Nice contrasts via color. I like the sharp lines and angles in the image. Lighting is good, as is focus though I wish the black chess piece was a little sharper. Fits the challenge generally but I don't get a feeling of solitude or loneliness. A good solid image. 5
An interesting composition and good use of reflections. Critiques: The background is grainy and the black king is facing the wrong way. I see why you did it, but it just looks strange that the chess piece has his back to the opponent.
The white pieces being a little and then a lot out of focus is distracting... a narrower DOF would have been nice here (I know, depends on the camera...). The relections are also distracting... they should either be highlighted as a part of the pic, or reduced in some way.