4M Puzzle


4M Puzzle

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A marvelous packing puzzle for everyone from beginners to experts.
See Details


Origin Thailand
Dimensions 4 x 4 Inches
Material Wood
Difficulty Master

Solve this marvelous masterpiece and you'll enjoy a magnificent aha moment that might just make you say, "Mmmm." The 4M puzzle includes four M-shaped pieces, a box, and a lid. Your first challenge is to fit three of the pieces into the box with the lid placed flat on top. You'll notice there is a protrusion on the underside of the lid that makes this task a bit more challenging. But to really appreciate the brilliant elegance of this packing puzzle, you'll need to figure out the trick to fitting all four M pieces into the box with the lid flat on top.

A wonderful puzzle for both novices and experts, 15-20 minutes of experimentation will be rewarded with a genuinely satisfying epiphany, the likes of which are very rare in the world of puzzles and nearly nonexistent in the messy realm of real-world problem-solving...

Designed by award-winning puzzle creator Iwahiro, a Japanese mathematician and writer and one of our favorite living puzzle inventors.

Shipping & Returns

Our products ship through a privately owned climate-controlled warehouse in San Diego, California.

We offer a variety of shipping methods from budget-friendly to price-doesn’t-matter. You can compare estimated costs and transit times once you begin the checkout process and enter your shipping address. Carrier options may vary based on your destination.

We strive to pack and ship all items within 24 hours of each order (Monday through Friday). However, we are a small team so during peak holiday season we kindly ask that you allow 3-5 days for your items to be sent on their way. Every box shipped from Art of Play is expertly packed by actual human beings (you can see their names written on your package slip). Everyone in our warehouse is paid a fair wage and treated with respect.

Return Policy

We will gladly offer a refund or store credit in exchange for any items returned within 30 days of the original order, as long as the items are still sealed in new condition. We cannot accept returns of opened or used items. Return shipping is the responsibility of the customer.


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