This game is a test of the player's intelligence, this is an intellectual game, not difficult to play at first, is a beam of light using square squares to change the direction of light refraction, so that light can enter the designated place even if the clearance, but It will become more and more complicated later on, so it will not be easy to play with difficulty. We need to try it step by step to see what effect the box will have on it. Clearance is not a problem.
