[%c_effect c5;square;c5;type;GreatFind;persistent;true] This same position was played in the third game of the first match between them. On that occasion, Vachier-Lagrave chose 9...Nfd7, a move that is not quite in his spirit. I wonder if he had time to check the sharper variation with 9...c5 to play this game.
1. d2d4  1... d7d5  2. c2c4  2... d5c4  3. e2e4  3... e7e5  4. g1f3  4... f8b4  5. b1c3  5... g8f6 [%c_effect f6;square;f6;type;Interesting;persistent;true] A modern alternative to the more popular 5...exd4. 6. f3e5  6... b7b5  7. f2f3  7... e8g8  8. a2a3  8... b4a5  9. c1e3 This natural move is a theoretical novelty.