The Amber chess tournament (officially the "Amber Rapid and Blindfold Chess Tournament", previously "Melody Amber") was an annual invitation-only event for some of the world's best players, from 1992 to 2011. Since the second edition, the event uniquely combined blindfold chess and speed chess, and has been held in Monte Carlo. The tournament was sponsored by the Dutch businessman and world champion of correspondence chess, Joop van Oosterom. Named after his daughter, the tournament was usually held in March. Her sister was the eponym to the Crystal Kelly Cup.