ajeeb alexander graham bell amazon mechanical turk ambrose bierce amsterdam artificial intelligence automaton bavaria benjamin franklin brass canada candelabra candle carl hindenburg catherine ii of russia centimetre charcoal charles carroll of carrollton charles wheatstone charles willson peale chess chess review chess endgame chessboard clockwork computer chess computer programming count ludwig von cobenzl courtier cuba detective fiction documentary film dresden edgar allan poe edmund cartwright el ajedrecista english language europe evermore franc france frederick ii of prussia french language gene wolfe german language grover cleveland havana hoax human cognition ibm inventor ivory james robert smith john dickson carr john gaughan john kearsley mitchell joseph friedrich freiherr von racknitz karl gottlieb von windisch kenneth harkness kingdom of prussia leipzig leonardo torres y quevedo locked room mystery lodestone london louis dutens magnet mannequin maria theresa of austria metronome milan mississippi river napoleon i of france new york city ottoman clothing pantograph paris partitions of poland paul i of russia peale museum perforated hardboard philip thicknesse physician poland potsdam power loom president of the united states prototype raymond bernard ricky jay robert murray keith russia saint petersburg sanssouci science fiction scotland self-portrait shawl shilling skepticism smoking pipe southern literary messenger stalemate steam engine stephen jones stephen mark rainey telephone terry carr the chess monthly the crooked hinge tom standage turban united kingdom united states declaration of independence versailles vienna vilnius virginia walker chess-player wikimedia commons william schlumberger wolfgang von kempelen yellow fever