# Betting System Game Guide

## Understand the D'Alembert Betting System

Understand the D'Alembert betting system and the Contra D'Alembert betting system before beginning play.

## Understanding the D'Alembert Betting System

The D'Alembert betting system is a negative progression betting system that is fairly simple to understand and implement.  In order to understand the D'Alembert betting system, it is necessary to understand what a negative progression betting system is.  In a negative progression betting system, bets are raised when a round is lost, and lowered when a round is won.

## The Basic D'Alembert Concept and How to Do It

Every time a player loses a round, the player will raise their bets by one unit.  A unit is the amount of money used for placing a bet.  The player will decide what the unit is.  For example, one unit could equal \$10.  Therefore, if the player had bet one unit on the first round, and they lost the round, they will then bet \$20 on the next round.

Every time a player wins a round, the player will lower their bet by only one unit. The D'Alembert Betting System can be played as an insurance system.  This is done by putting aside the units that have just been taken off after a win, and keeping them aside!  When you decreas the size of your bet when you win, especially if it follows a higher bet beforehand, you are keeping aside some of the profit from your winning round.

In order to play the D'Alembert betting system, the player needs a fairly large bankroll.  Without having a large bankroll, the losses made may not be able to be recouped and the player could have rather large losses.  This system helps to ensure (or should we say insure) a win after a losing streak.

Basically explained, this system leads to many smaller wins and less chance of bigger losses.

## Sample of a Betting Run Using the D'Alembert System

Number of Units Bet

## An Opposite or Contrary System for D'Alembert

Many betting systems can be played the way they were originally set out to be played, or they can be played exactly opposite to their original plans.  The "opposite" system for D'Alembert is sometimes referred to as the Contra D'Alembert system.  When playing this system, the player will increase their bet after winning a round, and decrease it after losing a round.  This translates into less big wins, and more small losses.  The risk with this system is that even after a run of wins, one loss can lose most of the hard-earned winnings that were accumulated.

## Sample of a Betting Run Using the Contra D'Alembert System

Number of Units Bet