1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. f2f3 Vachier-Lagrave is faithful to his Najdorf Defense and Caruana to his English Attack. A theoretical battle appears on the board. 6... e7e5  7. d4b3  7... c8e6  8. c1e3  8... f8e7  9. d1d2  9... e8g8  10. e1c1  10... b8d7  11. g2g4  11... b7b5  12. g4g5  12... f6h5  13. c1b1  13... d7b6  14. b3a5  14... a8c8  15. c3d5  15... b6d5  16. e4d5  16... e6d5  17. d2d5  17... d8a5  18. c2c4  18... h5f4  19. e3f4  19... e5f4 All this is still well-known theory. 20. h2h4 