If a bet wins, then the player who made it should drop that bet to one unit. Going further, with every spin, if a bet loses, then that player who made the bet should increase it by one step in the following progression: 1, 2, 3, 6, 12, 24, 48, 96, 192.If it loses, then player 1 will bet two units on the same thing and player 2 will bet one unit on the opposite. If the bet in step 3 wins, repeat it until it loses.

To start, player 1 bets one unit on any even money bet (red, black, odd, even, 1 to 18, 19 to 36).This bankroll will be shared between what I will call player 1 and player 2. The player should have a bankroll equal or greater to 384 units. The player should decide what his unit size, or minimum bet, is.Roulette, with opposite bets like red and black, is how I shall explain and analyze it. The system is meant to be played on even money bets where opposite betting is allowed.However, one person could do bet both sides, although he would look like a fool betting opposites. For this reason, it is meant to be played with a two-person team. Like all betting systems, not only doesn't it overcome the house edge, it doesn't even dent it. Much like the Martingale, you can expect it to usually win small, but lose it all back and more when you reach the maximum number of losses. It basically a modified nine-step Martingale. The Keefer Roulette System is a betting system promoted in a book by the same name.

Odds on double zero roulette