A nice prophylaxis $1
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... b7b6  4. g2g3  4... c8b7  5. f1g2  5... f8e7  6. e1g1  6... e8g8  7. f1e1  7... a7a5 A rare continuation, and as GM Krasenkow explained it: \"One of the useful moves. Black waits for Nb1-c3 to reply with ...Nf6-e4.\" It should be added that Rapport likes playing like this and it certainly carried the effect of the surprise. 8. c1g5 Cervantes delays the development of the knight. 8... f6e4 But the knight visits the center anyway. 9. g5e7 Played after some hesitation. 9... d8e7  10. f3d2  10... f7f5  11. d2e4  11... f5e4  12. b1c3  12... d7d5  13. c4d5 A logical novelty. 13... e6d5  14. d1b3 But that is premature. 14... e7b4 \"I just started feeling pretty good about my position, because this endgame is very comfortable for me. I feel like I can't basically lose it.\" (Yu) 15. e1d1  15... b8a6  16. a1c1 But Cervantes misses her chance. 16... b4b3  17. a2b3 The endgame is indeed very pleasant for Black and she plays it neatly.