How it works
Write down a sequence — the classic starter is 1-2-3. Every bet is the first number plus the last. Win: cross both off. Lose: write the amount you just lost on the end of the line. Cross off the whole line and you’ve won its original total (here, 6 units).
| Your line | You bet | Win → | Lose → |
|---|---|---|---|
| 1-2-3 | 4 (1+3) | 2 left | 1-2-3-4 |
| 2 | 2 (lone number) | Line cleared: +6 total | 2-2 |
| 1-2-3-4 | 5 (1+4) | 2-3 left | 1-2-3-4-5 |
A worked example
1 unit = $100, line 1-2-3, target +6 units ($600):
Notice the shape: wins shorten the line by two, losses grow it by one — so you only need to win about a third of your bets to clear it. Seductive. But each added number is the size of a whole lost bet, so the line’s ends — and your stakes — swell fast in a losing run.
The honest math
Clearing a 1-2-3 line nets +6 units and happens often. But run the cold-shoe scenario: six losses from the start and the line reads 1-2-3-4-5-6-7-8 — you’re betting 9 units, you’re 27 units down, and the line still demands six more crossed-off numbers. The “win a third of your bets” arithmetic hides that the bets you must win keep getting bigger, into the same 1.06% edge as always.
When to use it
- If you genuinely enjoy the bookkeeping — it’s the most engaging system to run, which has entertainment value.
- With a short, cheap line (1-1-2 beats 1-2-3) and a line-abandon rule: if the line ever holds 8 numbers, tear it up and eat the loss.
- On Banker, with the stop-losses from the bankroll guide overriding everything.
Pros & cons
What the bro likes
- Clear target per line; satisfying to run
- Only needs ~⅓ of bets won to clear a line
- Flexible — you design the starting line
- Short lines keep early stakes tiny
What to watch
- Losing runs inflate both the line and the stakes
- One bad shoe can demand hours of grinding to clear
- Easy to “just extend the line” — discipline leak
- House edge untouched; tail risk is brutal
How it compares
| This system | The 1-3-2-6 | The Martingale | |
|---|---|---|---|
| Type | Cancellation system | Positive progression | Negative progression |
| Win rate needed | ~33% of bets | Streak-dependent | ~50% + survival |
| Tail risk | Heavy — lines snowball | Capped at −1/cycle | Catastrophic |
| Guide | You’re here | Read → | Read → |
Quick questions
Why do people swear by the Labouchère?
Because most lines clear, so the system delivers frequent small “proofs” that it works. The rare line that snowballs takes back everything — survivorship bias does the marketing.
What’s the reverse Labouchère?
The same bookkeeping flipped: add to the line on wins, cross off on losses — chasing streaks instead of losses. Friendlier tail, same house edge, same verdict.
What line should a beginner start with?
1-1-2 — a 4-unit target with 2-unit opening bets. And write the abandon rule on the same piece of paper: 8 numbers = walk away.