context: 1. g1f3  1... d7d5  2. c2c4  2... d5d4  3. b2b4 Another different opening in a match in which the players don't want to repeat their preparation with White. 3... c7c5  4. e2e3  4... g8f6 Played after almost 40 minutes. 5. a2a3 A new move in this position, although I found one game that transposed to it. This game actually started with 1.a3 $1 5... c8g4 A new move that cost Ding a lot of time on the clock. 6. e3d4  6... c5d4  7. h2h3 