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a Belgian computer scientist <ref>[https://www.facebook.com/johan.havegheer Johan 'Jootje' Havegheer] at [https://en.wikipedia.org/wiki/Facebook Facebook]</ref>, computer chess aficionado and journalist, early [[WinBoard]] promoter, tester and operator of various programs, notably [[Ant]] <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=18&t=30320 Some news about H. Secelle (author of Bionic)] by [[Johan Havegheer]], [[Computer Chess Forums|Winboard Forum]], September 08, 1999</ref> and [[Ruffian]] <ref>[http://old.csvn.nl/partic03.html Participants 23rd Open Dutch Computer-Chess Championship 18, 19, 25, 26 Oct. 2003; Leiden, Netherlands] old [[CSVN]] site</ref>. He wrote articles and reports for [[Computerschaak]] <ref>[http://old.csvn.nl/inhoud.html Inhoud Computerschaak vanaf 1996]</ref> <ref>[http://grootmeesterlijkschaak.webklik.nl/page/computerschaak Computerschaak en Schaakcomputers]</ref>, was member of the [[CEGT]] rating list team around [[Heinz van Kempen]] <ref>[http://www.husvankempen.de/nunn/testers/testers.html CEGT Testers]</ref>, and helped in translating [[Arena]].