1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... g8f6  4. c4d5  4... e6d5  5. c1g5  5... f8e7  6. e2e3  6... c7c6  7. f1d3  7... b8d7  8. g1e2 The knight development on e2 was Kasparov's favorite. White can wait by playing 8.Qc2 before deciding where the knight goes, or he can also play 8.Nf3. 8... d7f8 Many ideas have been developed recently to give a new flavor to Black in the Exchange Variation of the Queen's Gambit. This move is one of those ideas. It's the first time Caruana has played it. 9. d1c2  9... f8e6  10. g5h4  10... g7g6  11. a1d1 Played in just two games, but we will have a transposition in the next move. 11... e8g8  12. e1g1 With the rook on d1, it's clear that White is intending the typical plan with f3-e4. 12... a7a5 An almost new move in this position (it was played in just one game), but a well-known plan from modern games. Historically, Black didn't play this way, advancing the queenside, but computers have shown that this is a viable plan. This active plan has transformed the orthodox from a reliable but somewhat passive defense into as good a weapon for playing for a win as any other. 13. e2c1 This move allows an interesting idea that equalizes the game. 13... e6g7  14. f2f3 The game is back to normal. 14... c8e6  15. c1e2 The knight returns. 15... a8c8  16. g1h1 It's useful to free the g1-square for the bishop, since this may be needed after a possible e4-dxe4-fxe4-Ng4 (considering the bishop is on f2). 16... f6d7  17. h4f2  17... b7b5  18. e2f4  18... d7b6  19. e3e4 The opening is a relative success for White; he has the initiative. 19... e7g5  20. f2e3  20... d5e4  21. f3e4 