Instead of building a chess board with sensors would like to have chess pieces which are like checkers with standard chess piece identification printed on top of checker. Any ideas on best coloration of checker/chess pieces with graphic on top and size of pieces? Has anyone used this approach to playing chess with a robot arm and is there code for a robot using openCV to play chess. Each piece could have a different color around the circumference of the checker chess piece. Also is there a small, inexpensive computer that could use a simple open source chess program and fit into a box under the board. I programmed in Basic 37 years ago and know very little about openCV. I hope someone has already made a chess playing robot that uses openCC.