This puzzle will provide the ultimate challenge for any puzzle enthusiast. Ever heard the puzzle fan in your life complain that the puzzle is too easy and not challenging enough? Well this puzzle will be the answer to that problem! Although only 529 pieces it provides a very stern test for any puzzles as the puzzle is double sided with an identical image on both sides off-set by 90 degrees. As if that wasn't bad enough the production process ensures that the cutters are reversed so there is no was to tell which pieces go which way round by looking at the cutter marks. The image features hundreds of adorable dalmatian dogs and is guarenteed to have any puzzles seeing spote before their eyes!