Suppose you pot a red and then the blue, your current break - which is your running total for that visit to the table - would be 6 points, as you got 1 point for the red and 5 points for the blue.

Our guide explains the basics of snooker, including the table set-up, how you win, how much each ball is worth, the differences from pool and what constitutes a foul.

Snooker star Mark Allen begins his World Championship campaign on Tuesday against Robbie Williams but may need a helping hand from the referee in order to combat his partial colour blindness.