1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. g1f3  3... g8f6  4. e2e3  4... g7g6 The Schlechter Variation is passive and leads to an advantage for White without any major problems or risks. But it's still a playable line, as will be demonstrated in this game. 5. b1c3  5... f8g7  6. f1e2  6... e8g8  7. e1g1  7... c8e6 Not the most popular choice, but it was played recently by Abdusattorov in a rapid game. Bartel has also played it in November, so it was probably not a big surprise for Royal. 8. b2b3 A natural choice. Many moves are playable and almost all of them offer a small advantage to White. We have a long positional battle ahead and Bartel probably counted on that. 8... f6e4  9. c1b2  9... e4c3  10. b2c3  10... h7h6 Played in order to prevent Ng5. 11. d1c2  11... e6f5 This natural move is a novelty. 12. c2b2  12... e7e6 Bartel reinforces the center and now has the option to capture on d5 with the e-pawn. Of course, the bishop is in an uncomfortable position and this will need to be resolved with g5 or h5. 13. f1c1  13... g6g5 Freeing some space for the bishop. 14. f3d2 This is probably not the best plan. 14... b8d7  15. b3b4  15... a8c8  16. a2a4 The advance of the queenside pawns is the natural plan.