Patent ID: 7883412

Claim:
A system for detecting and controlling collusion in a game having a plurality of participating players comprising: means for recording, for each player, an amount wagered on each turn of the game in which the player participates, and a corresponding outcome of said wager, the outcome being a complete or partial forfeit of the wager if the wager is unsuccessful, and a profit made on the wager if the wager is successful; a ranking facility operable to derive a primary statistic for each player as a function of a total number of turns of the game played by the player and the outcomes of the wagers made by the player in these turns of the game, wherein the primary statistic is a ratio of a cumulative outcome of the player's wagers and the total number of turns of the game played by the player; and monitoring means for monitoring the primary statistic of each player and generating an output when the primary statistic of any player changes by more than a predetermined amount, the output being an indicator of possible collusion by that player.