comment: The most dynamic move.
context: 1. e2e4  1... c7c6  2. d2d4  2... d7d5  3. e4d5  3... c6d5  4. f1d3 Carlsen has played this system many times, with both White and Black. 4... g8f6  5. h2h3 The point of ​​this move is to restrict the development of the c8-bishop. The main ideas of White's setup are using the outpost on e5 and keeping this bishop trapped behind the pawn chain. 5... b8c6  6. c2c3 The disadvantage of this move is that it allows Black to break in the center, freeing up his pieces in exchange for an isolated pawn.