Very nice clean image. No curves/lines at all in the background, exellent job there. I imagine this was a pretty tricky subject in regards to lighting. A few blown areas, but nothing that is overly distracting or takes anything away from the image.
If X does not block what does O do, he has no other piece? I don't like some of thereflections coming off the bottom X and O. I do like the comp and the idea. 7