| 摘要 |
The game piece (1) has an outer shape that is a spheroid constituted by a spherical volume (2) cut by a polyhedral. Each face of the polyhedral has flat facets (3) that are separated by smooth zones that are the surface of the sphere (4). The polyhedral is regular and its centre is the same as the centre of the sphere. The number of facets is a multiple of two or three and is at least equal to six. The facets are opposite each other in pairs and are parallel.
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