The Labouchere (also called the cancellation system, split Martingale, or American progression) is a sophisticated roulette betting system where the player defines a target profit sequence at the start of the session. Each bet equals the sum of the first and last numbers in the sequence. A win cancels those two numbers; a loss adds the losing bet amount to the end. When all numbers are cancelled, the target profit is achieved. The Labouchere is more complex than Martingale or D'Alembert but provides precise session profit targeting. It requires more wins than losses to complete a sequence (wins cancel 2 numbers, losses add 1) — but a losing streak extends the sequence significantly, requiring larger bets to recover. Like all systems, Labouchere does not change the house edge — but it's popular among serious roulette players for its goal-oriented structure. Used at even-money bets (Red/Black, Odd/Even) at Bitcoin casino live roulette.
For the Oscar's Grind guide (simpler positive progression), see Oscar's Grind roulette guide. For the Fibonacci guide (sequence-based), see Fibonacci roulette guide. For the D'Alembert guide, see D'Alembert roulette guide. For the Paroli guide, see Paroli roulette guide. For the roulette strategy guide, see roulette strategy guide. Full operator ranking at high roller crypto casinos.
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The Labouchere (cancellation system) defines a target profit sequence. Each bet = first + last number. Wins cancel both numbers; losses add the bet to the end. When all numbers are cancelled, the target profit is achieved.
No — house edge remains 2.7% on European Roulette. Labouchere changes bet sizing and session structure but not expected value per unit wagered.
Long losing streaks extend the sequence and push required bets higher — linearly (not exponentially as with Martingale). A bad session with many consecutive losses produces a long sequence requiring large bets to cancel. Set a session stop-loss to cap maximum downside.
The system requires winning approximately 33.3%+ of spins to cancel numbers faster than they're added. European Roulette even-money wins at 48.6% — comfortably above 33.3% in theory, but individual sessions with below-average win rates still extend sequences significantly.
Any sequence summing to your target profit. Conservative: 1-1-2 (target 4 units). Standard: 1-2-3-4 (target 10 units). The larger the sequence, the larger the target profit but the longer the recovery from losing streaks. Start conservative for your first Labouchere sessions.
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