Mouret is best known as the person hidden inside The Turk, a fake chess-playing machine. Mouret was one of many great chess players who worked inside the machine, others being Johann Baptist Allgaier, who defeated Napoleon in 1809, Schlumberger, Boncourt and Lewis. Fifty games played by Mouret from inside the Turk in London in 1819, are collected in a book published in 1820. In the beginning of the book it was written that out of 300 games, the Turk (Mouret) only lost six. 