1. g1f3  1... d7d5  2. g2g3  2... g7g6  3. d2d4  3... f8g7  4. c2c4  4... c7c6  5. f1g2  5... g8f6  6. e1g1  6... e8g8 The system with c6-d5 in the Grunfeld Fianchetto has been played in thousands of games, even at the world championship level. It's one of Black's most solid options. 7. f1e1 A big surprise. I've never seen this move before. Can you imagine this is only the 15th most-popular move in the position $2 It was played by a GM just twice before, both times in blitz games. So it's safe to say that this is nearly a new idea. 7... d5c4 A principled reaction, played after a long reflection. One feature of Ding's style is that he's not afraid to go for complicated and forcing variations, even when he might face advanced preparation. 8. e2e4 Officially a new move. This is obviously White's idea 7.Re1. 8... c8g4 A good reaction, pinning the knight and exerting pressure on the center. 9. b1d2 The first choice of the computer. Gukesh was still following his preparation. The knight attacks c4 and also prepares to capture on f3. 9... c6c5 A surprising move, probably played in order to take Gukesh out of his preparation. 10. d4d5  10... e7e6  11. h2h3 White had a difficult choice at this point. This move is very natural, but capturing on c4 might be even more accurate.