The safest.
1. c2c4  1... g8f6  2. g2g3  2... e7e5  3. f1g2  3... d7d5  4. c4d5  4... f6d5  5. b1c3  5... d5b6  6. g1f3  6... b8c6  7. e1g1  7... f8e7 A very classical approach against the English Opening. 8. b2b3 And a move that is gaining popularity of late in turn. The double fianchetto is common for the Dragon defense (which we have with reversed colors). 8... e8g8  9. c1b2  9... f8e8  10. a1c1  10... e7f8  11. c3e4 Robson is preparing Ne4-c5, d2-d4, and something more. .. 11... a7a5 Aronian in turn wants to disturb the white queenside, but he underestimates White's major point. 12. c1c6 A standard exchange sacrifice a la Petrosian, which turns out to be a novelty $1 12... b7c6  13. f3e5 For the exchange, Robson gets a powerful central pawn, and he has spoiled the opponent's pawn structure for good. More gains are inevitable. 13... c8b7  14. e2e3  14... f7f6  15. e5c6 A second powerful blow on the c6-square $1 15... d8d7  16. d1c2  16... b6d5  17. f1c1  17... a5a4  18. b3a4 It is not just the pawn; Robson is gaining access to the light squares. 18... e8e6 Aronian keeps trying to get rid of the annoying knight and misses one last tactic on the long diagonal. 19. c2b3 Power blow $1 The X-raying against the black king decides $1 19... e6c6  20. e4f6 The point. 20... c6f6  21. b3b7  21... a8a5  22. b2f6  22... d5f6 