This is the first challenge I destroyed by not reading the challenge details...I think had I have read them I wouldn't have submitted this...nontheless...good picture, was fun, and lesson learnt =)
OK, so Lydia was a bit off! She's a bit tired this week! ;) I suspect that many, including myself, did not see the squares as the subject given your title and placement of the queen in the composition. Anyway, the mirror adds the perspective from the other player, I like that aspect of the image.