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. 9... c7c5 [%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. 10. d4c5  10... d8e8 [%c_effect e8;square;e8;type;GreatFind;persistent;true] The only way to justify Black's play. 11. d1d6  11... c8e6 Both players were blitzing their moves in what was obviously preparation. Not only that: recently reviewed preparation. 12. e1c1  12... e8c8 The dance with the queen has a good justification. Black has prepared both ...Bc7 and ...Rd8. 13. c3b5 [%c_effect b5;square;b5;type;GreatFind;persistent;true] This is a queen sacrifice. 13... a7a6  14. b5d4  14... a5c7  15. d4e6  15... c7d6 