THE HARD NUT a set of box puzzles
| This puzzle set consists of several polyhedrons in
graduated sizes one fitting inside each other. |
| Each polyhedron is made up of several identical, interlocking parts. |
| The puzzle demonstrates the symmetry features of different polyhedrons and their spatial interaction. |
| The most interesting part about this set of puzzles is that they can fit inside one another. |
| Polyhedrons presented are: cubic octahedron, in it rhombic cube, in it rhombic dodecahedron, in it cube, in it star-like octahedron, in it icosahedron (presented as a sphere). |
| There exist other sets of input polyhedrons.The puzzle helps to develop spatial imagination, volume vision, allows the player to learn basic laws of symmetry, brightly illustrates the interrelation of polyhedrons. |
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