| 摘要 |
1. The dexterity puzzle has a mobile element, fixed to a string. Unique characteristics: It consists of a plate (1) with at least one opening (2) and/or indentation (3). An element in the form of a disk (5) is attached with a piece of string (4) to the plate. The diameter of the opening (2) is larger than the diameter of the disk (5). |
