The D'Alembert Betting System
D'Alembert's strategy is a financial system for distributing the bankroll in sports betting and other gambling. The system refers to progressions - the size of the bet changes depending on the previous results. D'Alembert's strategy is more adequate than the classic dogon, which we discussed in one of the past materials. But first things first.
What is the essence of d'Alembert's strategy
The strategy is based on the theory that each failure increases the chances of success on the next repetition. Therefore, if the bet is defeated, it is proposed to increase its size, and if it passes, on the contrary, to lower it. The underlying theory itself is rather dubious, so the strategy itself is not particularly consistent. Which, however, is not surprising, because these works are almost 300 years old.
Mr. D'Alembert in person
An example of using the strategy
The game bankroll is divided into a number of parts. The more there are, the longer the bank will live. Minimum number of parts: 30, but ideally 100 or even more.
The first bet is made on one part of the pot, the size of the subsequent ones depends on the outcome of the bet. If we lose, we increase the size of the bet by one more part, if we win, we return to the previous level.
For example, our bank is equal to 60,000 rubles, and we have determined the step size of 2,000 rubles for the outcome:
- №1: win “Napoli” with odds 2.20, bet 2000 rubles, loss;
- №2: TB (2.5) in the match “Cadiz” - “Barcelona” with odds 1.95, bet 4000 rubles, loss;
- №3: H1 (-4.5) in the NBA “Denver” - “Clippers” match for 2.02, the bet is 6000 rubles, after this loss the pot has 48000 rubles left;
- №4: X2 to “Wolverhampton” in the match against “Leicester” for 2.20, the bet is 8000 rubles, the win is 57600 rubles in the pot;
- №5: TM (1.5) in the match between “Juventus” and “Torino” for 2.45 , the amount of the bet is 6000 rubles, the winning, the pot has become 66300 rubles.
In total, for five bets, we made a profit of 6300 rubles when passing two out of five. But at the same time, at the fourth step, they had a drawdown of a third of the pot. And if she had not entered, then one more sixth would have to be bet, in total, half of all funds. And with the fifth loss in a row, 70% would have been involved.
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In general, when dividing the bank into 30 parts, we get only seven full steps, as in the classic dogon. We already figured out that getting 6-7 pockets in a row with equally probable chances is a common thing, one might even say inevitable. Do you want to please the bookmakers? Forward.
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A more adequate example of using the strategy
Let's try to calculate an example with dividing the bank into 100 parts, and at the same time with a different sequence of wins and losses.
- №1: Napoli wins with odds 2.20, bet amount 600 rubles, loss;
- №2: TB (2.5) in the match “Cadiz” - Barcelona with odds 1.95, bet 1200 rubles, win , the pot is now 60540 rubles;
- №3: H1 (-4.5) in the NBA “Denver” - “Clippers” match for 2.02, bet 600 rubles, loss;
- №4: X2 on “Wolverhampton” in the match against “Leicester” for 2.20, the amount of the bet is 1200 rubles, the winnings, the pot has become 61,380 rubles;
- №5: TM (1.5) in the match between “Juventus” and “Torino” for 2.45, bet 600 rubles, loss, the pot was 60,780 rubles.
There is also a certain plus when two out of five bets are passable, but not so impressive - just a little more than the initial bet, less than 1.5% of the bank. We did not get terrible drawdowns here, but still, if we lost all five bets, then the total minus would be 600 + 1200 + 1800 + 2400 + 3000 = 9000 rubles - 15% of the starting amount.
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Playing with a 100-split pot is, of course, less aggressive than the classic dogon, but still quite dangerous. You can hold out in this format for a long time, because it takes 14 steps to lose the entire pot. More precisely - 13, the pot will not be enough for a full 14th step, but you can compensate for this by playing at the end of the increased coefficients.
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