two people were separated by four squares of sidewalk pavement. With a pinky, you had to bounce the ball in the boxes, without hitting the lines and without your opponent catching the ball before it bounced in the box closest to him. You had to bounce the ball in a progression, starting with the box closest to the opponent, then the two boxes closest, then three boxes, then all four boxes, with one bounce in each box only. It’s hard to explain, easier with a diagram.