1. g1f3  1... d7d5  2. d2d4  2... g8f6  3. c2c4  3... e7e6  4. b1c3  4... f8e7  5. c4d5  5... e6d5  6. c1f4  6... c7c6  7. d1c2  7... g7g6  Probably Black's most important idea in the Carlsbad: getting rid of the  weak light-squared bishop. 8. e2e3  8... c8f5  9. f1d3  9... f5d3  10. c2d3  10... b8d7  11. h2h4  This is how White tries to make use of the opponent's weakened kingside  nowadays. 11... a7a5 N 12. e1f1 "I felt this is strange." (Aronian) 12... a5a4 Consistently creating play on his flank. Aronian is not in a  hurry to castle any time soon. 13. a2a3  13... d8b6 