The game has only three possible outcomes: a draw, or a win for one player and a loss for the other. Rob will be your AI partner in this game :)
A player who decides to play rock will beat another player who has chosen scissors ("rock crushes scissors" or sometimes "blunts scissors"), but will lose to one who has played paper ("paper covers rock"); a play of paper will lose to a play of scissors ("scissors cuts paper"). If both players choose the same shape, the game is tied and is usually immediately replayed to break the tie. The type of game originated in China and spread with increased contact with East Asia, while developing different variants in signs over time. Other names for the game in the English-speaking world include "roshambo" and other orderings of the three items, with "rock" sometimes being called "stone".