Vachier-Lagrave is  prepared for the central break and sacrifices a pawn in return. This lures the queen to a dangerous spot.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f6e4 Deac joined the  tournament as a last-minute replacement, which did not prevent him from  demonstrating a new opening line. According to Megabase, this is the first time that the talented Romanian GM chooses the Open Ruy Lopez. Impressive!  6. d2d4  6... b7b5  7. a4b3  7... d7d5  8. d4e5  8... c8e6  9. b1d2  9... f8e7  10. c2c3  10... e8g8  11. b3c2  11... f7f5  12. e5f6  12... e4f6  13. a2a4 According to the same Megabase, 13.Re1 is becoming  the main line. 13... b5b4  14. f1e1  14... e6g4  15. d2f1 This is a novelty. Black's position  looks active and aggressive, but as it often happens in the Ruy Lopez,  White's hidden attacking potential should not be underestimated. 15... e7c5 The same active policy. 16. c1e3 Here Deac spent an enormous amount of time on his clock trying to figure out if he should force  matters or not. At the end, after more than half an hour, he went for it. 16... d5d4  17. c3d4  17... c6d4  18. e3d4  18... g4f3  19. d1f3  19... d8d4 