After 3 winning sessions in a row, i can say this is a pretty good system!

consider these 4 groups of nine numbers

RED HIGH
RED LOW
BLACK HIGH
BLACK LOW

now, the trigger is to bet the last group hit (9 numbers) with a negative progression. Look at the history of spins to locate the last group hit....

pretty easy to play,

it's not purley based on the carpet since each group covers half the wheel. (if that makes any difference, i don't know!)

9 numbers negative progression; 1 1 1 2 2 3 4 5 7 9 12 16 22 29 39 52 69

the way i've played it, is not a perfect progression, but very easy to play; i double bets after 3 spins...