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Joseph Friedrich Freiherr von Racknitz (1744–1818) Residing in Dresden, Holy Roman Empire, he worked as the equivalent of a court marshal, and published an often-cited pamphlet about the chess-playing machine The Turk, Ueber den Schachspieler des Herrn von Kempelen, nebst einer Abbildung und Beschreibung seiner Sprachmachine, which attempted to reveal the secret behind the purported automaton using new illustrations as well as personal observations. (From Wikipedia)

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