D’Alembert System

“Add a unit to your last bet if you lose and remove a unit if you win. Best on even money 1:1 bets ”
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1 vote, average: 3.00 out of 51 vote, average: 3.00 out of 51 vote, average: 3.00 out of 51 vote, average: 3.00 out of 51 vote, average: 3.00 out of 5
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5 votes, average: 2.80 out of 55 votes, average: 2.80 out of 55 votes, average: 2.80 out of 55 votes, average: 2.80 out of 55 votes, average: 2.80 out of 5

This is a simple system that can be used for even money betting (eg red/black). This is based on our main man and general French maths guru Jean Le Rond d’Alembert’s theory of equilibrium which is basically the following: if you have 2 events with an equal chance of happening (eg red/black), and one outcome begins to dominate (you get alot of blacks for example), then the other outcome must dominate at some point in the future, in order for equilibrium to be restored.

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So basically, if you keep getting reds, you should switch to black, but you do it in a methodical fashion:

Essentially you add a unit to your last bet if you lose and remove a unit if you win, since a losing bet is more likely to come up under this theoy.

The theory works best when you have a even 50/50 result on even money bets over the duration of your session- so if you stick at the table for 100 bets and you are betting on odd/even, you are betting that you are going to see 50 even and 50 odd.

Of course this may not be the case, even over 100 bets. You might get a run of even numbers at the start of your session and find that the rest of the session goes with odd.

For example, if you bet 3 on black and your bet loses, up your next bet to 4 black. If this wins, reduce your next bet back down to 3. By increasing your stake when you lose, the aim is to recover your loss and make profit.

For this system to work you would need an even spread of the even odds bets, i.e. no long runs of either even or odds bet.

And then of course you have the pesky 0 pocket! This means that your odds on so called “even” money bets are actually less than 50/50.

As with all roulette systems, we advise small tests to see how your luck runs with them. Be aware of the limitations of the system (knowledge is power!) and understand the maths behind the idea (ie the probabilities). This system is not a sure way of beating the roulette table, but it will give you a system to play with and enable you to at least play methodically.

Again, the problem with this system is that a sequence of losing bets will sink you into a hole from which it will be difficult to crawl out of. Thanks Jean.

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1 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 5
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Full Specs

type Low Risk
cost Free
progression Negative