Square Sei Shōnagon puzzle

The square the seven Sei Shōnagon pieces are cut from. It is the same square as the tangram's, divided differently, with two trapezia where the tangram has its large triangles. It is rated hard because four straight sides show nothing of the pieces. About two thirds of their edges are hidden inside the figure, more than in any other Sei Shōnagon shape here.

Drag the seven Sei Shōnagon pieces onto the shadow until the square is filled. Every shape here uses all seven, 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 Sei Shōnagon puzzles 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.