D'Alembert vs Oscar's Grind
Which roulette betting strategy is right for you? Compare these two popular systems side-by-side.
D'Alembert Strategy
Increase bet by one unit after a loss, decrease by one after a win.
Oscar's Grind Strategy
Increase bet by one unit after a win, keep same after a loss. Goal is to win one unit per cycle.
10,000 Simulated Sessions Each: D'Alembert vs Oscar's Grind
We ran both systems through 10,000 simulated sessions on a European wheel under identical conditions: $1,000 bankroll, stopping at $1,500 (win), $500 (loss), or 500 spins.
| Measured over 10,000 sessions | D'Alembert | Oscar's Grind |
|---|---|---|
| Sessions ended in profit | 36.6% | 28.8% |
| Average session result | −$155 | −$130 |
| Average spins per session | 163 | 485 |
| Average worst drawdown | −$413 | −$254 |
| Best single session | $565 | $510 |
| Worst single session | −$610 | −$510 |
In this run, D'Alembert ended more sessions in profit, while Oscar's Grind lost less on average — a classic trade-off between win frequency and loss size. Neither beat the house edge.
How D'Alembert sessions ended
How Oscar's Grind sessions ended
Methodology: fixed-seed runs from our open simulation engine, using the same settings as the strategy guides and interactive simulators — the numbers here match each system's guide page and can be reproduced there. Both systems lose on average because no betting progression changes the house edge; the comparison shows how differently they get there.
Side-by-Side Comparison
| Feature | D'Alembert | Oscar's Grind |
|---|---|---|
| Style | moderate | conservative |
| Complexity | simple | moderate |
| Progression Type | negative | positive |
| Best For | Conservative players | Patient players |
D'Alembert
Pros
- ✓Very slow and safe progression
- ✓Easy to understand
- ✓Lower variance than Martingale
Cons
- ✗Takes longer to recover losses
- ✗Still cannot beat house edge
- ✗Profit potential is limited
Oscar's Grind
Pros
- ✓Very conservative approach
- ✓Limits bet increases
- ✓Good for extended play
Cons
- ✗Slow profit accumulation
- ✗Can take many spins to complete a cycle
- ✗Boring for action-seekers
Quick Summary
Quick Simulation: D'Alembert on Red
Starting balance: $1,000 | Base bet: $10 | European roulette odds
Quick Simulation: Oscar's Grind on Red
Starting balance: $1,000 | Base bet: $10 | European roulette odds