The Labouchère system, also called the cancellation system or split martingale, is a gambling strategy used in roulette. The user of such a strategy decides before playing how much money they want to win, and writes down a list of positive numbers that sum to the predetermined amount.

The Labouchere system is a bit more complex when compared to Martingale and Fibonacci, for example, but you can master it with just a bit of practice.

The Labouchere system: (Money management betting systems, gambling systems.) Negative progression system, also called the 'Cancellation System'.

Roulette is a casino game named after the French word meaning little wheel. In the game, players may choose to place bets on either a single number, various groupings of numbers, the colors red or black, whether the number is odd or even, or if the numbers are high (19–36) or low (1–18).

Progressive strategies are created around the concept of increasing the size of your bet after witnessing the outcome of a round. One of the most famous and widely used roulette strategies – the Martingale system – is a great example of a progressive strategy.