The Labouchere system of betting on the roulette tables is regarded as quite a popular strategy to use to help the player come away from the table with money still in their pocket. It can also be commonly known as cancellation or positive progression which has some similarities to the Martingale system, but is considered a lot less risky and doesn't risk hitting the table limit too quickly. The invention of the technique is clouded by an amount of history but the little known information about it is that it's believed to be connected to UK politician, Henry Labouchere, a finance minister for Queen Victoria and was fond of gambling. Labouchere's strategies could be the one you decide to use when play any of the casino games.
The idea of the system is applied for outside even-money bets which are considered to bring less risk and more consistent wins. A player writes down a sequence of numbers which will determine the size of each bet. It is recommended the sequence be a list no larger than 10 to start with and the numbers between 1-5. The very first bet will be the sum of the first and last numbers in the sequence. If the bet wins, these two numbers are excluded from the sequence. The next bet will be the sum of the next first and last numbers and as a winning streak appears you will cross out each of the numbers in the sequence till the whole sequence has been crossed out. When the sequence is complete, start again with the same numbers or feel free to change and mix it up with a different sequence of numbers. However, every time the player loses the bet you must add the sum of the number from the first bet to the end of the sequence. The resultant net gain of a roulette cycle of 11 bets is 7 units, this is after 6 losses and 5 wins which can be seen as attractive odds compared to other betting systems.
A variation of this system is the reverse Labouchere system which is basically the same system but played in a reversed role. This means that the player removes the first and last numbers from the sequence after a loss and adds the sum of the previous bet to the end of the sequence when a win happens.