 Asking the bishop to chose a side.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. c1g5  6... e7e6  7. f2f3 "I  wanted to try something new, get some positions that he is not that  familiar with. I think that succeeded fairly well." (Carlsen)