White managed to destroy the  opponent's kingside but at the expense of a big delay with his  development. Therefore, Carlsen classically strikes in the center.
1. c2c4  1... e7e5  2. b1c3  2... g8f6  3. g1f3  3... b8c6  4. e2e3  4... f8b4  5. d1c2  5... e8g8  6. c3d5  6... f8e8  7. c2f5  Quite a sharp opening choice by Duda, and excellent for blitz and rapid  chess. 7... d7d6  8. d5f6  8... g7f6 