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Casino systems in roulette have their weaknesses

Broken chainIf you play regularly at a casino, you will quickly learn that you do eventually lose your money over time if you keep gambling the same amounts. You can read more about this in other articles here on the website.

Some people start to vary the size of their stakes in e.g. roulette games and hope that by betting large amounts in between, they might get lucky and win back the losses they lost through smaller bets. This is a very dangerous strategy and will in most cases not end positively for the individual casino player. In the following we will explain the most common systems used by casino players all over the world. Both systems are applicable at online and actual casinos alike, but we would NOT recommend this.

There are 2 basic types of gambling systems at casinos. One of them has a positive expectation and the other a negative expectation. With the positive expectation you try to benefit from hitting a series of wins. With negative expectation you try to pay for your losses by repeatedly increasing the stake again until you win back what you have lost.

The Martingale roulette system

It is a bit strange that this system has been given the name martingale as the system is in fact flaky. It is a negative expectation system, and in practice it quite simply does not work, even though it initially looks like a sensible way of earning a profit at a casino. There are many who unawares use the Martingale system when playing in a casino, and often without knowing the pitfalls.

The martingale system is so incredibly simple to apply, that pretty much anyone can learn how to use it. It is done in the following way.


Start by betting 2 dollars on red. If you win, you bet another 2 dollars on red. You continue betting 2 dollars on red for as long as you are winning. However, if you lose you double the amount to 4 dollars. If you lose you again you double the 4 dollars to 8 dollars. You keep doubling your stake every time you lose. If you lose 10 games in a row, your stake will increase as follows. $2, $4, $8, $16, $32, $64, $128, $256, $512, $1024(Ridiculously high sums!!!).

When you finally win, you start again with a bet of $2.


  • Sooner or later you will hit the casino’s stake limit. This means you can no longer follow the system.
  • Sooner or later you will reach your own financial limits and will not have the money to continue.
  • A casino has in e.g. roulette an advantage of 5.26%. This casino system, just like all other casino systems does not change this. If you want to win at a casino, you will have to be lucky. Read this website’s other article on luck and probability.

The D’Alembert roulette system

The D’Alembert system is less dangerous than the Martingale, but not by much if your aim is to improve your chances of winning at a casino. It is a positive expectation system and in practice works as follows:

  • You have to increase your stake by one unit every time you lose.
  • You have to reduce your stake by one unit every time you win.
  • You must never play with a stake lower than the one you started with.


We choose a stake, i.e. a unit of $2. We bet on red in roulette every time. W=win, L=lose.
L,L,L,L,W,W,L --->$2,L,$4,L, $6,L, $8,L, $10, W, $8, W, $6, L, $8 etc.


Computer simulations have shown that you will not win anything in the long run by using this strategy. You can however apply this method without the risk of losing all your money. What you really get from using this strategy is a lot of small winnings, which are then eaten up by large losses.

Our advice

There are some games, such as blackjack, where you can use a blackjack chart and thus significantly increase your chances of winning. You can read more about it elsewhere on this site. We actually recommend you use our guide on Advicehow YOU can significantly increase your advantage and thereby reduce the casino’s house edge by a sizeable amount. It is however mainly online casinos where you can benefit from our experience of beating the casino.

In roulette or slots and nearly all other casino games, it is more the entertainment value you look for when playing at a casino. Casino games are pure entertainment, similar to pools, lotteries, oddsets, online bingo and any other minor versions of games.

The best casino strategy in the most chance-based games is to vary what you play on. Spend 20 minutes on slots. Then try roulette for 30 minutes. Take a break for 20 minutes. Try video poker or play on a different slot. You might suddenly get lucky and win a large prize, while having had fun at the same time.

Edited by Henrik Jørgensen
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