Twisty puzzle superstar Oskar van Deventer has done it again with the 3D printed Cheese Block puzzle. A deceptively simple concept that quickly starts to look harder and harder to solve.  Oskar has been designing 3D printed twisty puzzles since 1978 including the Over the Top Cube which is now in the Guinness Book of records as the highest order Rubik's cube.  Order 3D-printed do-it-yourself puzzle kits from Shapeways or contact Oskar directly if you want to buy a fully dyed, assembled and stickered puzzle.