D'Alembert
D'Alembert system is similar to the Martingale and Fibonacc.while losing bet is increased by one, and when its win is reduced by one. Example: 1 bet and win bet again 1, lose and bet 2 (increase your bet by one); lose the next bet is 3 (increase your bet by one); lose the next bet is 4 (bet increase by 1); win the next bet is 3 (reduced by 1).