Roulette is a game of chance that has brought glamour, mystery and excitement to casino-goers since the 17th century. Its rules are relatively simple, but it has a surprising depth for serious players who employ the right strategies. While it is not a good idea to bet large sums of money on individual numbers, betting on “outside” groups of numbers can lower the house edge and increase your chances of winning.
In a casino, the wheel is spun by a croupier and a small white ball is sent flying into one of 36 compartments that appear on the surface. The numbers, ranging from 1 to 36 (on European-style wheels) and two green compartments marked 0 and 00 on American wheels, alternate in color between red and black and are spaced nonconsecutively. In addition, a number may be odd or even, high or low. The player’s goal is to predict which compartment the ball will land in.
Although fanciful tales abound, the origin of the game is generally accepted to be based on older French games of hoca and portique. Its present layout and wheel structure were developed in the late 18th century, after which it became popular throughout Europe.
The game made its way to the United States in the 19th century, where it was adopted by gambling dens and adapted by professional gamblers, who modified the wheel to prevent cheating devices from being hidden. A double-zero wheel was introduced, as were standardized betting positions on the table and a simplified betting system. These changes helped roulette gain popularity in the American casinos.
A specialized version of the game is played in some philatelic clubs, where players bet on a single number or various groupings of numbers. There is also a “Dozens” bet, which pays 2-1 for each bet made on the first, second or third of the twelve numbers. Besides the main bets, players can make side bets such as split bets and tier bets. Side bets pay only if the ball hits those specific numbers, but they provide much more flexibility than primary bets. However, the majority of players only use primary bets, as they are the most profitable. Side bets are a bit more difficult to master, but can be rewarding if you have the patience to learn them. The most effective strategy is to combine the three types of bets. This will maximize your profits and minimize your losses.