Martingale
Double your bet after every loss. One win recovers all previous losses and nets a single unit profit.
Overview
How It Works
Set your unit size
Choose a base bet — the smallest amount you'll wager each fresh sequence. A common rule of thumb: 1–2% of your session bankroll. With a 1,000-chip bankroll, that's 10–20 chips.
Place your even-money bet
Bet your unit on Red, Black, Odd, Even, 1–18, or 19–36. The choice doesn't matter mathematically — pick one and stay consistent within a session.
Win → reset to unit
If you win, pocket the profit and return to your base unit for the next spin. The sequence is complete.
Lose → double the bet
If you lose, your next bet is exactly 2× the last wager. Continue doubling until you win.
Repeat
Every win resets you to step 2. You're always hunting exactly one unit of profit per sequence.
The Bets
Standard Bet Placement
Highlighted zones = covered by this strategy
Example Sequence
Example Sequence (unit = 10 chips)
Unit size: 10 chips
The Math
The Math
After N consecutive losses (base bet = B): Next bet required = B × 2ᴺ Total lost so far = B × (2ᴺ − 1) Win at next spin = B × 2ᴺ Net profit = B × 2ᴺ − B × (2ᴺ − 1) = B ✓ The house edge (2.7% on European) is NOT eliminated. It is deferred — you trade many small losses for rare large ones.
Bankroll Guide
Recommended Bankroll
1000 chips
Unit Size
10 chips
Stop-Loss
400 chips
Take-Profit
200 chips
A 7-loss streak requires a bet of 1,280 chips. A 1,000-chip bankroll only survives 6 consecutive losses before hitting the floor. Bigger bankroll = more sequences survived, not a better edge.
When to Walk Away
Stop when you've lost 40% of your starting chips in a session (stop-loss).
Stop when you're up 20% of your starting chips (take-profit).
Stop when the next required bet would exceed 10% of your remaining bankroll.
Stop when you've reached the table maximum bet — the sequence can no longer continue.
The Martingale does not beat the house. It creates the illusion of consistent small wins while building up to an inevitable large loss. Use it to understand variance, not to expect long-term profit.
Ready to test it?
Try in Simulator· bets pre-loaded