| 摘要 |
The puzzle has a spherical base (2) formed of two hemispherical half-shells (21,22) which clip together and can pivot around an axle with respect to each other. Panels (3) have hooks (30) on their inner surfaces which clip into holes (20) distributed around the shells. The panels define grooves along which pieces (4), marked with different signs, slide. Each piece has a lower wall which fits the base and an upper wall which fits over two adjacent panels. The shells are turned to change the grooves and modify the combination of pieces.
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