Any sharp player can chose a special number and adds 4 consecutive ones on each side thus having formed a 9 number neighbor section .
For recreational purposes only. Play at your own risk .
now this one I like!!
Christian Kaisan , one of the sharpest European professional roulette players is applying this strategy.
Just google in Christian Kaisan you tube and you shall see.I
Interesting video with him at the Wiesbaden casino .