Lesson
White to move. Main line: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. g5 b4 13. Ne2 Ne8 14. f4 a5 15. f5 a4 16. Nbd4 exd4 17. Nxd4 b3 18. Kb1 bxc2+ 19. Nxc2 Bb3 20. axb3 axb3 21. Na3 Ne5 22. h4 Ra5 23. Qc3 Qa8 24. Bg2 Nc7 25. Qxc7 Rc8 26. Qxe7 Nc4 27. g6 hxg6 28. fxg6 Nxa3+ 29. bxa3 Rxa3 30. gxf7+ Kh7 31. f8=N+ Rxf8 32. Qxf8 Ra1+ 33. Kb2 Ra2+ 34. Kc3 Qa5+ 35. Kd3 Qb5+ 36. Kd4 Ra4+ 37. Kc3 Qc4+
White castles queenside and launches g4 and g5, while Anand advances ...b5, ...b4, ...a5 and ...a4. The central capture 16...exd4 opens routes toward the white king and gives Black forcing play.
The b-pawn reaches c2 with check, and the bishop sacrifice on b3 tears apart White’s queenside. Although Karjakin’s g- and f-pawns advance dangerously and even promote to a knight with check, Anand keeps the initiative.
The rook checks on a1, a2 and a4 force the white king into the open, and 37...Qc4+ ends the game. The lesson is about attack speed: count forcing moves and arrival times on both wings instead of assuming the first visible pawn storm is stronger.