Jean le Rond D’Alembert, a mathematician, physicist and philosopher introduced the theory that there is always an even number of successes and failures in a long term event. In simpler words, he meant that a player is more likely to win after a defeat and greater possibilities of losing after a win. This is only possible where there are consecutive long term events. The gambling world, impressed by his theory, introduced games on his names. One of them is the D’Alembert blackjack system. Even though the Alembert system is more popular for roulette and baccarat games, his theory is applied on the blackjack games as well.

The rules of this game are quite interesting and unique from the other card games. However, there are few similarities with the Martingale betting system. The winners are rewarded while the losers are punished. After every loss the player increases his bet by one unit, which is approximately two dollars, and when he wins he lowers the bet by one unit. For this reason it is also termed as negative betting system. For example, if the game starts with two dollars and the player losses, then his next bet would automatically rise to four dollars. But if he wins, his next bet would remain the same, which is two dollars. If he loses, his next bet would jump to six dollars. Winning the next round will lower his bet again to four dollars. In this manner, the game moves on. The game thus is not very complicated, but one should always play with caution. Critics of this progressive betting system claim that the theory is not properly applicable while playing in the casinos as it does not have a long term balance. Despite this flaw the D’Alembert blackjack system is extremely popular among the casino lovers.