# D’Alembert system in Roulette.

Double Up,  Grade-up, etc are the strategies in the baccarat games.

There is for sure that Roulette has its own betting strategy, which is the D’Alembert system.  We will introduce this commonly used strategy.

The D’Alembert system is a betting method extended by D’Alembert’s formula in the game.

It was first discovered by a French mathematician while studying Newton’s first law of motion.  A law of a state of equilibrium that exists through the mutual resistance of two forces, external force and inertia

After that, there are more and more players putting it into their betting skills. It turns out to be the D’Alembert system that we know.

The basic concept of the D’Alembert system.

This system is similar to the Grade-up in the baccarat games

First, the player needs to set a “base bets”.  The amount of base bets is not an affixed number.  It can be adjusted based on different players’ principal and the risk management ability.

You can start placing bets on the Roulette after deciding the amount of the base bets and the adding or decreasing unit.

## The usage of the D’Alembert system.

Imagine that you are a player that is playing the Roulette.  If you win in the first round, you need to add one unit on your next bet.  If SuperAce88 win again, add one more unit on the next bet.

However, if you lose, you need to decrease one unit.  But, the decreasing amount cannot be lower than the base bets.

Otherwise, this calculation method will be unbalanced and lose in the end.