Abstract: A stacking puzzle including a plurality of stackable, game pieces and one or more solid game rods. Each of the game pieces includes an aperture extending obliquely therethrough. When the game pieces are properly stacked and oriented relative to one another, the oblique apertures line up and allow the game rods to be inserted through all the game pieces. However, the game pieces must be stacked in the proper order and must be placed in the proper orientation relative to one another in order for the apertures to align properly. Although there are a multitude of incorrect ways to arrange the game pieces, only one correct arrangement causes the apertures to align and thereby permit the game rod to be inserted through the game pieces. In one embodiment, the faces of the game pieces are made nonparallel to provide an additional degree of freedom and thereby further increase the challenge of the puzzle.