OSTOMACHION

536 solutions! 14 real pieces Free PDF ✂️ Works offline ⚡

Pick your favorites. Print them. Solve away.

Like a tangram, but ~2,200 years older — invented by Archimedes, mathematically proven to have exactly 536 solutions.

🎨 Feel creative: these 14 pieces can also become animals, people, anything — don't just stick to squares!

Full size — place the real pieces right on top.

Advanced print settings

Print once and measure the square with a ruler — if it's not exactly 50×50mm, your printer rescaled the page.

Browse the solutions

Click a square to select/deselect it (outlines only, no labels).

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