Gallery - 'Chess - The Next Generation'
The above pictures are all about 3D Chess and the the photos are mostly in 3D, but here are some other pictures in Gallery 2 that are both in regular 2D and 3D.
As long as you know how to play a regular game of chess, it is not much of a stretch for the mind to grasp a 3D game of chess. -- In-fact, by learning something new, you will improve your mind. Much research has proved this to be true.