1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. b1c3  4... f8b4 The Ragozin Defense is one of the most popular at the high level right now. 5. c4d5  5... e6d5  6. c1f4 A less popular move than the more natural development with 6.Bg5, but which also has its supporters at the highest level. Radjabov has played this system a few times. 6... e8g8  7. a1c1  7... c8f5 This is a rare move. 8. a2a3  8... b4c3 This move is a novelty, but it had been suggested by GM Krasenkow in his analysis of the game Svidler-Giri, 2015, in which 8...Ba5 $6 was played. 9. c1c3  9... c7c6  10. e2e3  10... f6e4  11. c3b3 A curious move that poses some problems for Black. 11... b8d7 Erigaisi decides to sacrifice the pawn. That will be the reason for his misfortune a few moves later. 12. f1e2  12... c6c5  13. e1g1  13... c5c4  14. b3b7 White's rook is not in as grave danger as it appears at first glance. 14... d7b6  15. f3e5  15... d8c8  16. b7e7  16... c4c3  17. b2c3  17... e4c3  18. d1d2  18... f7f6 This move loses to Radjabov's brilliant response. 19. e2f3 A brilliant move, sacrificing the knight but taking advantage of the tactical themes associated with the Rc1 move and exploiting the pin on the c3-knight. 19... f6e5  20. f4e5  20... f8f7  21. e7f7  21... g8f7  22. f1c1  22... b6a4  23. f3d5 The justification of White's play. 23... f5e6  24. d5f3 Here and in the next moves White has several alternatives that are also winning. Radjabov plays it safe and converts his advantage smoothly. 24... e6g4  25. f3a8 