Puzzle disc
 A puzzle disc including a body portion, a cover having two open slots extending inwardly from its circumference and fitted in a central portion of the body portion thereby forming a track having a neck portion between the cover and the body portion, a circular member rotatably arranged in the body portion, and a plurality of movable elements fitted in the track, whereby the degree of difficulty in playing the puzzle disc can be adjusted to fit for players with different intelligence. 
A
A63F
inventional
Chiu-Huang
Chang