1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... f8c5  4. c2c3  4... g8f6  5. d2d3  5... d7d6  6. c1g5  6... h7h6  7. g5h4  7... a7a6  8. b1d2  8... c5a7  9. e1g1  9... e8g8  10. a2a4  10... g7g5  11. h4g3 The early sortie of this bishop  is a double-edged sword. It might do a great job pinning the opponent's  knight, but it may end up excluded from the game. At the same time, in  order to force the bishop out of the game Black needs to advance the pawns in front of his king, thus exposing it. 11... g8g7  12. f1e1 White wants  to free his bishop with brute force. The push d3-d4 followed by e4-e5 is a threat. 12... f6h7  13. b2b4  13... h6h5  14. h2h3  14... h5h4  15. g3h2  15... g5g4  16. h3g4  16... c8g4  17. b4b5  17... c6e7  18. d3d4 Now the pressure is all over the board. 18... e7g6  19. b5a6 Giri comes well armed for the encounter and produces a  novelty. 19... b7a6  20. d2f1  20... e5d4 Optimistic play by Kovalev. 21. c3d4  21... g4f3  22. g2f3  22... f7f5 This was Black's point. However, it will  quickly transpire that this is rather weakening the black king. 23. f1e3  23... f5e4  24. f3e4  24... d8g5  25. g1h1  25... f8f2  26. e3f5 The most obvious move,  which promises White some edge. 26... g7h8  27. e1g1  27... f2h2 It is a good moment to swap off some of the  dangerous white attackers. 28. h1h2  28... g5f4  29. h2h3 The only move. 29... h7g5  30. g1g5  30... f4g5  31. d1g1 Another only, but effective move. 31... g6f4  32. h3h2  32... g5g1  33. a1g1 It seems as Black is out of danger, but Giri's  initiative persists in the endgame. How to defend against the rook lift to g4 and the mating threat? 33... d6d5 Not the best. 34. c4d5  34... f4d5  35. e4d5  35... a8e8  36. h2h3  36... a7b6 Now Black is lost. 37. h3h4  37... e8d8  38. g1g5  38... h8h7  39. g5h5  39... h7g6  40. f5e7 A nice maneuver which  completely paralyzes the black bishop. 40... g6f6  41. e7c6  41... d8e8  42. h5e5  42... e8h8  43. h4g4  43... a6a5  44. e5f5  44... f6g6 This loses by force, but it is hard to offer Kovalev good advice. 45. c6e5  45... g6g7  46. f5g5  46... g7h7 