Evening all, I just waded through that (roulette-cc? influenced) quagmire of referred posts about the system that records groups? of four numbers to indicate hot and cold wagering opportunities.
I noticed not one, but two Elephants in the room, although, I do admit, the scattergun approach sometimes works, if you can reduce the per-spin out lay.
Elephant number (1) Choosing four (essentially diametric Compass points) is not a "grouping" and cannot signify a "hot" or "cold" sector neither of which I believe in by the way, a much more efficient method to keep track of, would be to pick groups of four adjacent numbers, and the single O wheel, provides the sequence very elegantly.
Elephant number (2) Dismissing or ignoring the Zero is a fatal decision, as it then becomes the unassailable "house" number, and apart from screwing with your charts/records/results, it now means that you are playing a self imposed 5.4% against the player, (american odds) wheel.
IMO, the more practical grouping is this, groups of four. Starting with Zero, anticlockwise, the first group has Five numbers, 0, 32, 15, 19, (4) the second group is 21, (2), 25, 17, the third being 34, (6), 27, 13 and so on till you get to 12, 35, (3), 26 and you include Zero again in this last group.
The groups are now very easy to chart or keep track of, because the group that contains the number 4, is the number 4 group, as is the number 2 group, the number 6 group, the number 8 group, etc.
So, now you have nine trackable "sector" groups, each with its own included number signifier, and no confusion.
I know that including the Zero in both the "3" and "4" sections may incur some debate, and it could be assigned to just one or the other, but I think that if it was assigned to the "3" sector, and wagered as a "split" with Zero, that the four chip out lay per spin would be compromised when either the "3" or the "0" appeared..
There a several exquisitely balanced patterns on the single Zero wheel, other than the traditional classics, in fact, there are enough patterns to provide a win result to ANY record of 100 consecutive spins Have a Great week! -R.