“Also in the upcoming release from Pelikan is another of those wonderfully simple-looking packing puzzles based on a 3x3x2 box cavity with an interesting entry shape. The Crystal Ring has been beautifully made. Pack the 3 pieces inside… easy peasy! Nope! It requires a 2.5.7 sequence to pack it correctly and involves a very nice little dance of the pieces around each other. The assembly is made tougher by the shape of the pentomino piece really restricting the placement of the other two pieces and is not helped by the fact that the other two are identical. When I tried my assemblies outside of the box it always felt like the tetrominoes should be mirror images to fit around the other piece. The final arrangement of the pieces is quite counterintuitive – the eventual assembly is very satisfying! Osanori-san and Pelikan definitely got it right this time – wonderful!”