The game is played with the cue-ball and the six colours from the snooker set.
To begin the game the six colours are placed on their normal spots, except for the blue and the black, which are reversed.
The brown and pink are the "scrub" balls and must be avoided at all times. If the cue-ball contacts either ball, at any time in the stroke, it is a foul.
The opening stroke requires the first player in the game to play for and strike the blue ball first. If he fails it is a foul stroke, the game is not considered to have begun, and the stroke must be replayed.
No player may score by potting until he has first scored a cannon. To pot a ball before making a cannon, even by a fluke, is a foul.
The four scoring balls may only be potted in certain pockets.
The Blue in the two top pockets.
The Black in the two centre pockets.
The Green in the left-hand baulk pocket,
and the Yellow in the right-hand baulk pocket.
Potting any ball in a "wrong" pocket is a foul.
Points are scored in the following manner:-
2 points - For any cannon
2 points - For potting the yellow
3 points - For potting the green
7 points - For potting the black
9 points - For potting the blue
The winner is the first player to score exactly 31 or 61 points,
as decided before the game begins.
If the agreed score is 31:-
scoring exactly 30, or more than 31, is a foul.
If the agreed score is 61:-
scoring exactly 60, or more than 61, is a foul.
For any foul stroke the offending player loses their entire score.
After making a foul, the player must again begin scoring with a cannon, as in Rule 5.
All the usual fouls that are common to snooker apply to Scrub.