Mephisto consisted of a life-size figure representing the mythical
Mephistopheles. Dressed in elegant red velvet attire, the figure had a cloven hoof as a foot and was seated in an armchair in front of an unenclosed, open-sided table with a chessboard and pieces. Contemporary accounts describe the figure's head and upper body as rigid. Its right arm extended over the board to "indicate" moves, while assistants manually moved the chess pieces following the operator's instructions. The chessboard contained shallow recesses that held the bases of the chess pieces in place, preventing them from slipping when the table was jostled. The figure itself was firmly bolted to the table and its arm was given enough reach to cross the board without destabilizing the entire structure. Before each exhibition, members of the public were invited to inspect the contraption to convince themselves that no player was hidden inside. This was a key element of Mephisto's publicity and of its distinction from earlier chess "automatons". ==History==