| 摘要 |
A tri-dimensional puzzle has an elongated cylindrical body with grooves in its outer surface forming a labyrinth defining one or more passageways from one end to the other end of the cylinder. A hollow piece or ring with a circular orifice having a diameter slightly greater than the diameter of the cylinder has a peg or protrusion on the inner surface of the orifice, the peg or protrusion being sized to fit into the grooves of the cylinder. The hollow piece or ring is moved from one end to the other end of the cylinder by rotating and sliding the ring on the cylinder to advance the peg into the cylinder's grooves along the passageway defined therein. |
