1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g2g3  3... d7d5  4. f1g2 The Catalan opening is one of the most important in chess. Nowadays, every professional chess player must be familiar with its theory. 4... d5c4 One of the best options for Black, along with developing the bishop on e7 or b4. 5. g1f3  5... b8c6  6. d1a4 Trying to win back the pawn, before Black can play Rb8-b5, which leads to sharper play. 6... f8b4  7. c1d2  7... f6d5  8. e1g1  8... b4d2  9. f3d2  9... e8g8  10. e2e3  10... e6e5 Taking advantage of the fact that the knight is not on f3 to break the white center. 11. a4b5  11... d5f6 This is a new move. I'm curious to see how Gukesh would react to 11...Be6, which seems to lead to equality. 12. d4e5 Probably the best attempt, although the position remains equal. 12... a7a6  13. b5c4  13... c6e5  14. c4c2 There's a typical pawn structure on the board. The position is level, but there's still plenty of life left. If White manages to advance the center, Black's situation could become dangerous. 14... c7c6  15. b1c3  15... a6a5 Played to improve the structure on the queenside and possibly prevent the minority attack with b4-a4-b5. 16. a1d1  16... d8e7  17. h2h3 A typical move to take the g4-square from the knight. White is ready to start pushing the pawns. 17... c8e6  18. f2f4  18... e5c4  19. d2c4 