Projektet Stockfish, som distribueras under GPLv3-licensen, har st\u00e4mt f\u00f6retaget ChessBase och \u00e5terkallat licensen GPL f\u00f6r anv\u00e4ndning av sin kod. Stockfish \u00e4r den starkaste av schackmotorerna som anv\u00e4nds p\u00e5 schacksajterna lichess.org och chess.com. St\u00e4mningen har l\u00e4mnats in p\u00e5 grund av inkluderingen av Stockfish-kod i en propriet\u00e4r produkt utan att \u00f6ppna k\u00e4llkoden f\u00f6r det avledda arbetet. <\/p>\n
F\u00f6retaget ChessBase \u00e4r k\u00e4nt f\u00f6r sitt schackprogram Fritz sedan 1990-talet. \u00c5r 2019 sl\u00e4ppte de motorn Fat Fritz, baserad p\u00e5 det \u00f6ppna n\u00e4tverksverket Leela Chess Zero, som i sin tur hade sina r\u00f6tter i projektet AlphaZero, som \u00f6ppnades av Google. Detta utgjorde inte en \u00f6vertr\u00e4delse av n\u00e5gon lagstiftning, \u00e4ven om utvecklarna av Leela var missn\u00f6jda med att ChessBase marknadsf\u00f6rde Fat Fritz som en oberoende produkt utan att erk\u00e4nna bidrag fr\u00e5n teamen bakom AlphaZero och LeelaZero. <\/p>\n
\u00c5r 2020 lanserade ChessBase produkten Fat Fritz 2.0, baserad p\u00e5 Stockfish 12-motorn med sin egen arkitektur av neurala n\u00e4tverk NNUE (Efficiently Updatable Neural Networks). Stockfish-teamet lyckades med hj\u00e4lp av jurister f\u00e5 tillbaka DVD-programmet Fat Fritz 2.0 fr\u00e5n f\u00f6rs\u00e4ljningsn\u00e4tverk i Tyskland, men, missn\u00f6jda med resultatet, meddelade de om \u00e5terkallandet av GPL-licensen f\u00f6r Stockfish fr\u00e5n ChessBase och st\u00e4mde i domstol. <\/p>\n
Detta \u00e4r inte f\u00f6rsta s\u00e4songen av dramat kring koden Stockfish, som kommersiella motorer l\u00e5nar utan att f\u00f6lja GPL. Tidigare intr\u00e4ffade en incident med l\u00e4ckagen av k\u00e4llkoden f\u00f6r den propriet\u00e4ra motorn Houdini 6, vilket avsl\u00f6jade att den var baserad p\u00e5 Stockfish-koden. Houdini 5 deltog i TCEC-t\u00e4vlingen och n\u00e5dde superfinalen i den nionde s\u00e4songen, men f\u00f6rlorade till slut mot Stockfish. \u00c5r 2017 lyckades n\u00e4sta version, Houdini 6, vinna mot Komodo i superfinalen av den tionde s\u00e4songen av TCEC. K\u00e4llkoder som l\u00e4cktes under 2020 avsl\u00f6jade denna oetiska bedr\u00e4geri som kr\u00e4nker en av grundpelarna f\u00f6r FOSS \u2014 GPL. <\/p>\n
Vi p\u00e5minner om att GPL-licensen m\u00f6jligg\u00f6r \u00e5terkallande av licensen hos f\u00f6r\u00f6varen och upph\u00f6rande av alla r\u00e4ttigheter hos licenstagaren som tillhandah\u00e5lls av denna licens. Enligt reglerna f\u00f6r licensupps\u00e4gning i GPLv3, om \u00f6vertr\u00e4delser f\u00f6rst uppt\u00e4cktes och \u00e5tg\u00e4rdades inom 30 dagar efter meddelande, \u00e5terst\u00e4lls r\u00e4ttigheterna till licensen, och licensen \u00e5terkallas inte helt (avtalet f\u00f6rblir of\u00f6r\u00e4ndrat). R\u00e4ttigheterna \u00e5terst\u00e4lls omedelbart \u00e4ven om \u00f6vertr\u00e4delser \u00e5tg\u00e4rdas, om r\u00e4ttighetsinnehavaren inte meddelar om \u00f6vertr\u00e4delsen inom 60 dagar. Om tidsfristen l\u00f6per ut kan \u00f6vertr\u00e4delsen av licensen tolkas som avtalsbrott, vilket kan leda till finansiella p\u00e5f\u00f6ljder i domstol. \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 […]<\/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\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Projektet Stockfish st\u00e4mde f\u00f6retaget ChessBase och \u00e5terkallade GPL-licensen | ProHoster","description":"Projektet Stockfish, som distribueras under GPLv3-licensen, st\u00e4mde f\u00f6retaget 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K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"