The D'Alembert Betting System
The D’Alembert betting system was named after Jean de Rond D’Alembert, a French mathematician of the 1700s. Interestingly, the system was named after him because he incorrectly argued that the probability of a coin landing heads increased every time it came up tails.
The betting system is similar to the Martingale system because it increases the size of a bet by one unit every time the bet loses. Every time a bet wins, it is reduced by one unit. So in a game of red or black on roulette, your first bet would be $10 and if it lost, your next bet would be $20 and if that one lost, your next bet would be $30.
By using this system, your winning bets are always bigger than your losing bets because you increase the size of your bet every time until it wins. The problem with this system is that it actually doesn't do anything to increase your edge against the casino.
In even money bets like the ones found in roulette and craps, the house advantage stays the same no matter how you size your bet. Like the Martingale system, the D’Alembert system fails to provide any advantage over the house.
The only thing the D’Alembert system does is increase your bets to larger sizes than you would normally be comfortable with otherwise. It's the type of system that will constantly have you increase the sizes of your bets and lose more money to the house.
It sounds like a good system to new gamblers at first glance, but don't let it fool you. There are a lot of people out there trying to sell these guaranteed gambling systems but not a single one works. If they did, every casino in the world would be scrambling to dismantle its roulette wheels and craps tables.
Instead of falling for the promises of these salesmen, use your money to enjoy yourself more at the casino. There's nothing wrong with a little gambling or even using a system like this if you don't expect guaranteed wins out of it. The house edge is built into the rules of the game and the size of your bet can't change that.
The best way to get the most out of your money at the casino is to play even money bets, keep your bets small and enjoy your time. Casinos are a form of entertainment and if you count your losses there as the price of admission, you'll be a lot happier. If you think about it like that, the times you win will be that much sweeter.