This casino system is also called a cross off system. It is advisable to take the paper and something to write … Write a series of increasing numbers such as 1,2,3,4,5. You can continue the series as you want. Stake is the same as the sum of the first and last number in the sequence, i.e. 1 + 5 = 6. Bet 6 tokens on custom color (red or black) and continue to bet on it.
Roulette spins, and you wait …
If you win: cross out two numbers (one on each end), ie 1 and 5
in which a series of numbers now look like this: 2,3,4,
which means that the next bet will be 2 + 4 = 6
If you lose: put the amount of the loss, ie 6 at the end of the series, which now looks like this: 1,2,3,4,5,6, so next time you bet 7.
Similarly continue on until you cross out all the numbers and find that you win. The principle is the following – the colors of the roulette are only two, so it always falls on one or the other (It might, of course, to come up zero, but this does not happen often). So, you should win or lose equally.
Now attention – as you already know, if you lose you add a number, but if you win strikeout two numbers! Which means that the paper is clean quickly, and you win!