| 摘要 |
There is disclosed a logical toy in which a series of rigid hooks are fixed by legs about the perimeter of a disc. The legs are connected to the disc so that the annular closed part of each hook except the first in the series encloses the legs of the preceding adjacent hook to form a trap with said hook. A closed cord is arranged around the legs of one of the hooks. The object of the toy is to move the cord through the series of hooks.
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