Martingale
Martingale doubles after a loss and resets after a win. It creates many small winning sequences and occasional losses large enough to erase many prior gains.
Finite bankrolls and table maximums prevent unlimited continuation. Every dollar placed still faces the wheel’s edge.
Other progressions
Fibonacci and d’Alembert increase bets more slowly. Labouchere uses a cancellation list. Positive progressions increase after wins instead.
Different paths change variance and maximum exposure, but linearity of expectation means the expected loss remains edge multiplied by total action.
Wheel and sector systems
Neighbor bets and racetrack sectors cover physical wheel regions. On a fair wheel, they do not become favorable because nearby numbers appeared recently.
Detecting a physical bias would require controlled data, stable equipment conditions, and statistical evidence far beyond visual streaks.
Stopping rules
Win goals and stop-losses determine when future wagers cease. They can cap a session’s planned exposure but cannot retroactively improve the value of completed spins.
Repeated sessions reset the narrative, not the underlying expectation.
The number worth comparing
For Roulette Betting Systems, wheel type and special rules such as la partage or en prison determine the price; chip placement does not change the probability.
For Roulette Betting Systems, keep the rules and denominator fixed. A percentage per initial wager is not interchangeable with one per average total action.
Read Roulette Betting Systems as a model with named inputs. Change a rule or denominator and the quoted result no longer answers the same question.
What to record for Roulette
- Stated denominator
- strategy assumption
- exact rules used
If the inputs for Roulette Betting Systems cannot be matched, report the missing assumption instead of borrowing a cleaner number.
Roulette Betting Systems is reviewed against the Roulette rules described above. A different pay table or procedure is a different model. Editorial review updated September 24, 2026.