1. c2c4  1... c7c5  2. g1f3  2... g8f6  3. b1c3  3... b8c6  4. d2d4  4... c5d4  5. f3d4  5... e7e6  6. a2a3 This is the second most popular move in this well-known variant of the English Opening. 6.g3 is the most played, but White has several other tries. 6... f8e7  7. e2e4  7... e8g8  8. d4f3  8... d8a5 A modern move, played several times by elite players. The idea is quite concrete: Black's queen heads to an exotic location on h5, from where it will support the d7-d5 advance. 9. c1d2  9... a5h5  10. h1g1 An interesting idea that was created in the laboratory of GM Giri, a player with phenomenal opening preparation. It has been played only once before, but both players were clearly well prepared. 10... d7d5 The critical test. 11. g2g4  11... f6g4  12. c4d5  12... e6d5  13. c3d5 Both players got into this position quickly, evidently relying on their respective computer's analysis. 13... e7c5  14. d1e2 An important move, defending the f2-pawn by tactical means, as well as setting up long castling. 14... f7f5 The best move, opening the game and securing a square for the queen on f7. 15. d5f4 Gukesh thought for a long time before playing this move. His preparation was either over or forgotten.