Hrqls: If one person put in all their money (lets say 100), and then 2 others bid higher (lets say up to 150) - then if that first person wins, they will only win up to what they put in (100x3 = win 300) - which will leave 100 left in the side pot, in which those 2 who bid higher play for that, and the one who has the higher hand between those 2 win that one.