelaZero.     <\/p>\n<p>Nel 2020, l'azienda ChessBase ha lanciato il prodotto Fat Fritz 2.0, basato sul motore Stockfish 12, che presenta una propria architettura di rete neurale NNUE (Efficiently Updatable Neural Networks). Il team di Stockfish, con l'assistenza di avvocati, \u00e8 riuscito a ottenere il ritiro dai punti vendita DVD del programma Fat Fritz 2.0 in Germania, ma non soddisfatto del risultato, ha dichiarato il ritiro della licenza GPL su Stockfish da ChessBase e ha intentato una causa in tribunale.    <\/p>\n<p>Non \u00e8 la prima stagione di polemiche intorno al codice di Stockfish, che i motori commerciali prendono in prestito ignorando la GPL. Ad esempio, in precedenza c'\u00e8 stato un caso di fuga dei codici sorgente del motore proprietario Houdini 6, da cui \u00e8 emerso che \u00e8 basato sul codice di Stockfish. Houdini 5 ha partecipato alla competizione TCEC e ha raggiunto il superfinale della nona stagione, ma alla fine ha ceduto a Stockfish. Nel 2017, la versione successiva Houdini 6 \u00e8 riuscita a vincere contro Komodo il superfinale della decima stagione di TCEC. I codici sorgente, trapelati nel 2020, hanno rivelato questo inganno infame, che calpesta uno dei principi fondamentali del FOSS \u2014 la GPL.    <\/p>\n<p>Ricordiamo che la licenza GPL prevede la possibilit\u00e0 di revoca della licenza nei confronti del trasgressore e cessazione di tutti i diritti concessi al licenziatario da questa licenza. In conformit\u00e0 con le regole di cessazione della licenza adottate nella GPLv3, se le violazioni sono state rilevate per la prima volta e sanate entro 30 giorni dalla notifica, i diritti sulla licenza vengono ripristinati e la licenza non viene completamente revocata (il contratto rimane non violato). I diritti vengono restituiti immediatamente anche in caso di rimozione delle violazioni, se il titolare dei diritti non ha notificato la violazione entro 60 giorni. Se i termini sono scaduti, la violazione della licenza pu\u00f2 essere interpretata come violazione del contratto, per la quale il tribunale pu\u00f2 richiedere sanzioni finanziarie.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55523\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u043e\u0435\u043a\u0442 Stockfish, \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u044b\u0439 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv3, \u043f\u043e\u0434\u0430\u043b \u0432 \u0441\u0443\u0434 \u043d\u0430 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044e ChessBase, \u043e\u0442\u043e\u0437\u0432\u0430\u0432 \u0443 \u0442\u043e\u0439 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044e GPL \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430. Stockfish \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0441\u0438\u043b\u044c\u043d\u0435\u0439\u0448\u0438\u0439 \u0438\u0437 \u0448\u0430\u0445\u043c\u0430\u0442\u043d\u044b\u0445 \u0434\u0432\u0438\u0436\u043a\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445\u0441\u044f \u043d\u0430 \u0448\u0430\u0445\u043c\u0430\u0442\u043d\u044b\u0445 \u0441\u0435\u0440\u0432\u0438\u0441\u0430\u0445 lichess.org \u0438 chess.com. \u0418\u0441\u043a \u043f\u043e\u0434\u0430\u043d \u0432 \u0441\u0432\u044f\u0437\u0438 \u0441 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u043a\u043e\u0434\u0430 Stockfish \u0432 \u043f\u0440\u043e\u043f\u0440\u0438\u0435\u0442\u0430\u0440\u043d\u044b\u0439 \u043f\u0440\u043e\u0434\u0443\u043a\u0442 \u0431\u0435\u0437 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u044f \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0445 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u044b. \u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f ChessBase, \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100802","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u043e\u0435\u043a\u0442 Stockfish, \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u044b\u0439 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv3, \u043f\u043e\u0434\u0430\u043b \u0432 \u0441\u0443\u0434 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