Black Box

Black Box is a logic game in which you have to determine the location of all balls inside an opaque black box. The black box is a square box, inside which there are cells.

Some of these cells may contain balls, but you can't see them. You can launch rays from the sides of the black box and watch where they come out. The rays interact with the balls inside the black box according to certain laws.

Your task is to determine the location of all balls inside the black box based on the results of the rays.