A simple seeming four piece puzzle designed by Stewart Coffin. All you need to do is fit all four pieces in the rectangular space. You always feel like you're about to solve this one!
The puzzle pieces are each made from 1/4" hardwoods and the base is 2 layers of floorboard and measures about 5 1/2" x 3 1/3" x 3/5". Very durable and looks great on a coffee table or desk!