The systems bet calculator can be used to calculate your system bets potential winning. This calculation depends on the type of system bets you are placing. For example, a 2/4 system bet will require 2 games out of 4 games to win for your betslip to win but will have greater win money if 3 games win. But with the Trixie system bet, you need 2 games out of the 3 to win your bet, but if 3 out of 3 enter, your win is much higher than just the 2/4 system bet.