1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. g2g3  4... f8e7  5. f1g2  5... e8g8  6. e1g1  6... d5c4  7. f3e5  7... b8c6  8. e5c6  8... b7c6  9. b1a3  9... e7a3  10. b2a3  10... c8a6  11. d1d2  11... a8b8  12. d2a5  12... b8b6  13. a3a4  13... d8d6  14. a2a3 "A good move. At least for one game." (Mamedyarov) The idea is to prevent the d6-b4 maneuver which  trades the queens. 14... f8b8 Black believed that this is a mistake and that White should  be better after his next obvious move. 15. e2e4  15... c4c3 So played the only move that his opponent did not analyze at home but it turned out to be a  mistake. 16. e4e5  16... d6d8  17. e5f6  17... a6f1  18. g2f1  18... c3c2  19. a1a2 Missed by the American GM. 19... d8d5  20. a5d5  20... c6d5  21. a2c2 In comparison from the line from above White kept  the active rook alive and this is enough for the win. 21... g7f6  22. c2c7  22... b8b7  23. c7c5 It is important not to swap the rooks off as the  white one cements the position. 23... g8g7 