In this strategy, the algorithm of actions is the following :

  • Decide on the amount you want to win.Suppose, it is $100.
  • Divide the amount into several parts. There is no rule as to what parts the amount should be divided into. The only requirement is that the sum of all the parts must equal the amount of your desired winnings.Suppose, you divided the amount into five equal parts: 20 20 20 20 20
  • Now take the leftmost and the rightmost values, add them together and bet the resulting amount with odds no less than 2.0.
  • If you lose your bet, add the lost amount to the end of the row.20 20 20 20 20 40 In case of a win, remove the values from the row. 20 20 20 20 20
  • Repeat the cycle described in item 3 until all the numbers are crossed out of the row.
Labouchere Calculator System
  • To win the desired amount, we need to remove the whole sequence of numbers
  • After every loss, one number is added to the row
  • After every win, two numbers are removed from the row

Consequently, we need to have at least 33.4% of wins to close the row and therefore win the desired amount.

Below is the mathematical formula reflecting this principle:

(NumberOfLosses + QuantityOfNumbersInARow)  /  2 ≤ NumberOfWins

To illustrate how the formula works, we will use the example above where we had 5 numbers in the row. Suppose, we have already lost one bet. To complete the cycle, we need to win:

(1+5) / 2 = 3 times. Check it

RowEventBetBank
20 20 20 20 20Loss20+20-40
20 20 20 20 20 40Win20+20-40+60 =20
20 20 20 20Win20+2020+40 =60
20 20Win20+2060+40=100

It turns out that the idea with the 33% is the following: the more losses you have, the less wins you need, but not less than 33.34%.

The results in the table are unexpected, and you will not find this information on other websites:

The 33.34% win rate turned out to be nothing more than a theoretical value… almost impossible to reach…

 Regular Labouchere Calculator