Outside Bets Used In The D’Alembert Strategy
The D’Alembert strategy is most commonly used with outside bets. These include red or black, even or odd, and 1–18 or 19–36. These bets offer close to even odds, which makes them suitable for gradual betting progressions.
The system assumes that outside bets will eventually balance out. For example, a long run of red results is viewed as temporary, based on the belief that red and black outcomes will even out over time. While this assumption does not change the house edge, it explains why the strategy focuses on these bet types.
How The Betting Progression Works
Players begin by placing one chip on their chosen outside bet. As long as the player keeps winning, the bet size stays the same. When a loss occurs, the player increases the next bet by one chip.
After the next win, the player reduces the bet by one chip again. This increase-after-loss and decrease-after-win pattern is the core mechanic of the D’Alembert system. It creates a controlled progression that avoids rapid bet escalation.
Reaching The Original Bet Size
The system continues until the player returns to the original bet of one chip. Once this happens, the progression cycle is complete. At this point, the player has theoretically gained one chip for each winning coup during the sequence.
The goal is to repeat this process consistently. Each successful cycle that ends at the original bet size results in a small net gain. This steady approach is what defines the D’Alembert roulette strategy and separates it from more aggressive betting systems.
