Square tangram puzzle

The square is the shape the seven tans are cut from, and putting them back together is the oldest tangram puzzle there is. It is also one of only thirteen convex shapes the seven pieces can make. It is rated hard because the outline is four straight sides and nothing more. About two thirds of the pieces' edges are hidden inside it, more than in any other tangram figure here, so no piece shows where it belongs.

Drag the seven tangram 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 Tangram 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.