Rubik 6x6x6

a.k.a. V-Cube 6x6x6
Patented by P. Verdes 2007, made by V-Cube 2008.
(plastic, 2.75 inches;
opposite black is yellow, opposite red is orange, opposite blue is green)

Uses slightly rectangular cubes on the edges and larger square cubes at the corners; works with a click-stop action. The Wikipedia Page outlines a number of solution strategies, and Jaap's Page presents a four phase solution in the same theme as for the larger Rubik 7x7x7 cube. The Verdes patent describes designs as large as 11x11x11. Below are photos of the this puzzle partially disassembled and the pieces that are used; note that some of these pieces are used for filling space that is not seen from the outside.

Further Reading
Jaap's Page,, from:
Wikipedia Page,, from:
Verdes Patent Application, from: - patent application 2007/0057455
Verdes Patent, from: - patent no. 7,600,756