I tried figure out a strategy same principle as my old friend played, but this played 9 numbers. (9 numbers is my favorite bet, for reasons I can't explain....)
This is betting on 3 groups A B C in sequence.....3 spins for each group (A-B-C-A-B-C...) next group is bet after three losses, if hit start over calculate 3 more bets (same group) until 3 losses, then bet next group and so on....
Progression: soggett's progression for 9 numbers +1/-1 each third spin.
These 3 ABC-groups of numbers are: (se pic)
A: 0 1 8 11 14 20 26 30 32
B: 2 5 7 16 18 21 24 25 29
C: 4 9 13 15 19 22 27 31 36
Result from Live-Spins:
LWLLWLLLLLWWLLWLLLLLWWLLLLLWLWLLLLLLLLLWWLLLLLLWWLLLLLWLLLLWLLLLLWWLLWLLLLLWWLLLWLWLWLLLLLLLLLWWLLLWLLWW
This wasn't meant for RNG (?) ...just tested it
WLLLLWLWLLLLLLLLLLLWLWWLLWWLWLLLLLLLWLLLLLLLWLLWW
+80u IN 49 spins (RNG fun)