Archimedes Square Stomachion puzzle

Perhaps the world's oldest puzzle, this mathematical challenge was developed over 2200 years ago by Greek mathematician Archimedes. Our Archimedes Square Stomachion puzzle is 4 inches square (nearly 5 inches square in wood tray) and consists of 14 polygons of varying sizes and shapes, made from brightly colored wood. Much like a traditional Tangram, you can solve the puzzle or create your own designs and patterns.

In November 2003, Bill Cutler calculated 536 possible distinct arrangements of the pieces into a square using a computer program, where solutions that are equivalent by rotation and reflection are considered identical (Pegg, E. Jr. "Math Games: The Loculus of Archimedes, Solved." Nov. 17, 2003. http://www.maa.org/editorial/mathgames/mathgames_11_17_03.html).