Centralization helps Black repel the attack and create threats on his own.
1. d2d4  1... g8f6  2. c2c4  2... g7g6  3. b1c3  3... d7d5  4. c4d5  4... f6d5  5. c1d2  5... d5b6  6. e2e3  6... f8g7  7. h2h4 Harry and George, Duda's favorite buddies. He uses any given moment to push them forward and these guys often help him discover the enemy king and mate it. If we have to be more serious, h2-h4 is a trendy idea in almost every single Semi-Open game and the fianchetto Gruenfeld definitely helps. 7... c7c5 A novelty in return. This temporary pawn sacrifice is often a no-brainer for the Gruenfeld player. 8. d4c5  8... b6d7  9. c3a4 This might not be the most accurate though. 9... b8c6  10. h4h5  10... e8g8 Now Mamedyarov can castle, his king is way safer. 11. h5g6  11... h7g6  12. d1g4 Duda still has no other plan but to mate. 12... d7f6  13. g4h4 