And what can be more concrete than this $2
1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. b1c3  3... g8f6  4. c4d5  4... c6d5  5. c1f4  5... b8c6  6. e2e3  6... c8f5  7. g1f3  7... e7e6  8. d1b3  8... f8b4  9. f1b5 After the game, Duda revealed that he was not feeling quite well prior to the game and did not object the draw. This might have been the reason for his opening choice, a calm Exchanged Slav. 9... e8g8  10. b5c6 Kramnik and Anand discussed this line at their WCC match in Bonn. 10... b4c3  11. b3c3  11... f6e4 An ambitious move, which was played after a prolonged thought. Firouzja was clearly in a fighting mode. 12. c3a3  12... b7c6  13. a1c1 Now White has everything that he wants from the pawn structure. Both c6- and a7-pawns are weak and long-term targets. Black needs to find something concrete, right now.