For example, you have selected five wagers, you may choose to bet on the system 4/5 . This means that you will receive your winnings if at least four of your five wagers are correct. The same principle applies if you choose a system 3/5 ; you will receive your winnings if at least three of your wagers are correct.
If a single event is lost in an accumulator bet, the entire betting slip is lost. In the case of a system bet, on the other hand, the remaining accumulator bets can be won despite a failed pick. That means that with system bets, the possible odds decrease, but the real chance of winning actually increases.