This method uses a hole displacement and tries to find a match between the displacment's position and the actual number.
For example:
4 (ball #1)
9 (ball #2)
27 (ball #3)
34 (ball #4)
25 (ball #5)
3 (ball #6)
3 (ball #7)
13 (ball #8)
11 (ball #9)
33 (ball #10)
23 (ball #11)
12 (ball #12)
[...]
19 (ball #36)
We have to bet the position of the displacement; the anterior, middle and posterior numbers of it.
On our example, if we started playing in ball #3 of the displacement, we should bet numbers 2, 3 and 4. If we missed, then we should bet on numbers 3, 4, and 5. If we continue this analysis, we can see in the example that the system achieves victory in ball #12.
As you can see the picture below, the displacement moves forward until a match between the position and the actual number is found.
As usual, the betting process includes progressions, so we have to be extremely careful. A safe way of playing it, is waiting 11 or 13 balls in the new displacement, without any burns (remember a burn is if the system achieved victory and you didnt'play it).
If this is the case, we should wait until the displacement is completed and start over with a new one. Once we started, we can use a standard progression, incrementing the betting chips if the balance of winning is negative.
This way, we can play for 22-25 balls, plus the 11 we have waited would totalize 36 balls.