Check out Joey Meyer’s Raspberry Turk build featured in The MagPi Magazine.
Joey Meyer’s Raspberry Turk is an ingenious chess-playing robot that was inspired by the eighteenth-century ‘Mechanical Turk’. While the latter machine had a human player concealed inside to determine its moves, the Raspberry Turk uses a Raspberry Pi 3 as its brain.
The chess player ponders the next move. Suddenly, a mechanical arm whirs into action, moves over the board, lowers an electromagnet, and picks up a piece… Checkmate!
Source: Adafruit – Robotics