Projekt Stockfish, kter\u00fd je distribuov\u00e1n pod licenc\u00ed GPLv3, podal \u017ealobu proti spole\u010dnosti ChessBase a odebral j\u00ed licenci GPL na vyu\u017e\u00edv\u00e1n\u00ed sv\u00e9ho k\u00f3du. Stockfish je nejsiln\u011bj\u0161\u00ed \u0161achov\u00fd engine, kter\u00fd se pou\u017e\u00edv\u00e1 na \u0161achov\u00fdch platform\u00e1ch lichess.org a chess.com. \u017daloba byla pod\u00e1na kv\u016fli zahrnut\u00ed k\u00f3du Stockfish do propriet\u00e1rn\u00edho produktu bez zp\u0159\u00edstupn\u011bn\u00ed zdrojov\u00fdch text\u016f odvozen\u00e9 pr\u00e1ce. <\/p>\n
Spole\u010dnost ChessBase je zn\u00e1m\u00e1 sv\u00fdm \u0161achov\u00fdm programem Fritz od 90. let. V roce 2019 uvedla na trh engine Fat Fritz, zalo\u017een\u00fd na neuronov\u00e9 s\u00edti otev\u0159en\u00e9ho enginu Leela Chess Zero, kter\u00fd byl odvozen od projektu AlphaZero, otev\u0159en\u00e9ho Google. To nebylo poru\u0161en\u00edm \u017e\u00e1dn\u00e9ho z\u00e1kona, a\u010dkoliv v\u00fdvoj\u00e1\u0159i Leela byli nespokojeni s t\u00edm, \u017ee ChessBase prezentovala Fat Fritz jako samostatn\u00fd v\u00fdvoj, neuzn\u00e1vaj\u00edc p\u0159\u00ednosy t\u00fdm\u016f AlphaZero a LeelaZero. <\/p>\n
V roce 2020 spole\u010dnost ChessBase vydala produkt Fat Fritz 2.0, zalo\u017een\u00fd na enginu Stockfish 12, jen\u017e m\u00e1 vlastn\u00ed architekturu neuronov\u00e9 s\u00edt\u011b NNUE (Efficiently Updatable Neural Networks). T\u00fdm Stockfish za pomoci pr\u00e1vn\u00edk\u016f dok\u00e1zal zajistit sta\u017een\u00ed programu Fat Fritz 2.0 z maloobchodn\u00edch s\u00edt\u00ed DVD v N\u011bmecku, ale nespokojeni s v\u00fdsledkem ozn\u00e1mili st\u00e1hnut\u00ed licence GPL na Stockfish u ChessBase a podali \u017ealobu. <\/p>\n
Nen\u00ed to poprv\u00e9, co kolem k\u00f3du Stockfish panuje drama, kdy\u017e komer\u010dn\u00ed enginy bezohledn\u011b p\u0159eb\u00edraj\u00ed k\u00f3d s ignorov\u00e1n\u00edm GPL. Nap\u0159\u00edklad d\u0159\u00edve do\u0161lo k incidentu s \u00fanikem zdrojov\u00fdch text\u016f propriet\u00e1rn\u00edho enginu Houdini 6, ze kter\u00e9ho vyplynulo, \u017ee je zalo\u017een na k\u00f3du Stockfish. Houdini 5 se z\u00fa\u010dastnil sout\u011b\u017ee TCEC a dostal se do superfin\u00e1le dev\u00e1t\u00e9 sez\u00f3ny, ale nakonec podlehl Stockfish. V roce 2017 n\u00e1sleduj\u00edc\u00ed verze Houdini 6 dok\u00e1zala porazit Komodo v superfin\u00e1le des\u00e1t\u00e9 sez\u00f3ny TCEC. Zdrojov\u00e9 texty, kter\u00e9 unikly v roce 2020, odhalily tento ne\u010destn\u00fd podvod, kter\u00fd poru\u0161uje jeden z z\u00e1kladn\u00edch kamen\u016f FOSS \u2014 GPL. <\/p>\n
P\u0159ipom\u00edn\u00e1me, \u017ee licence GPL umo\u017e\u0148uje odvol\u00e1n\u00ed licence u poru\u0161itele a ukon\u010den\u00ed v\u0161ech pr\u00e1v licenci\u00e1ta, kter\u00e1 mu byla touto licenc\u00ed poskytnuta. V souladu s pravidly pro ukon\u010den\u00ed licence p\u0159ijat\u00fdmi v GPLv3, pokud byla poru\u0161en\u00ed zji\u0161t\u011bna poprv\u00e9 a odstran\u011bna do 30 dn\u00ed od ozn\u00e1men\u00ed, pr\u00e1va na licenci se obnovuj\u00ed a licence nen\u00ed pln\u011b odvol\u00e1na (smlouva z\u016fst\u00e1v\u00e1 neporu\u0161ena). Pr\u00e1va jsou obnovena tak\u00e9 okam\u017eit\u011b v p\u0159\u00edpad\u011b odstran\u011bn\u00ed poru\u0161en\u00ed, pokud nositel pr\u00e1v neozn\u00e1mil poru\u0161en\u00ed do 60 dn\u00ed. Pokud lh\u016fty vypr\u0161ely, m\u016f\u017ee b\u00fdt poru\u0161en\u00ed licence interpretov\u00e1no jako poru\u0161en\u00ed smlouvy, za kter\u00e9 lze u soudu po\u017eadovat finan\u010dn\u00ed n\u00e1hrady. \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\udd47Projekt Stockfish podal \u017ealobu proti spole\u010dnosti ChessBase a odvolal licenci GPL | ProHoster","description":"Projekt Stockfish, \u0161\u00ed\u0159en\u00fd pod licenc\u00ed GPLv3, podal \u017ealobu proti 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"