A novelty, which should have been  anticipated by the French GM.
1. g1f3  1... g8f6  2. c2c4  2... c7c5  3. b1c3  3... d7d5  4. c4d5  4... f6d5  5. e2e3 Vachier-Lagrave has a lot of  experience in this Anti-Gruenfeld. 5... d5c3  6. d2c3  6... d8c7  7. e3e4  7... e7e6 