The attack is decisive, and Anand plays superbly to demonstrate it.
1. e2e4  1... e7e6  2. d2d4  2... d7d5  3. b1c3  3... g8f6  4. e4e5  4... f6d7  5. f2f4  5... c7c5  6. g1f3  6... b8c6  7. c1e3  7... f8e7  8. d1d2  8... a7a6  9. d4c5 Anand releases the central tension immediately. Carlsen chose another move in a recent game. 9... d7c5  10. a2a3 A good, useful move against Black's b5-b4 advance. Castling immediately is also possible. 10... e8g8  11. d2f2  11... b7b6 A difficult choice. Black has two other important moves. 12. e1c1  12... d8c7 Removing the queen from the d1-rook's x-ray is useful. 13. f1d3 A new move. 13... c8b7 This is not the most accurate. 14. f2g3  14... f7f5  15. c1b1 It is always difficult to decide whether the pawn should be captured en passant or not. 15... b6b5 [%c_effect b5;square;b5;type;Mistake;persistent;true] After this error the position becomes very difficult to defend. 16. e3c5 [%c_effect c5;square;c5;type;GreatFind;persistent;true] An excellent move. The knight is removed from the board before it can land on e4. It's not easy to exchange the important dark-squared bishop, but this is done for a good reason. White's attack with g2-g4 comes very quickly. 16... e7c5  17. g3h3 White is threatening 18.Ng5 and also prepares the advance of the g-pawn. 17... g7g6 