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Blackjack Betting Systems: The D'Alembert |
In blackjack, a progressive betting system is a strategy in which you decide how much to bet depending on whether you've just won or just lost the previous blackjack hand.
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These blackjack betting systems can usually be categorized as "positive" or "negative." The positive systems are the ones in which the player raises his bet after winning, and the negative systems are the ones in which he raises his bet after losing.
In the world of negative progressive betting systems, the "Martingale" is considered to be the Big Daddy of them all. The D'Alembert betting system is a simple system, which is based on the tenets of the Martingale with a few minor changes. When you use the D'Alembert when playing blackjack, you will raise your bet one unit after each losing hand and you will lower your bet by one unit after you win.
The D'Alembert progressive betting system is named after Jean le Rond D'Alembert, an 18th-century French mathematician, physicist, and philosopher. One of D'Alembert's theories was based on the Law of Equilibrium, which claims a long-term balance of successes and failures over the course of a series of events. Therefore, according to this theory, you have a higher probability of a win after losing, and a higher probability of a loss after winning. But the key word here is "long-term." In casino gambling, there is no longevity: wins and losses cover a much shorter span of time. D'Alembert's theory does not really apply to the gambling table but, nonetheless, it has become a very popular progressive betting system, also known as the "Pyramid System." It is used most often and famously in the games of baccarat and roulette, but it is also widely used as a blackjack betting system. There is also a Contra-D'Alembert system, which is the positive version of the classic D'Alembert.
When used in blackjack gambling, the D'Alembert betting system requires players to raise (by one unit) their bets after each loss, while lowering (by one unit) their bets after each win. As mentioned, the D'Alembert system was originally designed for the roulette table, since it's a risky progressive betting system and roulette is a game of chance, in any case. As with any progressive betting system, one must proceed with caution when using the D'Alembert; on the other hand it's considered a lot less dangerous than the Martingale system (whereby you double your bets instead of always raising them by one unit). The best aspect of the D'Alembert system is that it's easy to follow and understand. |
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As an example of how the D'Alembert system works, let's say you're at the blackjack table and there's a $5 minimum (which is considered one "unit"). You start off by betting $5. If you lose, your second bet would be $10 (2 units). If you win, your next bet would be $5 (back to the original 1-unit bet) but if you lose your next bet would be $15. If you win after that, you then bet $10 (you only go down one "unit," not to the original bet, in this case). All wins or losses are rewarded or punished by a one-unit decrease or increase, respectively.
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