Three-dimensional puzzle with seven axes of rotation

A spherical sliding element puzzle comprising:

• a spherical central core which is an embodiment of the prior art U.S. Pat. No. 5,358,247 (U. Meffert and A. L. Chau) adjusted with three mutually orthogonal circular crossing tracks receiving legs and feet of some slidable outer segments;
• a plurality of thirty-two outer segments which forms a spherical shell completely enclosing the said spherical central core, the shapes of the said outer segments being determined by seven planar sections through the centre of the spherical core, such that
• three of the said planar sections are perpendicular to each other and cut the said outer shell into eight octants;
• the other four said planar sections are along the midpoints of the arcuate edges of the said octants, thus splitting every said octant into three arcuate right isosceles segments and one arcuate equilateral triangular segment;
• and the said outer segments being attached either to the central spherical core or to the neighbouring segments in a manner that enables rotations of hemispherical groups of segments relative to each other along the said sectioning planes.