**An attempt to analyze M. de Campelin's Chess Automat. To which is added an extensive collection of the moves of the knight on the chessboard** *(An effort to study the Automat in Chess by M. de Kempelen. To which is appended an extensive collection of the moves of the knight on the chessboard)* is an experience which reveals to the reader the secret of the famous Chess Automat, created by M. de Campelin. The author, Robert Willis, turns to dissecting the mechanisms of this machine, revealing its secrets and functioning. The book also contains an extensive collection of knight moves on the chessboard to help chess players develop their skills and abilities. This publication will be a valuable source of knowledge for anyone interested in chess, mechanics and inventions of the 18th century.