Statement: throughout a displacement, 95% of the times a square is completed.
A square is a figure formed in the cloth of the Roulette, for example 5, 6, 8, 9.
What we have to do is use the cloth of the Roulette in a small size written on a piece of paper; therefore, we start 'crossing' those numbers in it until a square is about to be completed. At that point, the number that would complete the square is written apart, since is the one that we will bet on.
Hole displacement example:
10-21-27-28-21-14-33-6-21-30-13-6-19-21-26-3-27-31-35-12-22-27- 17-11-2-33-15-21-36 -34-36-31-30-4-0-16-7.
After eleven numbers thrown (number 13), one square is about to be completed with number 11: 10, 11, 13, 14.
We should write the number 11 apart and keep waiting.
After 23 balls, we have three squares to be completed, so we have three numbers to bet (which are the numbers that would complete the square): 11, 16, 29.
The next number in the example displacement is the 11, which would give us the victory.
Clarifications
Numbers 0,1,2 and 3 are another square, so you should treat it the same way as any other (for example, if numbers 0,1,3 where thrown, we should bet number 2).
Ignore the 00 for Double Zero Roulettes.
If a square has been completed before ball number 20, you should restart the analysis.
You should use a progression betting, the exact same way as system 1. This is risky, so you must set a maximum limit to stop the cycle.
A good approach is waiting for a non burned session (meaning a square has not been completed yet) of 20-24 balls and then start betting. This way we can cover the hole displacement.