As a brainteaser the user could try creating a finite element mesh for the following shape:-

Imagine one eighth of a sphere of radius 50 which is centred at a corner of a cube of side 100. Mesh the region between the spherical surface and the cube surfaces furthest away from the centre of the sphere, using six surfaced bodies but without using any combined lines.

Hint: Three bodies will be required and GEOMETRY SPLIT is useful here.