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a German computer chess aficionado, tester, as well as tournament organizer and journalist. He also wrote a [[MS-DOS|DOS]] chess program in [[Basic]], dubbed [[Capa]] <ref>[http://www.thorstenczub.de/capa.html Capa] Thorsten's [[MS-DOS|DOS]] Chess Program, written in [[Basic]] (German)</ref>. Thorsten cooperated with many chess programmers as tester and operator, most notably with [[Chris Whittington]] author of the mighty [[Chess System Tal]], and occasionally with [[Ed Schroder|Ed Schröder]], [[Christophe Théron]], [[John Stanback]], [[Martin Bryant]], [[Ryan Benitez]] and probably others. Thorsten also hosts a [[HiarcsHIARCS]] Fan Page <ref>[http://www.thorstenczub.de/hiarcs.html Hiarcs Fan Page]</ref>.