10 Penny Puzzle

The 10 Penny Puzzle is a fun and approachable design. The concept is simple, fit all ten US pennies into the square opening.

It was designed based on the branch of recreational maths called 'circle packing' where the aim is to fit 'n' unit circles into the smallest square possible. This version is not actually particularly difficult and a bit of persistence should see most finding the solution.

10 Penny Puzzle comes in an unsolved state with a free space for the final coin.

The solution is included.

We aim to ship all orders within 24 hours (Mon-Fri) and you can choose from a range of options during checkout.

Delivery within the UK should take 24-48 hours from dispatch (excluding weekends).

International orders may be subject to import charges. For more information and international shipping details please see here.

Returns

If for any reason you change your mind you can return your items for a full refund within 30 days as long as they are in the same condition they were received.