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Roulette Prediction Formulas - Myths and Truths

Jul 03 , 2025

Roulette is, quite possibly, the most iconic casino game ever. The game first appeared in 17th-century France, and rumors say it was invented by Blaise Pascal himself. The connections between roulette and Pascal are akin to legend, but, in fact, the game took Europe (and later, the world) by storm. 


Roulette is a game of chance, meaning it’s impossible to predict where the ball will land. However, it has inspired mathematicians to develop prediction models since its early days. Do these models work, though? Keep reading and find out. 

Luck and Numbers

Many things have changed about roulette over its history. For instance, soon after it was brought to the United States in the early 18th century, it gained another zero. Betting options may vary according to the type of game (European, French, or American), but it’s still a game of chance at its core. 


However, if it’s impossible to devise a roulette prediction formula, it’s possible to adjust the betting strategy according to the risk appetite of each player. For this, it’s necessary to understand how the available betting options work. There are many ways to bet on roulette, and winning chances may vary greatly from one choice to another.


For instance, the so-called “even bets” (bets on red or black, odd or even, high or low numbers) have nearly 50% winning chances. Bets on dozens and columns are a bit riskier, with 32.4% chances each. Chances are considerably smaller for other options: choosing six numbers gives players 16.2% chances, while bets on single numbers have a 2.70% chance to materialize. 


The rule is simple regarding prizes: the riskier the bet, the higher the payout. Platforms like Bitcasino offer demo versions for registered clients, meaning it’s possible to try out those bets and stats for free. Indeed, playing free games is the best way to learn about new strategies and playing styles risk-free. 

Systematically Fun

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It should be clear by this point that “online tools” promising clear-cut prediction formulas are plainly lying. However, thanks to the multiple betting options and odds included in the game, mathematicians have been working since the 16th century on ways to improve their chances of scoring a profit in games of chance like roulette, the so-called “progressive betting systems.”


It all starts with choosing the value of the betting unit; all calculations are made based on this unit. There are many betting systems out there, but they will either be progressive or non-progressive. Progressive systems increase or decrease bets after a positive result, while the betting value remains unchanged in non-progressive options.


Here’s how the main betting systems work.  

Paroli System

The Paroli system is, quite possibly, the oldest betting system. Older than roulette itself, this system was invented in 16th-century Italy. According to it, players must double their base bet after a winning round. After three wins, bets must return to their initial value to secure profits. 


Likewise, bets must return to base value after losing a round. It’s a pretty conservative system, as it only doubles bets based on previous winnings, meaning that the original bankroll is fairly protected. 

D’Alembert Strategy

This strategy was created by the illustrious French mathematician Jean Le Rond D’Alembert in the 18th century. Here, players must increase their base bet by one unit every time they lose, attempting to compensate for previous losses when a prize comes up. 


However, when they do, bets should be reduced to lock in profits. Like most systems, D’Alembert only works for even bets. While it can lead to short-term profits, losses can quickly escalate during long losing streaks, especially when house edges are high.  

Martingale System

Here’s another system from 18th-century France. Martingale is a classic roulette strategy where players double their bet after each loss, aiming to recover previous losses with a single win. It’s simple but risky; losing streaks can quickly drain the bankroll. While it works well for short-term wins, casinos often have table limits that prevent infinite doubling. Players love its straightforward approach, but it’s a high-stakes gamble. 

Andrucci Strategy

The Andrucci Strategy is all about spotting patterns. Players track past spins, looking for "hot" numbers that repeat, then bet on them. It’s based on the idea that randomness has temporary trends. While fun, it’s not foolproof and can be risky. After all, roulette is still a game of chance. Some swear by it, but others call it wishful thinking. Either way, it adds excitement to the game without breaking the bank.

James Bond’s Strategy

James Bond’s roulette move is a fixed-bet system: spread chips across high numbers (19-36), a six-line (13-18), and zero as insurance. It covers over 2/3 of the wheel but requires a bigger bankroll. Wins aren’t huge, but losses are minimized. Inspired by 007 himself, it’s a stylish, low-risk approach. It’s perfect for players who prefer steady play over wild swings and for having a laugh when playing with friends.

Debunking Myths


There are many myths and misconceptions regarding online roulette; it’s understandable, given its complexity and popularity. It’s common to hear people say that online roulette is rigged, especially when they lose a bet. However, licensed and certified games use government RNG (random number generator) algorithms; even live dealers use RNG-controlled wheels, ensuring fairness in each result. 


While betting systems can be pretty clever, none can secure profits. Still, many players get over-reliant on them, often paying a hefty price for it. Such systems can help players with bankroll management but are powerless against losing streaks, which can occur anytime. Since each result is random, looking for patterns in previous results may not be so helpful.


Some people believe that dealers can affect the outcome of spins in live games, which is nonsense. Live dealer providers have many security and transparency measures in place to ensure it can’t happen. First-timers commonly mistake even bets for even money bets, which are not at all the same. 


Even money bets are when players have a 50/50 winning chance, while the odds for even bets range between 47.37% and 48.65%, depending on whether the table has one or two zeros. That’s why hedging bets doesn’t work either. For instance, betting on reds and blacks simultaneously covers nearly every possibility, but it all goes down the drain if the ball lands on a zero. Besides, even if the ball doesn’t land on a zero, one of the bets will be lost, meaning no profit will be made.   

The Last Spin

Roulette remains a game of pure chance, where no prediction formula or betting system can overcome the built-in house edge. While strategies like Martingale, D’Alembert, or Andrucci add structure to gameplay, none alter the fundamental odds. Progressive systems tempt with short-term gains but crumble under variance, while pattern-tracking relies on the gambler’s fallacy. 


Licensed platforms ensure fairness through RNGs and regulated wheels, debunking rigging myths. Even "smart" bets (like hedging red/black) fail against the inevitability of zeros. The only real edge lies in understanding probabilities: European wheels favor players slightly, but the house always wins long-term. 


Betting systems may manage bankrolls or amplify thrills, but they’re no substitute for luck. In the end, roulette’s charm is its unpredictability: a dance of risk and reward where math trumps magic, and entertainment outweighs false promises of profit.