Patent ID: 8568220

Claim:
A method of determining liability for a plurality of multiple bets placed via a computerized betting system, each multiple bet being a bet on a plurality of selected outcomes occurring in a plurality of respective different events, with each outcome of the plurality of outcomes within the multiple bet corresponding to a different event, wherein a multiple bet is a winning multiple bet if and only if all the selected outcomes within the multiple bet occur, the method comprising: receiving a plurality of multiple bets from a plurality of users; determining from said received plurality of multiple bets, a group of event-outcome selections selected in the plurality of received multiple bets; determining for each event-outcome selection in said determined group of event-outcome selections, the number of received multiple bets in which that event-outcome selection is selected; selecting, using the computerized betting system, a most popular event-outcome selection from the group of possible event-outcome selections, the most popular event-outcome selection being the event-outcome selection selected in the highest number of received multiple bets; evaluating, using the computerized betting system, all other event-outcome selections within the group of possible event-outcome selections on the basis that the most popular event-outcome selection is a winning outcome to produce a first result, the first result representing a liability associated with all the multiple bets that include the most popular event-outcome selection being winning multiple bets; evaluating, using the computerized betting system, all other event-outcome selections within the group of possible event-outcome selections on the basis that the most popular event-outcome selection is not a winning outcome to produce a second result, the second result representing a liability associated with all the multiple bets that include the most popular event-outcome selection being losing multiple bets; and selecting, using the computerized betting system, one of the first and second results that indicates the worst case liability.