The problem I have with this is that there isn't a direct association with the title and the image--there are lots of pawns here. Not just one. But that said I think I'm one of the few here who votes according to titles.
Other than that good image. Good sentinel display.
I think you should always export to the max allowable size. In my opinion it will always make the image look and feel better.
Nice DOF. There is something strange going on with the left side of the shot, the queen looks like it is about to fall over. I wish there was something in the background other than flat grey....a lighting effect could have been nice.