comment: Black gains space on the queenside.
context: 1. e2e4  1... e7e5  2. g1f3  2... g8f6  3. f3e5  3... d7d6  4. e5f3  4... f6e4  5. d2d4  5... d6d5  6. f1d3 Vachier-Lagrave's games are generally entertaining and important from a theoretical point of view. Fans of the king's pawn, the most classic and beautiful way to start a chess game, follow the games of the French GM with particular interest, since he is the perfect model of a modern player faithful to Bobby Fischer's favorite move. The Frenchman certainly admires the American genius, since his style is similar to his, including the openings. 6... f8d6 Nepomniachtchi's favorite move in the Petroff. 7. e1g1  7... e8g8  8. c2c4  8... c7c6 A critical position that Nepomniachtchi has been successfully defending at the highest level for some years now. 9. b1c3  9... e4c3  10. b2c3  10... d5c4  11. d3c4  11... c8g4  12. c4d3 A rare move. The natural reaction to the pin is to play h3 and then g4, chasing away the bishop. 12... b8d7  13. a1b1 