1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. h2h4 A frequent Anti-Grunfeld line at the World Cup. 3... f8g7  4. b1c3  4... d7d6  5. e2e4  5... b8c6  6. d4d5  6... c6e5  7. f1e2  7... h7h5 Carlsen is trying to benefit from the h2-h4 move. He secures the position of his centralized knight. 8. c1f4 Fedoseev  replies with a novelty. This is his way of fighting the knight: by trading it. 8... e8g8  9. g1f3  9... e5f3 