For the first time, I didn't spend too much time on this picture (certainly because there are not elaborated textures. The face has no texture on it)
I've put all my efforts on the scupting in ZB and on the rendering (5 pass I think).
Really few post production work only color corrections.

I'm pretty happy with the result because the mood is the same that I wanted to get at the beginning.

I hope you'll like this strange chess player