Implement boxorz puzzle

See http://www.coolmath-games.com/0-bloxorz
I did it for a scala project here https://class.coursera.org/progfun-005/assignment/view?assignment_id=19

The game state could be shown in 2D, but when animating block movement, shading could be used to give a 3D effect.

It will use the same search A\* or other search algorithms as everything else.
