A ball goes out of bounds as soon as any part of it lies directly over a boundary. When a ball goes out it is placed one yard in from where it crossed the boundary. A ball less than one yard from the boundary is also moved in, unless it is the striker's ball and is entitled to play an extra stroke.
Hitting Other Balls
If the striker's ball hits a live ball we say it has made a roquet, and the striker becomes entitled to play a croquet stroke. (All balls are live at the start of every turn.) The croquet stroke is played by picking up the striker's ball, placing it in contacted with the roqueted ball, then striking the striker's ball in such a way as to make both balls move. The croqueted ball is now dead, and remains so until the striker's ball scores its next hoop point or until the start of the next turn.
If the striker's ball hits a dead ball, it is not a roquet and no extra stroke is earned. However, if the striker is otherwise entitled to play an extra stroke, the turn continues.
The striker earns an extra stroke (called a continuation stroke) by scoring a hoop for the striker's ball or by playing a croquet stroke, so long as no ball went out of bounds during the croquet stroke. The continuation stroke is played as the balls lie.
If the striker's ball scores two hoops on one stroke, or scores a hoop during a croquet stroke, only one continuation stroke is earned.
No continuation stroke is earned if the striker's ball scores a hoop point and then makes a roquet on the same stroke, or makes a roquet during a croquet stroke, the roquet requiring that the striker immediately play a croquet stroke.
Rover Balls and Scoring the Peg
A ball that has scored all twelve hoop points is called a rover ball. If the striker's ball is a rover ball and any rover ball hits the peg, that ball has scored the peg point and is removed from the game. Turns still alternate between sides. The game ends when both balls of a side have scored the peg.
Peg and hit
The striker's ball cannot both score the peg and make a roquet on the same stroke. Whichever happens first takes precedence.