| 摘要 |
<p>The game of skill consists of a cube divided by cutting planes that are parallel to its faces. These delimit a group of elements that can move in the cutting plane with regard to the neighbouring elements. Each pair of faces belonging to two parallel groups (E1-E'1,E2-E'2, etc.) have couplings (G,B) to connect the groups while allowing them to slide relative to each other. The couplings have a circular groove (G), hollowed out of one face of the pair, and projections (B), that are portions of a circle, on the other face.</p> |
