Beautiful to look at and very difficult to solve if you have never seen how the pieces go into the frame, this Wine Lover's picture frame puzzle is cut from 1/4" maple and fit into a 7" x 7" frame. The are also reversible, compounding the degree of difficulty as most of them will only go in with one orientation. 

Dimensions: 7" x 7" x .5"
Difficulty level: 4 (out of 6)