Chess

From SGCommand

"It's all about strategy. He's planning his next move, and the move after that, and the move after that."

—Elizabeth Weir

Chess is a recreational and competitive game played between two players that originates on Earth. Chess is often played by Atlantis personnel in Atlantis' mess hall and by Samantha Carter and Cassandra on Saturdays. On one occasion, Cassandra even levitated a chess piece when she developed telekinetic powers. (ATL: "Aurora") (SG1: "Rite of Passage")

When Col. O'Neill was discharged from the Air Force, he was so bored at one point that he played chess on his own, playing himself as the opponent. (SG1: "Shades of Grey") O'Neill often plays chess on his computer at The Pentagon. (SGU: "Air, Part 3")