Changes

a German former computer chess programmer, and author of the [[Chess Engine Communication Protocol]] and [[UCI]] compatible chess engines [[BigLion]], [[Taktix]], the engine [[ArcBishop]] for [[Games#ChessVariants|10x8 chess variants]], the [[GUI|graphical chess user interface]] [[ChessGUI]] and the tool [[FindDraw]] to detect [[Draw|draws]] in [[Portable Game Notation|PGN]] files. On March 28, 2016, Matthias announced his retirement from chess programming and the end of the ChessGUI project <ref> [http://www.talkchess.com/forum/viewtopic.php?t=59666 no more ChessGUI] by [[Matthias Gemuh]], [[CCC]], March 28, 2016</ref>. He died on 28th September 2021<ref>[https://www.facebook.com/IPOA.Global/posts/on-tuesday-28th-of-september-2021-ambazonia-and-africa-as-a-whole-lost-a-genius-/388546742936227/] by IPOA - Indigenous People of Ambazonia, September 28, 2021</ref>.