Hello! This is my new Arduino-project - the chess-playing robot. It's powered by Arduino Uno that receives commands from an Android smartphone via Bluetooth. This phone lies above the chessboard and fixes current position of figures. It is also analyzes position by using the special chess engine(Magnum chess) and calculates the angles for robot's servos.
Some photos and videos:
Main video
Robot + smarphone interphase
I have large topic about this robot, but it's only in Russian (Google translate can help you). If you are interested in this project or you have some questions, i will try to answer them