This is probably not the most accurate, although it's certainly playable.
1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. g1f3  3... g8f6  4. b1c3  4... c7c6  5. c4d5  5... e6d5  6. c1f4  6... c8f5  7. e2e3  7... b8d7  8. h2h3 This seemingly harmless system has already been played by many strong players, including Carlsen. With his last move, White, in addition to freeing a square back to the bishop on h2, prepares to play g4 and then possibly Nh4, capturing the bishop.