Roulette Column Strategy
Roulette columns strategy bets on one of three vertical columns of 12 numbers. Pays 2:1, hit rate 32.43%. Mathematically identical to dozens.
How the column bet works
The roulette layout has three columns of 12 numbers each. Pays 2:1. Hit probability: European 32.43%, American 31.58%.
1st column: 1, 4, 7, …, 34. 2nd column: 2, 5, 8, …, 35. 3rd column: 3, 6, 9, …, 36.
Why columns and dozens are the same math
Both cover 12 numbers and pay 2:1. The numbers are different but the math is identical. Any system that works on dozens works on columns and vice versa.
Players sometimes prefer columns because the 12 numbers are visually adjacent rather than sequential.
Combined column + dozen strategies
Stacking $10 on 1st column and $10 on 1st dozen covers 18 unique numbers (1, 4, 7, 10 are in both; 2, 3, 5, 6, 8, 9, 11, 12 are dozen-only; 13, 16, 19, 22, 25, 28, 31, 34 are column-only). Hit rate ~48.65%.
Net per overlap hit: +3 units (both bets win). Net per single-bet hit: +1 unit. Net per loss: −2 units. Expected loss: still 2.70% of total $20 stake.
Test results
Flat $10 on 2nd column for 200 spins on European: expected net ~−$54, max drawdown typically $80-$150, bust rate near zero.