You’ll need the physical 14-piece set
Print my free model, then use this page for interactive challenges, progressive hints and printable guides.
Get the piece set on MakerWorld
How many ways can 14 pieces make a square?
3D print the 14 pieces. Solve all 536 by hand. Follow a printed guide, or beat the clock on screen.
Like a tangram, but ~2,200 years older — attributed to Archimedes, and every arrangement here comes from an exhaustive computer search.
Print my free model, then use this page for interactive challenges, progressive hints and printable guides.
Get the piece set on MakerWorld
🎨 And forget the square! The same 14 pieces make animals, people, ships — whatever you can imagine.
You'll still place your real 3D-printed pieces — this just shows the hint on your screen instead of on a printed sheet.
Choose a difficulty to start a random challenge
Reveal more pieces anytime, or peek at the full solution.
12cm square, all 14 pieces — place the real pieces right on top.
Print once and measure the square with a ruler — if it's not exactly 50×50mm, your printer rescaled the page.
Click a square to select/deselect it (outlines only, no labels).