Black prepares to complete development in a more restricted way.
1. e2e4  1... c7c5  2. g1f3  2... e7e6  3. d2d4  3... c5d4  4. f3d4  4... a7a6 This variation is a curious case of a defense that is known equally by two names: some call it the Kan, some call it the Paulsen. It's a daring choice for someone who just needs a draw, but Carlsen knows what he's doing. He doesn't play it too often, although he has tried it a few times. 5. b1c3 This, and 5.Bd3, have always been the main lines, but 5.c4 is also very popular. 5... d8c7  6. f1d3  6... g8f6  7. d1e2  7... d7d6  8. f2f4  8... b8d7  9. g2g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] A typical Sicilian fight is on the board. None of the kings have their safety guaranteed. 9... d7c5  10. g4g5  10... f6d7  11. a2a4 A theoretical novelty. White's idea is to prevent b7-b5, but this move is very compromising: when the queenside advances, White's king has no refuge. 11... f8e7  12. h2h4 