1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5 The Rossolimo variation is nowadays nearly as important as the Open Sicilian. 3... g7g6  4. e1g1  4... f8g7  5. b5c6  5... b7c6 This is not the main move, but in general you are fine if you capture toward the center. 6. f1e1  6... d8c7 A subtle idea and only the seventh most popular move. Black plays a useful move before developing the knight or playing d7-d6. The queen is always useful on c7. 7. h2h3 A smart idea. This move is useful in many ways: to give the king some air and to take the g4-square from the opponent's knight or bishop. 7... d7d6  8. e4e5 A typical positional sacrifice to disrupt Black's pawn structure. 8... d6e5  9. d2d3  9... c5c4 Gukesh gives the pawn back before Caruana can play Nbd2. Either the c5- or the e5-pawn will be lost in the long run. It's better to sacrifice one of them immediately to improve the pawn structure. 10. b1c3  10... c4d3  11. c2d3  11... g8h6 This is a novelty, but not a successful one. 12. f3e5  12... h6f5  13. c1f4 Material equality is now restored. White has the better development and the initiative. 13... c7b7  14. c3a4  14... f7f6 