The players, equally divided, take positions on opposite sides of a
building such as a barn, so that they can not be seen by their
opponents. A player on one side then throws the ball over the roof and
one of his opponents attempts to catch it and to rush around the
corner of the building and throw it at one of the opposing side. If he
succeeds, the one hit is a prisoner of war and must go over to the
other side. The game continues until all of one side are captured.