1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5 In a must-win situation Vachier-Lagrave chooses the most complex opening, the Ruy Lopez. 3... a7a6  4. b5a4  4... d7d6  5. e1g1  5... c8g4 Rapport's choice, on the other hand can be called anything but solid. The Improved Stenitz could not have been expected by him, as the Hungarian GM tries for the first time, at least according to Megabase $1 6. h2h3  6... h7h5  7. d2d4 After some hesitation, White opts for the main line. The pawn is offered in return for the control over the -g5 square. 7... b7b5  8. a4b3  8... c6d4  9. h3g4 Now White can grab the piece as he can block the black queen access towards his king. 9... h5g4 The older line. 10. f3g5  10... g8h6 All of this was blitzed by Rapport, and his opponent sank into deep thought. 11. g2g3 After more than half-an-hour on his clock, Vachier-Lagrave deviates from the main theory. 11... f8e7  12. f2f4 [#] 12... d8d7 But Rapport was not taken by surprise and quickly fired a novelty. 13. f4f5 Only now did Black start to think. 13... c7c6 More than half-an-our thought for Black too. 14. b1c3  14... d7d8  15. g5f7 More or less forced. 15... h6f7  16. d1g4  16... d4b3  17. a2b3  17... e7g5 The opening was a big success for Rapport, he equalized in full. 18. g1g2  18... d8f6 However, this is a slight inaccuracy. 19. c3d1 A pretty move $1 The knight lands on the optimal f2-square from where it will guard the white king forever. 19... g5c1  20. a1c1  20... f6g5 There is nothing better.