What Is the Labouchere System?

The Labouchere system, also known as the cancellation system or split martingale, is a negative progression betting strategy that uses a predetermined sequence of numbers to determine stake sizes. Rather than simply doubling your bet after a loss like the Martingale system, the Labouchere system involves writing down a list of numbers that represent your desired profit target, then betting the sum of the first and last numbers in that sequence. When you win, you cancel (cross off) those two numbers. When you lose, you add the stake amount to the end of the sequence and continue. The system continues until all numbers are cancelled (indicating profit) or your bankroll is exhausted.

The core principle behind the Labouchere system is elegantly simple: you only need to win approximately one-third of your bets to achieve your profit target, assuming you manage the sequence correctly. This mathematical advantage—at least in theory—makes it more appealing than systems requiring a higher win rate.

Definition and Core Mechanics

The Labouchere system is fundamentally a staking plan rather than a predictive strategy. It doesn't attempt to predict outcomes or beat the house edge; instead, it provides a structured method for managing bet sizes based on a predetermined profit goal. The system works exclusively with even-money bets—wagers that pay out at 1:1 odds, such as red/black in roulette or pass/don't pass in craps.

Here's how it works in its most basic form:

1. Define your profit target (how much you want to win)
2. Create a sequence of numbers that sum to your profit target
3. Bet the sum of the first and last numbers in your sequence
4. If you win, cross off those two numbers and repeat with the remaining sequence
5. If you lose, add the stake amount to the end of the sequence and repeat
6. Continue until the sequence is complete (all numbers cancelled) or you run out of money

The beauty of this system lies in its flexibility. You control the sequence length, the numbers used, and your profit target. A conservative bettor might create a longer sequence with smaller numbers, while an aggressive bettor might use larger numbers and fewer of them.

Why Is It Called the "Cancellation" System?

The term "cancellation system" refers to the core mechanic of crossing off (cancelling) numbers from your sequence. Each winning bet allows you to cancel two numbers—the first and last. This visual representation makes it easy to track your progress toward your profit goal. The cancellation method also explains why it's sometimes called the "split martingale"—unlike the traditional Martingale system that doubles bets, Labouchere "splits" the progression by cancelling numbers rather than compounding losses.

Where Did the Labouchere System Originate?

The Labouchere system has a fascinating history intertwined with a controversial Victorian-era figure and a French mathematical genius whose contribution was nearly lost to time.

Henry Labouchere: The Man Behind the Name (1831–1912)

The Labouchere system takes its name from Henry Du Pré Labouchere, a British politician, journalist, playwright, and theatre owner who lived during the Victorian and Edwardian eras. Born on November 9, 1831, into a wealthy and well-connected family, Labouchere was anything but a conventional gentleman.

Labouchere's career was remarkably diverse and often controversial. He served as a diplomat, representing Britain in the United States during the 1850s, where he earned a reputation for stirring up political scandal and social gossip rather than conducting traditional diplomatic business. He later pivoted to journalism, founding the newspaper Truth in 1877, which became known for exposing fraud, corruption, and scandal in British society—essentially the Victorian equivalent of investigative journalism.

Beyond politics and journalism, Labouchere was a passionate theatre enthusiast and eventually became a theatre owner. He was also a committed radical and liberal who campaigned against war and animal cruelty. However, his legacy is also marked by significant controversy: in 1885, he introduced the Labouchere Amendment, a bill that criminalized male homosexuality in Britain. This legislation would later be used to prosecute and imprison Oscar Wilde in 1895, making Labouchere's name forever associated with one of the darkest chapters in British legal history.

Despite his controversial political views, Labouchere was above all a passionate gambler. He was particularly devoted to roulette and spent considerable time at European casinos, where he developed and refined his betting system. His system became so well-known among gamblers that it eventually bore his name, cementing his place in gambling history.

The True Origin: Marquis de Condorcet's Mathematical Discovery

Here's where the story takes an unexpected turn: Labouchere did not actually invent the system that bears his name. This revelation came from a biography of Labouchere written by his grandson in 1914, after Labouchere's death in 1912. According to the biography, Labouchere stumbled upon the mathematical formula in a letter written by French mathematician Marie Jean Antoine Nicolas de Caritat, Marquis de Condorcet (1743–1794), who lived more than a century before Labouchere.

Condorcet was a prominent Enlightenment philosopher and mathematician known for his work in probability theory, voting systems, and social mathematics. While Condorcet never gambled or promoted his formula as a gambling strategy, he had developed the mathematical principle underlying the cancellation system as a theoretical exercise in probability and sequence management. Condorcet's genius was in recognizing that a structured sequence of numbers could be managed in a way that required only a modest win rate to achieve a predetermined profit.

The irony is delicious: Labouchere, despite not inventing the system, became so famous for using and promoting it that the mathematical discovery of an 18th-century French intellectual became forever known by the name of a 19th-century British politician. This historical quirk underscores an important lesson—sometimes in gambling and betting history, it's not the inventor but the popularizer who gets remembered.

Evolution from Roulette to Multiple Betting Games

When Labouchere first employed the system in the mid-1800s, it was exclusively used on roulette outside bets—specifically, bets like red/black, odd/even, and high/low that offer nearly 50/50 odds (technically 48.65% on a single-zero wheel due to the green 0). These even-money bets were ideal for the system's mathematical foundation.

Over time, the Labouchere system's application expanded far beyond roulette. Gamblers discovered that the system could be adapted to other casino games and betting scenarios that offered even-money payouts. Today, the Labouchere system is used in:

• Blackjack: Betting on player vs. dealer outcomes with low house edge
• Baccarat: Betting on banker or player hands
• Craps: Pass/Don't Pass line bets and come/don't come bets
• Sports betting: On outcomes with near-even odds
• Bingo and other games: Wherever even-money bets are available

This evolution reflects the system's fundamental flexibility—it's not tied to any specific game but rather to the mathematical principle of managing sequences for even-money bets.

How Does the Labouchere System Work? Step-by-Step Guide

Understanding the Labouchere system requires moving from theory to practice. Let's break down exactly how to set up and execute the system.

Setting Up Your Sequence

The first step in using the Labouchere system is defining your profit target—the amount of money you want to win before you stop playing. This is crucial because your entire sequence is built around this target.

Step 1: Define Your Profit Target

Let's say you want to win £50. This is your profit goal.

Step 2: Divide Your Target by 10

Take your profit target and divide it by 10:

• £50 ÷ 10 = £5

Step 3: Create Your Sequence

Write down this quotient (£5) ten times horizontally:

• 5-5-5-5-5-5-5-5-5-5

The sum of these numbers equals your profit target: 5 × 10 = £50.

Alternative Approach: Some bettors prefer to create sequences differently. Instead of dividing by 10, you might create a sequence like:

• 1-2-3-4-5-6-7-8-9-10 (sum = £55)
• 2-4-6-8-10-12-14-16-18-20 (sum = £110)
• 5-5-5-5 (sum = £20)

The flexibility is intentional. Shorter sequences complete faster but require larger bets. Longer sequences take more time but involve smaller individual bets.

Step 4: Consider Your Bankroll

Before committing to your sequence, ensure your bankroll (total betting capital) can sustain potential losing streaks. A common recommendation is to have a bankroll at least 10-20 times your profit target. If your profit target is £50, you should ideally have £500–£1,000 available for betting.

The Betting Process: Win, Lose, and Adjust

Once your sequence is established, the betting process is straightforward, though it requires discipline and attention to detail.

On Each Bet:

1. Identify the first and last numbers in your remaining sequence
2. Bet the sum of those two numbers
3. Place your bet on an even-money outcome (red/black in roulette, for example)
4. Record the result

If You Win:

• Cross off both the first and last numbers from your sequence
• Move to the new first and last numbers
• Place your next bet

If You Lose:

• Do NOT cross off any numbers
• Add the amount you just lost to the end of your sequence
• The sequence grows, and your next bet will be larger
• Place your next bet with the new first and last numbers

Special Case - One Number Remaining: If you reach a point where only one number remains in your sequence, you bet that single number on your next bet.

Special Case - Insufficient Bankroll: If your bankroll is positive but insufficient to cover the sum of the first and last numbers, you have two options:

1. Bet whatever remaining bankroll you have
2. Walk away and accept the loss

Let's see this in action with a concrete example.

Practical Example: The Labouchere System in Action

To truly understand the Labouchere system, let's walk through a complete betting sequence with realistic wins and losses.

Initial Setup:

• Profit Target: £30
• Sequence: 3-3-3-3-3-3-3-3-3-3 (sum = £30)
• Bankroll: £300

Result: After 10 bets (6 wins, 4 losses), the sequence is complete. Total profit: £30 (profit target achieved). Total wagered: £72. Net profit: £30 − £72 = (net loss if we count stakes), but the system achieved its target of £30 profit from winning bets.

This example illustrates several key points:

1. You don't need to win every bet—in this example, 6 wins out of 10 bets (60%) was sufficient, though the system only theoretically requires 33%.
2. Losing streaks grow your bets—notice how after losses, the sequence extended and required larger stakes.
3. The system can complete relatively quickly—in this example, just 10 bets achieved the £30 target.
4. Discipline is essential—you must resist the temptation to deviate from your sequence.

What Games Can You Use the Labouchere System On?

The Labouchere system isn't tied to any single game. Instead, it works on any betting scenario that offers even-money payouts (1:1 odds). However, the suitability of the system varies depending on the game's house edge and the availability of appropriate betting markets.

Roulette: The Original Application

Roulette is where the Labouchere system originated, and it remains the most popular application. The system works best on outside bets:

• Red/Black: Betting on the color of the next spin. On a single-zero wheel, this offers a 48.65% win probability (18 red + 18 black out of 37 total numbers).
• Odd/Even: Betting on whether the next number will be odd or even. Same 48.65% probability.
• High/Low: Betting on whether the number will be 1–18 (low) or 19–36 (high). Again, 48.65% probability.

These bets are ideal for Labouchere because they're as close to 50/50 as casino gambling gets. The house edge on these bets is only 2.7% on a single-zero wheel (or 5.26% on American double-zero wheels), making them mathematically suitable for the system.

Important note: The Labouchere system doesn't overcome the house edge—it simply provides a structured way to manage your bets. Over time, the house edge will grind away at your bankroll, just as it does with any betting system.

Blackjack

Blackjack is an excellent candidate for the Labouchere system because it has one of the lowest house edges in casino gaming (around 0.5–1% with basic strategy). You can apply the system to:

• Player vs. Dealer outcomes: Betting on whether you'll beat the dealer
• Push/Win/Loss sequences: Using the system to manage a series of hands

The low house edge makes blackjack more mathematically favorable for systems like Labouchere than roulette. However, blackjack's variable odds (some hands pay 1.5:1 for blackjack) make it less ideal than pure even-money bets.

Baccarat

Baccarat is another casino game where the Labouchere system thrives. The system works well on:

• Banker bet: Betting that the banker's hand will win (pays 1:1 after a 5% commission, effectively 0.95:1)
• Player bet: Betting that the player's hand will win (pays 1:1)

Baccarat's house edge is approximately 1.06% on banker bets and 1.24% on player bets, making it slightly more favorable than roulette for the Labouchere system.

Craps

Craps offers several even-money betting options:

• Pass line: Betting that the shooter will win (house edge: 1.4%)
• Don't Pass: Betting against the shooter (house edge: 1.36%)
• Come: Betting on individual point outcomes (house edge: 1.4%)
• Don't Come: Betting against individual points (house edge: 1.36%)

These bets have low house edges and are well-suited to the Labouchere system.

Sports Betting

The Labouchere system can theoretically be applied to sports betting, but with important caveats:

• Finding suitable odds: You need to identify bets with odds close to 50/50 (around -110 or -120 in American odds). These might include betting on favorites in competitive matchups or wagering on outcomes with balanced action.
• Avoiding overconfidence: Sports betting introduces additional variables (injuries, weather, team dynamics) that pure chance games don't have.
• Bankroll management: A losing streak in sports betting can be particularly damaging because losing streaks often correlate with poor judgment or changing conditions.

While the Labouchere system can be used for sports betting, many experts recommend against it. The system's mathematical foundation assumes independent, identically distributed outcomes—an assumption that doesn't always hold in sports.

Pros and Cons of the Labouchere System

Like all betting systems, the Labouchere system has genuine advantages and serious limitations. Understanding both is crucial before committing to the strategy.

Advantages of the Labouchere System

1. Low Initial Stakes Unlike the Martingale system, which doubles bets after every loss, the Labouchere system starts with relatively small stakes. If you create a 10-number sequence with a £50 profit target, your initial bet is only £10 (£5+£5). This allows you to play longer on a fixed bankroll.

2. Requires Only a ~33% Win Rate Theoretically, you only need to win about one-third of your bets to achieve your profit target. This is more forgiving than systems requiring a 50% win rate. In practice, with variance, you'll often need a higher win rate, but the mathematical foundation is sound.

3. Flexible and Customizable You control every aspect: profit target, sequence length, bet sizes, and bankroll allocation. This flexibility allows you to tailor the system to your risk tolerance and financial situation.

4. Provides Structure and Discipline For some bettors, the Labouchere system's rigid structure eliminates emotional decision-making. Instead of deciding bet sizes on the fly, you follow your sequence. This can be psychologically beneficial for undisciplined gamblers.

5. Transparent Progress Tracking The visual representation of your sequence—watching numbers get crossed off—provides clear progress toward your goal. This can be motivating and helps you stay focused.

Disadvantages of the Labouchere System

1. Escalating Bets During Losing Streaks The system's fatal flaw is that losing streaks cause your sequence to grow, requiring increasingly larger bets to continue. A prolonged losing streak can quickly exhaust your bankroll. For example, a series of 10 consecutive losses can turn a manageable sequence into one requiring £100+ bets.

2. Doesn't Beat the House Edge This is the most important limitation: the Labouchere system does not overcome the house edge. The house edge in roulette (2.7% single-zero, 5.26% double-zero) or other games is a mathematical certainty over time. The system merely structures your bets; it doesn't change the underlying odds.

3. High Bankroll Requirements To weather typical losing streaks, you need a substantial bankroll—ideally 10–20 times your profit target. If your profit target is £100, you should have £1,000–£2,000 available. This is a significant commitment for a potentially modest profit.

4. Complexity and Application Errors The Labouchere system is more complex than simpler systems like Martingale or D'Alembert. Tracking your sequence, calculating bets, and managing the progression requires attention and discipline. A single error in tracking can derail the entire system.

5. Time-Consuming Completing a full sequence can take many hours or even multiple sessions. If your profit target is £50 with a 10-number sequence, you might need 20–50 bets to complete it, depending on your win rate.

6. False Sense of Control The system's structure can create an illusion of control or predictability. Some bettors become overconfident, believing the system guarantees profits. It doesn't. Variance and house edge will eventually grind down any bankroll.

7. Psychological Challenges Watching your sequence grow during a losing streak can be psychologically taxing. The increasing bet sizes can trigger panic or desperate betting decisions, exactly what the system is supposed to prevent.

Common Misconceptions About the Labouchere System

Misconception 1: "The system guarantees a profit." False. The system provides a structure for managing bets, but it cannot overcome the house edge. Over time, you will lose money in games with a house edge.

Misconception 2: "You only need to win 33% to profit." Partially true. Theoretically, a 33% win rate is sufficient, but due to variance and the specific sequence you create, you'll often need a higher win rate in practice. Additionally, the house edge means even 50% wins aren't enough to break even long-term.

Misconception 3: "The system works better than other betting systems." Not necessarily. All negative progression systems (Labouchere, Martingale, D'Alembert) have similar fundamental limitations. None overcome the house edge. The Labouchere system's advantage is lower initial stakes, not superior profitability.

Misconception 4: "If I just stick to the system, I'll eventually win." False. Losing streaks can exhaust your bankroll before you achieve your profit target. The system doesn't protect against catastrophic losses; it merely delays them.

What Is the Reverse Labouchere System?

If the standard Labouchere system is a negative progression strategy (increasing bets after losses), the Reverse Labouchere system is its opposite: a positive progression strategy (increasing bets after wins).

How Reverse Progression Works

The Reverse Labouchere system inverts the cancellation logic:

1. Create your sequence based on the amount you're willing to lose (not your profit target)
2. Bet the sum of the first and last numbers
3. If you LOSE, cancel those two numbers (opposite of standard Labouchere)
4. If you WIN, add the bet amount to the end of the sequence (opposite of standard Labouchere)
5. Continue until the sequence is complete (all numbers cancelled = you've lost your maximum) or you choose to stop (your profits are unlimited)

Example Reverse Labouchere Sequence:

• Risk tolerance: £20
• Sequence: 2-2-2-2-2-2-2-2-2-2 (sum = £20, your maximum loss)
• First bet: £4 (2+2)

In this example, after 4 bets (3 wins, 1 loss), you've made a profit. The beauty of the Reverse Labouchere is that you can stop whenever you want and keep your profits. There's no predetermined endpoint; you define when to walk away.

The Famous Norman Leigh Story (1966)

The most famous application of the Reverse Labouchere system occurred in 1966 when British businessman Norman Leigh organized a remarkable gambling expedition. Leigh placed a newspaper advertisement seeking 12 additional men to join him in an attempt to beat European casinos using the Reverse Labouchere system. He assembled a team of 13 men total (including himself) and descended on casinos in France, specifically targeting roulette.

The team applied the Reverse Labouchere system with remarkable discipline and bankroll management. Within two weeks, they had won substantial amounts of money—enough to be noticed by casino management. Recognizing the threat (and the system's apparent effectiveness), casinos across France blacklisted the entire team, refusing them entry.

The irony is exquisite: if the casinos had allowed them to continue playing, the law of large numbers and house edge would have eventually reclaimed the money. The casinos' decision to ban them actually locked in the team's profits. Leigh and his team walked away as winners, and their story was later documented in the book "Thirteen Against The Bank" (1966).

This famous case study is often cited as proof that the Reverse Labouchere system works. However, it's important to understand what actually happened:

1. Short-term variance: The team benefited from a lucky winning streak over a limited period.
2. Disciplined exit: They quit while ahead, rather than continuing until the house edge ground them down.
3. Casino response: The casinos' ban was a business decision, not an admission that the system beats the odds.

Over the long term, even the Reverse Labouchere system cannot overcome the house edge. Norman Leigh's team simply got lucky and had the wisdom to stop playing.

Reverse Labouchere vs. Standard Labouchere: Key Differences

The Reverse Labouchere system is often considered less risky than the standard version because your maximum loss is predetermined. However, it requires discipline to stop playing when you're ahead—a discipline many gamblers lack.

Variations and Modifications of the Labouchere System

While the standard Labouchere and Reverse Labouchere systems are the most common, bettors have developed numerous variations and modifications to address specific limitations or preferences.

Betting Caps and Limits

One of the most practical modifications is imposing a maximum bet limit on your sequence. For example:

• Standard Labouchere with a £50 profit target
• Maximum bet cap: £20

If your sequence requires a bet larger than £20, you simply bet £20 instead. This protects your bankroll from catastrophic losses during extended losing streaks. However, it also means you might not complete your sequence, as the cap prevents the system from functioning as designed.

Betting caps are a compromise between system discipline and bankroll protection.

Sequence Splitting

Another variation is splitting your sequence when losses accumulate. For example:

• Original sequence: 5-5-5-5-5-5-5-5-5-5
• After several losses, it becomes: 5-5-5-5-5-5-5-5-5-5-15-20-25
• At this point, you might decide to abandon the sequence and start a fresh one

Sequence splitting allows you to cut losses and begin again with a fresh perspective. While this deviates from the pure system, it can help preserve bankroll during severe losing streaks.

Hybrid Approaches

Some bettors combine the Labouchere system with other strategies:

• Labouchere + Flat Betting: Use Labouchere for a portion of your bets, then switch to flat betting (same bet every time) if losses accumulate
• Labouchere + Martingale: Use Labouchere as your primary system but apply Martingale-style doubling during specific sequences
• Labouchere + Kelly Criterion: Adjust your sequence based on Kelly Criterion bankroll management principles

These hybrids attempt to combine the advantages of multiple systems while mitigating their individual weaknesses. However, they also increase complexity and the potential for errors.

Does the Labouchere System Actually Work?

This is the question every bettor wants answered. The honest response is nuanced: the Labouchere system can produce short-term profits, but it cannot overcome the house edge over the long term.

The Mathematical Reality

Let's examine the mathematics:

Assumption: You're betting on roulette red/black with a 48.65% win probability (single-zero wheel).

Labouchere claim: You only need a 33% win rate to profit.

Reality check: With a 48.65% win rate, you'll achieve a profit more often than not in the short term. However, over thousands of bets, the house edge (2.7%) will gradually erode your bankroll. The 48.65% win rate is less than 50%, so mathematically, you're losing money on every bet (in expected value terms).

The math:

• Win rate: 48.65%
• Lose rate: 51.35%
• Expected value per £1 bet: (0.4865 × £1) + (0.5135 × -£1) = -£0.027
• Over 1,000 bets of £1 each: -£27 expected loss

The Labouchere system doesn't change this equation. It merely structures your bets differently. You might achieve your profit target in the short term, but if you keep playing, the house edge will eventually claim your profits and your bankroll.

Bankroll Requirements and Losing Streaks

The critical factor determining whether the Labouchere system "works" is your bankroll relative to your profit target.

Example:

• Profit target: £50
• Recommended bankroll: £500–£1,000
• Worst-case scenario: A losing streak that extends your sequence to require £100+ bets

If you have a £500 bankroll and hit an extended losing streak, you might face bets of £50, £75, £100, or more. A few unlucky spins could exhaust your entire bankroll before you complete your sequence.

The statistics:

• Probability of 5 consecutive losses on red/black: (51.35%)^5 = 3.5%
• Probability of 10 consecutive losses: (51.35%)^10 = 0.1%

While 10 consecutive losses are rare, they're not impossible. And even 5 consecutive losses can significantly grow your sequence and required bets.

Discipline and Emotional Control

The Labouchere system's success—to the extent it can succeed—depends entirely on your ability to:

1. Follow the sequence exactly without deviation
2. Accept losses without panic or desperation betting
3. Stop playing when you achieve your profit target
4. Walk away if your bankroll approaches dangerous levels

Most bettors fail at one or more of these points. When facing a losing streak with escalating bets, the psychological pressure is immense. Many abandon the system or make desperate changes that undermine it.

The honest assessment: The Labouchere system can produce profits in the short term, especially if you get lucky with winning streaks. However, it's a method for managing bets, not a system for beating the house. If you use it with discipline and quit while ahead, you might walk away a winner. But if you keep playing indefinitely, the house edge will eventually grind you down.

Frequently Asked Questions About the Labouchere System

What is the Labouchere system?

The Labouchere system is a negative progression betting strategy that uses a sequence of numbers to determine stake sizes. You bet the sum of the first and last numbers in your sequence, cancel numbers on wins, and add to the sequence on losses. The system is designed to achieve a predetermined profit target using a structured betting approach.

How do I start using the Labouchere system?

1. Define your profit target (e.g., £50)
2. Divide by 10 and create a sequence (e.g., 5-5-5-5-5-5-5-5-5-5)
3. Ensure you have adequate bankroll (10–20 times your profit target)
4. Bet the sum of the first and last numbers on an even-money bet
5. Cancel numbers on wins, add to the sequence on losses
6. Continue until the sequence is complete or you run out of money

Can I use the Labouchere system on sports betting?

Yes, but with caution. The system works best on outcomes with near-50/50 odds and independent outcomes. Sports betting introduces variables (injuries, team dynamics, public perception) that violate the system's assumptions. Most experts recommend against using Labouchere for sports betting.

What is the reverse Labouchere system?

The Reverse Labouchere system inverts the standard system: you cancel numbers on losses (instead of wins) and add to the sequence on wins (instead of losses). This is a positive progression system where your maximum loss is predetermined, but your profits are unlimited. You choose when to stop and keep your winnings.

Does the Labouchere system actually work?

The Labouchere system can produce short-term profits, especially if you're lucky with winning streaks. However, it cannot overcome the house edge over the long term. The system structures your bets but doesn't change the underlying odds. If you use it with discipline and quit while ahead, you might win. If you keep playing indefinitely, the house edge will eventually grind you down.

How much bankroll do I need for the Labouchere system?

A common recommendation is 10–20 times your profit target. If your profit target is £50, you should have £500–£1,000 available. This provides a buffer against losing streaks that cause your sequence to grow and require larger bets.

What's the difference between Labouchere and Martingale?

Martingale doubles your bet after every loss, leading to extremely rapid bet escalation and high bankroll requirements. Labouchere increases bets more gradually by adding to a sequence, allowing you to play longer on a fixed bankroll. Both are negative progression systems that cannot overcome the house edge.

Can the Labouchere system be used on blackjack?

Yes. Blackjack has a low house edge (0.5–1% with basic strategy), making it suitable for the Labouchere system. However, blackjack's variable odds (some hands pay 1.5:1 for blackjack) make it less ideal than pure even-money bets like roulette outside bets.

What happened with Norman Leigh and the Reverse Labouchere?

In 1966, Norman Leigh assembled a team of 13 men to use the Reverse Labouchere system on European roulette. Within two weeks, they won substantial amounts and were blacklisted from casinos in France. Their story demonstrates that short-term profits are possible, but also that casinos recognize and eliminate profitable betting teams.

Is the Labouchere system legal?

Yes, the Labouchere system is entirely legal. It's a betting strategy, not a form of cheating or card counting. Casinos cannot ban you for using the system, though they can ban you for other reasons (disruptive behavior, counting cards in blackjack, etc.).

What's the best sequence to use for the Labouchere system?

There's no universally "best" sequence. Your choice depends on your risk tolerance and bankroll:

• Conservative: Longer sequences with smaller numbers (e.g., 1-2-3-4-5-6-7-8-9-10)
• Moderate: Medium sequences with medium numbers (e.g., 5-5-5-5-5-5-5-5-5-5)
• Aggressive: Shorter sequences with larger numbers (e.g., 10-10-10-10)

Start with conservative sequences until you're comfortable with the system.

Can I use the Labouchere system on multiple games simultaneously?

Technically yes, but it's not recommended. Managing multiple sequences increases complexity and the potential for errors. Additionally, your bankroll would need to be split across multiple games, reducing your ability to weather losing streaks in any single game.

What's the house edge on games where I can use Labouchere?

• Roulette (red/black): 2.7% (single-zero) or 5.26% (double-zero)
• Blackjack: 0.5–1% (with basic strategy)
• Baccarat: 1.06% (banker) or 1.24% (player)
• Craps: 1.36–1.4% (pass/don't pass)

The house edge is a mathematical certainty over time. No betting system can overcome it.

How long does it take to complete a Labouchere sequence?

This depends on your win rate and sequence length. A simple sequence like 5-5-5-5 might complete in 10–20 bets (30 minutes to 1 hour). A longer sequence like 5-5-5-5-5-5-5-5-5-5 might require 30–100 bets (several hours or multiple sessions).

Should I use a betting cap with the Labouchere system?

Yes, many experts recommend setting a maximum bet limit (e.g., £50 maximum) to protect your bankroll during losing streaks. This deviates from the pure system but provides practical protection against catastrophic losses.

What's the psychological impact of using the Labouchere system?

The system can be psychologically challenging, especially during losing streaks when your sequence grows and required bets increase. The visual representation of your sequence (watching numbers get crossed off) can be motivating during winning periods but demoralizing during losses. Strong emotional discipline is essential.

Related Terms

• Martingale system
• D'Alembert system
• Paroli system
• Negative progression
• Positive progression
• House edge
• Bankroll management
• Even-money bets