Here is a quick PPT tutorial on how to use The Royal System when playing casino roulette.
If you consider yourself one of the most attentive roulette players, you definitely should try this system.
However, if you think about when he lived and when actually formed at least basic roulette rules, it becomes clear that this is extremely unlikely.
First, observe a few consecutive spins and decide when to enter the game.
If you did not win, that is, the next spin also ended on the number of the second dozen, increase the rate by 1 euro (or the amount multiples of the one you decided to use).
How can the game look like?