Most strategies for beating roulette cannot overcome the house edge, which varies from 1.35 percent to as high as 7.89 percent, dependent on the wheel and the type of bet placed. However, while I can make a true statement that "most strategies cannot overcome the house edge," roulette has been beaten using a number of surprisingly different approaches.
The most common approach is what I call the pure "systems approach". Here, betting a certain pattern such as "bet red after black shows for two consecutive wins," and using some kind of betting progression is the basis of the system.
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There are hundreds of these strategies and many of the strategies used in other casino games, such as craps or baccarat, were originated for roulette.
These strategies are nearly always condemned by many gambling experts as worthless in overcoming the house edge. Yet, we will present evidence that using strict betting rules, combined with a number of specific money management techniques can overcome the house edge, so long as the games are kept reasonably short and certain "stop-loss" measures are used.
In the next chapter, I completely cover these "Systems and Strategies" so that you will have a fairly complete understanding of the kind of thinking that has gone into developing these systems.
A second approach to beating the wheel entails looking for imperfections in the wheel itself. Because no mechanical device is ever perfectly constructed, these strategies are based on finding certain numbers or groups of numbers or even sections of the wheel where the hits are way out of proportion to what probability theory would indicate. If the hits are distorted enough, then making the appropriate wagers can overcome the house edge. Thus, the game is turned in favor of the player.
The downside of this approach is the amount of time required. Usually, at least several thousand roulette decisions have to be recorded to ascertain with a high degree of certainty that a wheel is biased.
Some people enjoy tracking wheels. If you are one of these people, you will be disappointed in the Roulette Strategy as it has nothing to do with finding biased roulette wheels.
The concept of finding a biased wheel applies only to physical roulette wheels. I have never heard of a biased roulette wheel in a virtual casino.
This approach is much too tedious for me. However, the concept behind wheel tracking can be used for short-term play. Here, certain numbers or groups of numbers are tracked for a very short time period. It is well known that over a period of 38 spins of a wheel, not every number will show. In fact, the odds against every number showing one time in 38 spins of a double-zero wheel are astronomical. What usually occurs is that about one-third of the numbers won't show at all, while some numbers will repeat two, three or even more times.