Spatial logical toy

In a spatial logical toy having the form of a regular geometric solid and wherein halves thereof are relatively rotatable about midpoints of three orthogonal axes, the improvement wherein the toy is assembled from eight toy elements comprising seven identical toy elements each having exterior surfaces for forming the regular geometric solid shape and interior orthogonal plenar surfaces the corners of which are directed to the geometrical center of the solid when assembled, the interior surfaces each being recessed at the corner and confined by a spherical groove and an eighth toy element having exterior surfaces completing the solid shape with the seven toy elements and having interior orthogonal planar surfaces forming a corner at the geometric center of the toy, the interior surfaces of the eighth toy element having a spherical cam cooperative with the spherical grooves of the seven toy elements and means forming two interior threaded bores directed to the geometric center of the toy, and toy element connecting means comprising two connecting elements each having a substantially T-shaped cross section, the head portions of which are configured to be received in the spherical grooves with the body portions disposed between the recessed portions of the interior surfaces of the seven toy elements and including a throughbore, two screw elements inserted in the throughbores and threadably engaged with the two interior threaded bores and two spring elements bringing the connecting elements towards the geometric center of the toy.