The Concept of Biased Wheels

A biased wheel is one where certain numbers come up more frequently than they statistically should. This can happen due to manufacturing imperfections, wear and tear, or even temporary factors like dust or sticky substances in the pockets. For example, if the number 5 appears once every 29 spins instead of the expected 1-in-38, a player betting $10 on 5 each time would lose $280 over 28 spins but best casino bonuses UK win $350 on the 29th spin, netting a profit of $70 every 29 spins.

Why Casinos Overlook Biased Wheels

Roulette wheels are expensive and not frequently replaced, unlike cards and dice. As long as the table is profitable overall, casinos may overlook a single player exploiting a biased wheel. This was the case with John, who managed to profit significantly before the casino eventually replaced the wheel.

The Process of Charting a Roulette Wheel

John’s success was not just about identifying a biased wheel but also about the painstaking process of charting. He and his friends spent weeks recording every spin on both roulette wheels in the casino. This tedious task is crucial for identifying biases but often yields no results.