Passing drill in a square with three players

In this drill, players alternate between passing straight or diagonally. After a straight pass, the player moves to the empty side.

1. The drill starts with the red player passing straight across the square to the blue player. The passer always moves to the empty side after a straight pass.
2. The blue player passes the ball diagonally to the black player and stays on the same side.
3. The black player plays a straight pass to the red player who has moved to the opposite side. After the straight pass, the black player moves to the empty side.