Turbo style teaser below (just showing you can do similar stuff with any combination of playing something within something that in theory gives 50/50) Playing 2 numbers in DozCol (not sure it has any "official" name what I mean are for numbers in a column in each dozen, so we have 12 of those in total. Basic tracking is same as 6 streets in dozens, so we play up to 2 numbers in each DozCol until either a repeat or 3rd number shows. We dont do same DozCol until all have completed. I recorded W or L depending on that mini session result. Overall stats are as usual around 2/3 ended up in a win (of course there is always the issue of spins in between), this was done over 653 spins. So unlikely to produce consistent profits without some elaborate progression and money mgm, but if you look at how often W happens after a previous run's W this shows better % (76% in this case, you'll have to test yourself to see if its common or just coincidence). In the above example it would be profitable flat betting if you'd only bet based on previous run result for each DozCol. I might test more or I might not, just wanted to show that same logic as Turbo uses can be applied to many other "variants", whether it can be exploited it has to be tested. Good Luck.