The D’Alembert strategy in roulette explained

Lucas Costa
September 17, 2023
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The D’Alembert is one of the safest strategies to use in roulette. Although you increase the bets after your losses like in the Martingale system, but in a much smaller rate than in the most famous strategy of roulette. This is an even betting system as it uses red-black, odd-even and 1-18 / 19-36. The math and theory behind D’Alembert makes it unsuitable for dozens/columns and inside bets.

Examples of the D’Alembert strategy

All you do with this system is select a starting bet and increase the bets by one exclusively after a loss and decrease them if there was a win. According to the theory, you make a profit if you had as many wins as losses, since you profit from the sum of bets you placed. Here is an example that starts with a sum of 5:

  • Bet 5 and lose
  • Bet 6 and lose
  • Bet 7 and win
  • Bet 6 and lose
  • Bet 7 and win
  • Bet 6 and win
  • Bet 5 and lose
  • Bet 6 and win

The math for what we just did is as follows: 0 – 5 – 6 + 7 – 6 + 7 + 6 – 5 + 6 = 4

In the above sequence, there were 4 losses and 4 wins, yet you have a total win of 4. This is the golden rule with the D’Alembert – if the number of wins equals the number of losses, you will always profit from the sum of bets.

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Advantages

There is no roulette strategy that is 100% safe and works, as every system carries a certain amount of risk, but the D’Alembert strategy is among the safest ways to leave the roulette table with winnings. You don’t need a large bankroll and you don’t run the risk of being restricted by the table limits, unless you have a very unlucky streak in the game.

Disadvantages

The potential profits are low, as expected from a strategy with a relatively low-risk system. You also have to rely on winning as many bets as you lose, which is unlikely in the long run.

Another challenge with the D’Alembert system is the possibility of encountering a long sequence of losses, which can be financially demanding. To recover, you need an equal number of wins, but there’s no guarantee of this happening after a losing streak.

As always, it’s essential to set limits for yourself, whether it’s for losses or winnings, to maintain control and enjoyment while playing roulette!

Author Lucas Costa