Hitting and entering
A single checker on a point is a blot. If an opposing checker lands on it, it is hit and goes to the bar.
A checker on the bar must come back in before anything else moves. It enters in your opponent's home board, your points 19 to 24: a 1 enters on your 24 point, a 6 on your 19 point. It can enter only on a point that is not blocked.
If no die can enter, you lose your whole turn. The more points your opponent holds in their home board, the harder it is to come in.