1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. d2d4  3... f6e4  4. d4e5  4... d7d5  5. b1d2  5... d8d7 A very fresh line, invented by Caruana back in 2018. What adds educational value to the story is the fact that the American found the idea after honestly analyzing his own epic win against Grischuk at the Berlin Candidates. 6. f1d3 The most natural development. 6... e4c5  7. d3e2  7... c5e6 This can be labeled a new trend. 8. e1g1  8... f8e7  9. f1e1 White's plan is clear. She needs to attack on the kingside. 9... e8g8  10. d2f1  10... c7c5  11. f1g3 This natural move is a novelty. 11... f8d8 It did not take too long for Koneru to decide to keep her valuable bishop alive. 12. g3f5  12... e7f8  13. c2c3 The bishop needs to get back on the b1-h7 diagonal, and therefore White frees a retreat path for it.