The present invention relates to a puzzle and a method of assembling a puzzle from a plurality of planar puzzle pieces. More particularly, the invention relates to a puzzle having pieces which, when stacked upon each other on completion of the puzzle, define in relief a recognisable image (e.g. of a building or a character). The puzzle comprises a plurality of inter-engaging pieces, wherein: each puzzle piece has on a planar surface thereof a part of an image which is shown as a whole once the puzzle pieces are assembled together in a completed planar jigsaw puzzle; each puzzle piece has a first edge of a first shaped profile; and when the puzzle pieces are removed from the completed planar jigsaw puzzle in a pre-determined sequence related to positioning of the puzzle pieces in the completed planar jigsaw puzzle and stacked in the predetermined sequence then the first edges of the stacked puzzle pieces together define in relief a recognisable image on a first side of the stack.