Square Stomachion puzzle

Archimedes' Stomachion: a square cut into fourteen, ten of them triangles, put back together the way the earliest surviving drawing of it shows. It is rated impossible because a square shows nothing of the pieces inside it, and the fourteen meet along lines at awkward slopes that no grid lines up with. Nearly four fifths of the pieces' edges are hidden.

Drag the fourteen Stomachion pieces onto the shadow until the square is filled. Every shape here uses all fourteen, with no overlaps and nothing hanging over the edge. The pieces have exactly the silhouette's area, so covering the shadow is the whole win condition.

Browse the rest of the Impossible tangram variations or all puzzles, take a figure apart piece by piece in how to play, or try the daily tangram, which deals one of these shapes a day to everybody at once.