Ahaha, good point. Can't believe I missed that.
Best chess-related xkcd yet

The chess board was set up the wrong way :) (a3 and c3 should be black not white). I think I like this one better though.
Well, technically you have a white square on bottom right, so depends on how you look at it. But yes, A1 is a black square.
But I think it'd be hilarious to have a souvenir photo of a friend and myself playing chess on a rollercoaster.
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I thought Munroe would never trump his rollercoaster chess strip, but today's is a fine contender: http://xkcd.com/839/
(Incidentally, I can't believe it actually took me a while to figure out that the knight can't reach the centre square. Though I wonder why a white piece and a black piece are working together anyway.)