This is a system that I like to call the single repeater but it is known elsewhere on the internet as law of a third and other such names. To begin with, if you spin a European roulette wheel 37 times, it is very unlikely that you will get 37 different numbers – there will be repeaters which means that some numbers will land more than once while others won’t land at all. To try and capitalise on this, you can bet on each number that lands and keep increasing your coverage on the table until you get a win.
If you do this immediately after the first spin, the cost can soon add up, so instead you can wait until you 8 different numbers in the last 8 spins. Then on the next spin, you would place a straight up bet on all 8 numbers. If you don’t win, meaning a new, ninth different number showed on the ninth spin, you would bet on these 9 numbers on the next spin. If a new, tenth number shows on the next spin, then you will bet on these 10 numbers on the next spin and so on. It would look a little like this after the first 8 spins –
Spin 9 – Place bets on the previous 8 numbers with the minimum bet of 1 – total bet of 8.
Spin 10 – Place bets on the previous 9 numbers – total bet is 17 including the 8 from the previous spin.
Spin 11 – Place bets on the previous 10 numbers – total bet is 27
Spin 12 – Increase bet to 2 on previous 11 numbers to cover previous losses – total bet is 49
Spin 13 – Increase bets to 3 on previous 12 numbers – total bet is 85
Spin 14 – Increase bets to 4 on previous 13 numbers – total bet is 137
Spin 15 – Increase bet to 7 on previous 14 numbers – total bet is 235
If you go any higher, it starts to get too risky, but you get the idea – you are constantly betting on all the previous numbers until you get a repeater. If you had the bankroll, you could go all the way up to spin 35 but to get to that point would require a huge bankroll and the amounts you would need to bet on each spin would probably exceed the table limits. The system is only a loser if you go to spin 36, at which point you would be covering too many numbers for it to mathematically add up because of the house edge. There’s also the fact that you probably wouldn’t have enough time between spins to bet the amounts that are required.
In any event, it’s an interesting idea and it may be worth playing around with it on free play games to fine tune it to your own budget and maybe even give it a go for real money with online games that allow 10p on single number bets to reduce the bankroll that you would need.