How to Use the D’Alembert Roulette Strategy

Learning how strategies work is an important step when it comes to understanding online roulette. Luckily, learning new strategies doesn’t have to be difficult, as there are many systems that are incredibly helpful and easy to learn, such as the D’Alembert roulette strategy.
This guide will explain everything you need to know about the D’Alembert system, including its inner workings, advantages, disadvantages, and variations. Use this information to improve your knowledge and up your game. Keep reading to learn more.

General Details and Concept

As with other roulette strategies, the D’Alembert system was also invented by a mathematician – Jean le Rond d’Alembert, a French scholar that lived during the 18th century.

The strategy is like the Martingale system, although it has a key difference that makes it less aggressive. Instead of doubling down on a loss, players only have to increase their bet by one unit. In case they win, they must decrease their bet by one unit.

By being less aggressive, it reduces one of the major risks associated with the Martingale system and other strategies, as exponentially larger bets may ruin your bankroll in one go. It’s still important to remember roulette is a game of chance and strategies aren’t foolproof, though.

D’Alembert Strategy Betting Guide

The D’Alembert strategy should be used on bets with odds close to 50%, also called even money bets, such as black or red, high or low, and odd or even. It relies on the idea that even money bets are balanced, with players winning the same number of bets they lose.

One of the most positive aspects of this system is that it’s straightforward. Check the following guide and learn how to implement this strategy:

1. Set a base stake
Decide what your base unit will be before playing. Ideally, it shouldn’t be over 2% of your total bankroll.

2. Start by betting one unit
The first bet should always be equal to one base unit.

3. Increase your stake if you lose
If you lose, increase your stake by one unit and repeat your bet.

4. Decrease your stake following a win
If you win, decrease your stake by one unit and place the same bet again.

Examples of the D’Alembert Strategy in Action

Are you having trouble understanding how this strategy can be profitable? Don’t worry, we’re here to help you. Look at the examples below and learn what payouts you can expect after a few rounds of roulette:

Round Stake Unit Outcome Profit per Round
1 1 Loss -1
2 2 Loss -2
3 3 Loss -3
4 4 Win 4
5 3 Win 3
6 2 Win 2
Total Profit 3


In the example above, the player turned a profit in six rounds despite winning and losing the same number of times. The final profit corresponds to three units. Now, let’s look at another example:


Round Stake Unit Outcome Profit per Round
1 1 Win 1
2 1 Loss -1
3 2 Win 2
4 1 Win 1
5 1 Loss -1
6 2 Loss -2
7 3 Loss -3
8 4 Win 4
9 3 Loss -3
10 4 Win 4
Total Profit 2

Pros and Cons

It goes on without saying there are no foolproof strategies for roulette, and the D’Alembert system isn’t an exception. Even though it’s one of the top choices for many roulette players because of its benefits, this strategy still has a few limitations.


• It’s one of the easiest systems to learn, making it perfect for beginners.
• As you can choose any base unit, this strategy can also be used by high-rollers and experienced players.
• It’s not as exponential as the Martingale strategy, which means it can support longer losing streaks.


• It’s harder to recover from a losing streak compared to other betting systems.
• The winning potential is small, even if you win multiple times in a row.

D’Alembert Strategy Variants

Many players have tried to develop new variants based on the D’Alembert strategies. Even though the logic remains the same, some of these strategies can lower the impact of losses or prevent your stakes from becoming too high. Have a look at the most common variants:

Stake adjustments

Here are a few ways to adjust your stakes when using the D’Alembert system:

• Increase or decrease your bet by more than one unit to benefit from alternating wins and losses.
• Set a maximum stake to prevent you from losing your bankroll on losing streaks.
• Return to the base unit instead of lowering your stake by one unit to limit your losses.

Reverse D’Alembert

As the name implies, this system is the opposite of the D’Alembert strategy. It requires increasing your bet by one unit after every win and decreasing it after every loss. While it has different results compared to the traditional strategy, using this system can make it easier to recover from long losing streaks.

Final Thoughts

The D’Alembert system is a good roulette strategy for beginners. It requires a small bankroll and is very easy to learn and implement, which is why it’s so popular among roulette enthusiasts.
Using this strategy won’t make you a millionaire, as the returns are extremely low. It also requires evening out your wins and losses to turn a profit. Therefore, it’s a great way to get started on online roulette.

Roulette strategies aren’t foolproof, but the D’Alembert system will always turn a profit when you have the same number of wins and losses.

The D’Alembert system is one of the top strategies due to how straightforward it is. However, there are better strategies if you’re a high-roller or prefer taking risks.

Yes. This is one of the top strategies for beginners because it’s simple to understand.

Yes. The D’Alembert strategy works with all even money bets, whether you’re playing American, European, or French Roulette.