The D’Alembert System for Roulette

The great proliferation of analysis systems for the game of Roulette testifies to its great popularity in 18th century France, although the first variant to be officially recognized as a casino game was American Roulette .
In fact, the D’Alembert system is freely inspired by the well-known Martingale system , of which it takes up some elements of its strategy, simplifying them.

The theory developed by d’Alembert is based on a very simple game system: in case of victory the player must lower the next bet by one unit compared to the previous one, while in case of defeat it is necessary to do the opposite by adding a ‘ unit.


The strategy developed by d’Alembert is suitable for all Singapore casino games that allow bets based on double chances ( Red / Black , Even / Odd ) and therefore also to Roulette .

Example of use of the d’Alembert system:
• Choose the value of the bet, in this case it will be decided to play 100 euros.
• Choose the double chance you want to use, in this case you will decide to play on Black.
• In case the Rosso comes out, 100 euros will be lost.
• At this point you have to bet 200 euros and play again.
• If you still lose, you will need to raise your stake to 300 euros.
• If on the third bet the player is victorious he will have to make another bet of 200 euros.
• If he manages to win again this time he will be able to make a bet of 100 euros and thus close the series.
• Once a series is closed, the player can start another one obviously starting from the base bet of 100 euros.

Pros and cons of the d’Alembert system

The great strength of this game is its simplicity of implementation, while its biggest limitation is the need to wait patiently for the end of a series.
In fact, to unfold its full effectiveness this system requires a steady hand on the part of the player who must base his entire gaming experience on the completion of the series started.

Other system: The Ascot System for Roulette

This game pattern is one of the oldest and is particularly suitable for games that offer even money.
In fact, many professional Roulette players use it for red / black , even / odd or 1-18 / 29-36 bets .
The system arises from a variation of the Alambert system that we have already illustrated in the previous article.


The Ascot system , like other game schemes, is based on a progressive numerical series in which the player increases or decreases the amount of the bet according to the results of the ivory ball.
Most players use the pattern based on a standard sequence: 2, 3, 5, 8, 13, 20, 30 and place the following bets:
• the first bet must be placed on the central number of the series (8 chips);
• if the first bet is successful, the player increases the bet up to the second number (13 chips);
• if, on the other hand, the bet is not successful, the player must lower his stake, in this case (3 chips).


This system, bearing in mind the strong randomness of Roulette, allows you to greatly extend your gaming experience at the green table.
This long stay seems to be the only really positive element of this system which instead exposes the player to various risks.


The most obvious limitation of this system is that more consecutive losses when playing at the top end of the series significantly erode the possible winning potential.

Leave a Reply

Your email address will not be published. Required fields are marked *