that game was chess960.
see http://support.chess.com/Knowledgebase/Article/View/143/16/how-do-i-castle-in-a-chess960-game
Resolved: Castling goes to wrong squares.
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I just castled after my opponent castled and it seems as though the pieces ended up on the wrong squares for both players. They are all one square away from where they should be. Any answers as to why would be appreciated. Thanks. Here is link to the board. I don't get it.
http://www.chess.com/echess/game.html?id=53420848