[%c_effect c4;square;c4;type;Mistake;persistent;true]
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. c1e3 Carlsen decides to enter a theoretical battle in the Najdorf Defense. 6... f6g4  7. e3c1  7... g4f6  8. f2f3  8... e7e6  9. c1e3  9... b7b5  10. d1d2  10... b8d7  11. g2g4  11... b5b4  12. c3a4  12... h7h6  13. e1c1  13... d7e5  14. b2b3  14... c8d7  15. a4b2  15... d6d5  16. e3f4 This line was fashionable for a while, until players with White started looking for other ways to fight for the initiative. 16... e5f3 An interesting piece sacrifice first played by Topalov, but there's a better way to play. 17. d4f3  17... f6e4  18. d2d4  18... h8g8 [%c_effect g8;square;g8;type;Mistake;persistent;true] A new move and not a good one. Vachier-Lagrave probably forgot his preparation. The idea is to defend the g7-pawn and prepare ...Bc5. 19. f3e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] White has other good moves, but I like Carlsen's choice. 19... f8c5  20. d4e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] This is the point. 20... d5e4  21. e5d7  21... d8d7  22. d1d7  22... e8d7 Positions with a material imbalance are difficult to evaluate. White has the advantage, but the position is tricky.