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 