Two quick-reference pages. Rules and odds first, popular strategies second. English edition.

Page 1 · Rules & odds: PDF · PNG

Page 2 · Popular strategies: PDF · PNG

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Roulette Cheat Sheet

Fixed-odds reference
for a fair wheel

EuropeanSingle zero · 37 pockets2,70% edge

American0 and 00 · 38 pockets5,26% edge

FrenchLa Partage, when offered1,35% on even money

Single-zero layout

table order, not wheel order

Example chip positions: 1 straight · 2 split · 3 street · 4 corner · 5 six line

Outside: red/black, odd/even and 1–18/19–36 each cover 18 numbers. Zero is neither red nor black, odd nor even, low nor high.

Payouts & chances

win probability per spin

Bet	Cover	Pays	EU (37)	US (38)
Straight	1	35:1	2,70%	2,63%
Split	2	17:1	5,41%	5,26%
Street / trio	3	11:1	8,11%	7,89%
Corner	4	8:1	10,81%	10,53%
First four (0, 1, 2, 3)	4	8:1	10,81%	—
Six line	6	5:1	16,22%	15,79%
Dozen	12	2:1	32,43%	31,58%
Column	12	2:1	32,43%	31,58%
Red / black	18	1:1	48,65%	47,37%
Odd / even	18	1:1	48,65%	47,37%
Low / high (1–18 / 19–36)	18	1:1	48,65%	47,37%
US first five (0, 00, 1, 2, 3)	5	6:1	—	13,16%

US top line: 0, 00, 1, 2, 3 covers 5 pockets and pays 6:1; its edge is 7,89%. The single-zero first four (0, 1, 2, 3) pays 8:1.

Read the payout correctly

Payout ratios show profit only. The winning stake is also returned: a $1 straight win returns $36 in total. With combined bets, subtract every stake first; several wins can settle on one spin.

Zero & French rules

Standard outside bets lose on 0 or 00. La Partage returns half only on eligible even-money bets. En Prison rules vary by table; read the layout rules before betting.

French call bets

Voisins 17 pockets / 9 chips
Tiers 12 pockets / 6 chips
Orphelins 8 pockets / 5 chips
Jeu zéro 7 pockets / 4 chips

A call combines bets across a wheel sector. Net returns vary by winning pocket; there is no special edge.

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Popular Roulette Strategies

Quick reference
for even-money bets

Eight familiar systems, not a measured ranking. 1u is your base stake. Use red/black, odd/even or 1–18/19–36.

All strategies leave the house edge unchanged: standard single-zero 2,70%, double-zero 5,26%.

Legend W winL loss0 and 00 are full losses; no La Partage.

Flat Betting

Start: Always 1u.
Win: Stay at 1u.
Loss: Stay at 1u.
Reset: Use a session stop chosen in advance.
Risk: No automatic loss recovery.

Example LWL · stakes [1, 1, 1]u · net −1u

Martingale

Start: Start at 1u.
Win: Reset to 1u.
Loss: Double the stake.
Reset: After every win.
Risk: Table and bankroll limits can break recovery.

Example LLW · stakes [1, 2, 4]u · net +1u

Paroli / Reverse Martingale

Start: Start at 1u.
Win: Double through 1u, 2u, 4u.
Loss: Reset to 1u.
Reset: After any loss or the third win.
Risk: Any earlier loss leaves the cycle −1u.

Example WWW · stakes [1, 2, 4]u · net +7u

D’Alembert

Start: Start at 1u.
Win: Subtract 1u; floor at 1u.
Loss: Add 1u.
Reset: None.
Risk: Losing runs steadily increase the stake.

Example LLWW · stakes [1, 2, 3, 2]u · net +2u

Fibonacci

Start: Use 1u, 1u, 2u, 3u, 5u, 8u…
Win: Back two terms, no earlier than the first 1u.
Loss: Advance one term.
Reset: The first term is the minimum.
Risk: A win need not recover losses.

Example LLLW · stakes [1, 1, 2, 3]u · net −1u · next 1u

Labouchère

Start: Line [1, 2, 3]; bet its ends’ sum (sole entry if one).
Win: Remove both ends.
Loss: Append the stake.
Reset: When the line is empty.
Risk: Losses lengthen the line; stakes are uncapped.

Example LWW · stakes [4, 5, 5]u · net +6u

1-3-2-6

Start: Start at 1u.
Win: Advance to 3u, 2u, then 6u.
Loss: Reset to 1u.
Reset: After four wins.
Risk: Late loss can erase gains; target not guaranteed.

Example WWWW · stakes [1, 3, 2, 6]u · net +12u

Late loss WWWL · net 0u

Oscar’s Grind

Start: Cycle target +1u; start at 1u.
Win: Raise 1u if short; cap at amount still needed.
Loss: Repeat the current stake.
Reset: At +1u.
Risk: Cycles can last long and exhaust a bankroll.

Example LLLWWW · stakes [1, 1, 1, 1, 2, 1]u · net +1u