Vachier-Lagrave does not intend to allow f4-f5.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. g2g3 This positional line is a rare occurrence at the top level. 6... e7e5  7. d4b3  7... f8e7  8. c1g5 It seems like Le is all about the d5 square. 8... c8e6 [#] 9. f2f4 Nope, he has another idea on his mind.