The D’Alembert is an even money roulette system that is a lot safer than the Martingale and it’s also easy to understand. It can be used on Red/Black, Odd/Even, 1-18/19-36 and here are the two most important rules for the system:
- Increase your bet by 1 after a loss.
- Decrease your bets by 1 after a win.
So you will begin by betting something like $5 on Even and then if you lose, increase your next bet to $6, if you lose again, increase the next bet to $7. If you win the next bet, reduce the next bet to $6 and then if that wins, reduce the next bet back down to $5 which is your quitting point.
While nothing is ever set in stone and you can walk away whenever you want, the usual rule with the D’Alembert progression is to get back to your starting point, take the win and then start a new progression all over again or walk away entirely depending on how long the progression lasts.
The potential profit with the D’Alembert is dependant on how long the progression lasts and how long it takes to get back to the starting point. The short example above does not highlight it, but the profit for the D’Alembert is usually the number of wins you’ve had before getting back to your starting point so long as you’re increasing or decreasing your bets by $1.
One thing that you might want to consider is walking away from the progression if you find yourself with a nice profit even if you haven’t got back to your starting point. So if you’ve had 22 losses and 20 wins, you would be in profit so rather than continuing with higher bets, take the smaller win and start over.
Upsides of this system – It’s easy to use, easy to keep on top of the progression and the progression itself is much slower than some other systems. If you have as many wins as losses, you will profit.
Downsides of this system – Like all systems, it doesn’t change the odds of the game and because the odds are in favour of the casino, you are unlikely to have as many wins as losses with the zero popping up every now and then to give the casino additional wins. It is also a slow system that requires discipline and patience.
Reverse D’Alembert System
You can also flip the rules of the system if you like, meaning that you increase your bets after a win and decrease them after a loss. What you need to remember is that by flipping the rules, you flip the profit potential as well so if you have as many wins as losses, so if you have the same number of wins as losses, you will be in minus by the number of losing bets you had.
Being in minus when you have as many wins as losses is not good so the only reason you would use the reverse version is if you’re trying to capitalise on a streak and take a big win. The problem with these kinds of systems is that it’s easy to be greedy and the winning run doesn’t last forever so you need to pick a point to walk away and stick to it.