The D’Alembert System strategy in roulette is named after the French Jean le Rond d’Alembert who lived in France in the 18th century.
D’Alembert System
D’Alembert System is a pyramid system, the system is based on an mathematical equilibrium theory. The D’Alembert method is similar to the Martingale strategy, the system is mainly applied to the even-money outside bets, and is a favourite for players who keep their losses to a minimum.
The system works on a betting progression, where after each loss, one is added to the next bet.
After each win, one is deducted from the next bet.
As you win, keep doing this over and over again. As soon as you lose, you start increasing each of your bets by one chip.
Example: If you start with 12 units and you lose, then your next bet will be 13 units.
If you win the next one, then you’re next bet will be 12 units.
All you do with this system is pick a bet where you want to start with, then you increase your bets by one after you lose, and decrease them by one after you win. The theory is that once you have as many wins as losses, you will be in profit by the amount of bets you’ve placed. A quick example starting with a bet of 10:
- Bet 10 and lose
- Bet 11 and lose
- Bet 12 and win
- Bet 11 and lose
- Bet 12 and win
- Bet 11 and win
- Bet 10 and lose
- Bet 11 and win
The D’Alembert roulette system is mostly used playing on the outside bets – those are red/black, even/odd and 1-18/19-36. The assumption of the roulette strategy is, that the frequency of how often the outside bets win, is always going to balance out in the long run.
There is a big chance that everything just goes completely differently then you expected.
That would naturally crush the whole principle behind the system and might leave you with no winnings at all.