The Egg Tangram wooden puzzle challenges the puzzler to produce a given bird shapes silhouette using all of the pieces. It can be tantalizingly difficult, but also satisfying when the pieces fall into place and even thrilling when you invent a new form. The puzzle has 9 wooden pieces and wooden frame. You can create at least 54 different 2D bird shapes using the provided pieces. The basic one is the Egg shape (where all birds come from), and 54 additional options provided with the puzzle. Difficulty Level [1-5]: 4 (Hard) Approximate Dimensions: 4.75 x 4.75 x 1 Excellent Quality.