Aikin Stockfish, wanda aka rarraba a ƙarƙashin lasisin GPLv3, ya kai ƙarar ChessBase, tare da soke lasisin GPL don amfani da lambar sa. Stockfish shine injin chess mafi ƙarfi da ake amfani dashi akan sabis ɗin chess lichess.org da chess.com. An shigar da karar ne saboda shigar da lambar Stockfish a cikin samfurin mallakar mallaka ba tare da buɗe lambar tushe na aikin haɓaka ba.
ChessBase an san shi don shirin Fritz Chess tun daga 1990s. A cikin 2019, ta fito da injin Fat Fritz, dangane da hanyar sadarwa ta jijiyoyi na injin Leela Chess Zero mai buɗewa, wanda a lokaci ɗaya ya dogara ne akan ci gaban aikin AlphaZero da Google ya buɗe. Wannan bai saba wa kowace doka ba, kodayake masu haɓaka Leela ba su ji daɗin cewa ChessBase ya sanya Fat Fritz a matsayin ci gaba mai zaman kansa ba, ba tare da sanin cancantar ƙungiyoyin AlphaZero da LeelaZero ba.
A cikin 2020, ChessBase ya fito da Fat Fritz 2.0, dangane da injin Stockfish 12, wanda ke da tsarin gine-ginen cibiyar sadarwar jijiyar kansa NNUE (ƎUIN, Cibiyoyin Sadarwar Jijiya Mai Ingantawa). Tawagar Stockfish, tare da taimakon lauyoyi, sun sami damar samun DVD tare da shirin Fat Fritz 2.0 a Jamus da aka janye daga sarƙoƙi, amma, ba su gamsu da sakamakon ba, sun sanar da soke lasisin GPL na Stockfish daga ChessBase, kuma shigar da kara.
Wannan ba shine farkon lokacin wasan kwaikwayo da ke kewaye da lambar Stockfish ba, wanda injunan kasuwanci ke aro yayin yin watsi da GPL. Alal misali, a baya an sami wani abin da ya faru tare da zubar da lambar tushe na injiniyar Houdini 6, wanda daga abin da ya bayyana a fili cewa ya dogara ne akan lambar Stockfish. Houdini 5 ya fafata a gasar TCEC kuma ya kai ga gasar Grand Final na Season 2017, amma a karshe ya sha kashi a hannun Stockfish. A cikin 6, nau'in Houdini 2020 na gaba ya sami damar cin nasarar TCEC Season XNUMX Grand Final akan Komodo. Lambar tushe, wacce aka leka a cikin XNUMX, ta bayyana wannan mummunar yaudarar da ta keta ɗaya daga cikin ginshiƙan FOSS - GPL.
Bari mu tuna cewa lasisin GPL ya ba da damar yiwuwar soke lasisin mai keta da kuma dakatar da duk haƙƙoƙin mai lasisin da aka ba shi ta wannan lasisin. Dangane da ka'idojin dakatar da lasisi da aka karɓa a cikin GPLv3, idan an gano cin zarafi a karon farko kuma an kawar da su a cikin kwanaki 30 daga ranar sanarwar, an dawo da haƙƙin lasisi kuma ba a soke lasisin gaba ɗaya ba (kwangilar ta ci gaba) . Ana dawo da haƙƙoƙin nan da nan kuma a yayin da aka kawar da cin zarafi, idan mai haƙƙin mallaka bai sanar da cin zarafin ba a cikin kwanaki 60. Idan kwanakin ƙarshe sun ƙare, to, za a iya fassara cin zarafin lasisi a matsayin cin zarafi na kwangila, wanda za a iya samun hukuncin kisa daga kotu.
source: budenet.ru