Designed for a high level of difficulty due to several unique features… 1. There are no flat edges, you cannot start by building a border. 2. Extra pieces, includes five extra pieces that do not fit anywhere. 3. Repeating patterns, the repetitive imagery of butterflies, and flowers. 4. Hidden image, there are red lipped hidden within the floral scene. You can find it when fully assembled. New in the box never opened. Perfect for anyone loving puzzles.