Roulette · Strategies
Betting systems do not change the wheel
A fixed stake makes it easier to compare outcomes without continually changing risk. Progressions such as doubling after a loss increase the size of future bets but leave the wheel probabilities unchanged.
With a stake of 10, six consecutive losses in a doubling sequence cost 630 chips; the next bet requires 640. A finite balance cannot support endless doubling. A simulator lets you observe this without risking money.
Use practice to learn payouts and recognise changing exposure. Do not treat a streak, a hot number or a recovered loss as evidence that a system has overcome the house edge.
Roulette betting systems: worked examples
Martingale: doubling after a loss
With a one-chip unit, successive losing bets of 1, 2, 4, 8, 16 and 32 consume 63 chips. A 100-chip balance then has 37 left and cannot place the next 64-chip bet. Doubling changes the exposure, not the next spin’s probability.
D’Alembert: changing by one unit
A common version adds one unit after a loss and removes one after a win, never going below one. Six losses with stakes of 1 through 6 cost 21 units. The growth is slower than doubling, but a series can still exhaust a finite balance.
Fibonacci: following a sequence
One version moves forward after a loss through 1, 1, 2, 3, 5, 8 and moves back two positions after a win. Six losses cost 20 units; the next stake is 13. Different progression rules change the bankroll path, not the wheel’s house edge.
Compare systems with virtual chips
Keep the same starting balance and stopping point. Record the total wagered and the net result, including losing sessions. A few successful sessions do not establish a profitable system: each new outcome is independent.
Sources and calculations
These references support the topics listed below. Explanations and simulator examples are written by Simulator Lab. Numerical examples are calculations by Simulator Lab using the stated rules and assumptions.
- PokerStars — 3 Popular Roulette Strategies EN ↗
Martingale and D’Alembert stake changes; balance and table-limit constraints.
- PokerStars — European Roulette EN ↗
Wheel sequence; Voisins, Tiers and five-chip Orphelins; the Fibonacci progression described here.
- GambleAware NSW — Casinos EN ↗
Common myths: previous losses do not make a roulette win due; betting patterns do not control results.
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