The Royal Game of Ur

Ancient game. Each player brings their 7 pieces in to play and takes them off of their outer track. Opposing pieces come into conflict on the inner track that they must travel on to the exit. If you land on a space occupied by a single opponent's piece you send it back to the start. If you land on a space occupied by 2 or more opponent's pieces then your piece goes back to the start. First to bear off all 7 of his pieces wins.