This is a faithful reproduction of the classic 70's game: Black Box. The goal is to identify the atoms hidden in the cells of a square using minimum number of probes (rays). An atom in a cell exerts three kinds of forces on the cell surrounding it. The atom exerts: (1) DEFLECTING force on the NE, NW, SE, SW squares; (2) ATTRACTING force on the N, E, W, S squares, and (3) ABSORBING FORCE in the cell in which it is placed. The absorbing force is stronger than the attracting force.