On the first bet, there is a 73% chance of winning $5, and a 17% chance of losing $25. The way it is written here, and the wikipedia definition of martingale, and the way I understand it, anytime you are under $500, the previous bets get doubled. The modified Martingale does better because if any of your first three bets win, you stop betting.īet on 1-18 and 3rd Dozen in 3:2 ratio and Martingale only incase if your balance is less than your initial bankroll. If, instead of flat bets of 50, you make flat bets of 10, the chance of success drops to 59%.

Remember that the more bets you make, the more money you expose to the house edge. On yet another hand, if you do a modified Martingale where your initial bet is the amount you need to reach your target and you always bet the smaller of what you need to reach the target and what's left of your bankroll, you have an 89% chance of success:īet 1 - bet 50 if you win, you have reached your target, and if you lose, you have 450īet 2 - bet 100 if you win, you have reached your target, and if you lose, you have 350īet 3 - bet 200 if you win, you have reached your target, and if you lose, you have 150īet 4 - bet 150 if you lose, you are bust, and if you win, you have 300 and need to win 250 more, so bet 250īet 5 - bet 250 if you win, you have reached your target, and if you lose, you have 50īet 6 - bet 50 if you lose, you are bust, and if you win, you have 100 and need to win 450 more, so bet 100īet 7 - bet 100 if you lose, you are bust, and if you win, you have 200 and need to win 350 more, so bet 200īet 8 - bet 200 if you lose, you are bust, and if you win, you have 400 and need to win 150 more, so bet 150īet 9 - bet 150 if you win, you have reached your target, and if you lose, you have 250īet 10 - bet 250 if you lose, you are bust, and if you win, you are back to your starting point, so start over with Bet #1 On the other hand, if you keep it simple, and just keep betting 50 per spin on 1-18 (or any even-money bet), you have an 85% chance of success. I get about a 61% chance of reaching your target before losing the entire bankroll. Your system wins 1 with 28 numbers and loses 5 with the other 8.

How to always win at casino roulette