The goal is that they realize what they have to do when the ball is passed.
How should we run as a forward.
Ball starts at A
The 3 defenders position themselves so that the AS is closed and the ball can only be passed to the sides or back out.
A passes the ball to B because the AS is closed.
Now comes what the whole exercise is about what the 3 defenders should do now
V1 shifts so that she is in front of the ball so that the ball cannot be passed straight forwards
V2 stands between the person with the ball and the ball line
V3 who shoots at attacker C who is giving support there V3 makes sure that C cannot get the ball and defends on the inside, between the opponent and the goal.
From here on it is a 3:3
At the other end, it is exactly the same and the defenders do the same