A Dissection game similar to Tangrams described in fragmentary manuscripts attributed to Archimedes and was referred to as the Loculus of Archimedes (Archimedes' box) in Latin texts. The word Stomachion has as its root the Greek word for stomach. The game consisted of 14 flat pieces of various shapes arranged in the shape of a square. Like Tangrams, the object is to rearrange the pieces to form interesting shapes.
See also Dissection, Tangram
References
Rorres, C. ``Stomachion Introduction.''
http://www.mcs.drexel.edu/~crorres/Archimedes/Stomachion/intro.html.
Rorres, C. ``Stomachion Construction.''
http://www.mcs.drexel.edu/~crorres/Archimedes/Stomachion/construction.html.