A seriously difficult double sided puzzle of Cats! It actually only has 529 pieces but it will feel like 4,000! Each side of The World’s Most Difficult puzzle features exactly the same artwork offset by 90 degrees and cut from both sides and so it’s impossible to tell which side is which! The image is of lots cats of all different colours and breeds. The Finished puzzle measures 384mm x 384mm. Contents: 529 piece puzzle Warnings: Not suitable for children under 36 months, small parts, choking hazard.