Law 36 of the MCC's laws of cricket still has peoples' heads in a spin - exactly how does the lbw law work?
To the uninitiated, the leg before wicket dismissal is to cricket what the offside law is to football.
But the lbw law is not as complicated as some people may think.
It is governed by certain principles which, once mastered, make the law simple to understand.
And that is exactly what this guide will aim to do!
BBC SPORT | Cricket | Laws and Equipment