AU Hogwarts

Barbara has a chess board floating in front of her chair and her lips are pursed in concentration as she contemplates her next move. She looks completely engrossed in the game, oblivious to anyone who might be nearby. But looks can be deceiving.

"Queen's knight to C-4," she finally says, watching as the piece moves.

And then the board rotates 180 degrees and she's back to contemplating her next move. That knight s now in a very annoying position. She'll have to find some way to deal with that.