The Turk
The Turk would use the white pieces and have the first move. Between moves its left arm sat on a cushion. The Turk could nod twice if it threatened the other player's queen, and three times upon placing the king in check. If the other player made an illegal move, the Turk would shake its head, move the piece back. The first person to play against the Turk was Count Ludwig von Cobenzl, an Austrian courtier at the palace. He was quickly defeated.