Abstract: A puzzle characterized by a number of stackable components each provided with an activated area consisting of a plurality of polarized zones. Each zone is polarized along one of two mutually perpendicular axes. The stackable components appear to be identical when separated, but when stacked together the appearance of the resultant solid will be dependent upon the alignment of the polarized zones of adjacent component. The object of the puzzle is to make the resultant solid totally transparent, totally opaque, or some other predetermined pattern of transparency and opacity.