| A puzzle based on space filling fractal curves |
| | The Dragon Curve was first investigated by NASA physicists John Heighway, Bruce Banks, and William Harter |
| | Named after Bill Gosper, and also known as the flowsnake curve... |
|
| The Peano Curve, Dragon Curve and Gosper Curve Fractal Puzzles. |
| | This Tippe Top has an unexpected extra trick... |
| | A symmetry puzzle, made from sturdy metal blocks... |
|
| For dedicated fidgeters only! What a joy only three pieces can bring to idle hands... |
| | Rearrange the custom metal "twigs” until they form a symmetrical shape. |
| | Two metal pieces, limitless possibilities of arranging them, but only one solution! |
|
| The Pendulum kit is designed to serve as a learning tool rather than a puzzle... |
| | Abstract-2 - a new design of the GeoBender magnetic puzzle... |
| | Bees - a new design of the GeoBender magnetic puzzle... |
|
| The GeoBender is a new design of magnetic puzzle... |
| | GeoBender is an elegant and sophisticated 3D magnetic puzzle... |
| | An elegant, transforming geometric puzzle, based on the Yoshimoto Cube. |
|
| A Ring Dial was a cutting edge scientific instrument in its time, which is about 500 years ago! |
| | If you spin it fast enough, it will turn completely upside down, spinning on its stem. |
| | These so-called 'Non Transitive Dice' (Magic Dice) demonstrate a probability that violates common sense and traps the unwary. |
|
| Another variation on Non Transitive Dice, this time based on a set of three dice. |
| | An unusual pair of dice. Martin Gardner reported on the discovery of these dice by a certain Colonel George Sicherman.. |
| | Whichever way you roll them, their width is always the same, although they are not spheres! |
|
| A beautiful physical version of Dudeney's Dissection, where the 4 pieces are hinged, so that you can transform one shape into the other. |
| | 'Napier's Bones' is an early calculating device that allowed the user to carry out multiplication and division. |
| |
