context: 1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... a7a5 [%cal da7a5][%c_arrow a7a5;keyPressed;none;from;a7;opacity;0.8;to;a5;persistent;false] Players with Black in the Italian Opening must decide whether to place the pawn on a6 or a5. It's a matter of taste, since both have their merits. 6. e1g1  6... d7d6  7. f1e1  7... e8g8  8. c1g5  8... h7h6  9. g5h4  9... g7g5 The typical play after the pin. The game usually becomes very sharp. 10. h4g3  10... c5a7  11. b1a3 Both players have previous experience with this position. 11... g5g4  12. g3h4 [%c_effect h4;square;h4;type;Interesting;persistent;true] A move that looks very bold, but it's thematic. 12... g8g7  13. h2h3 A curious theoretical novelty. Firouzja invites Black to take the knight once again and, in addition, offers an alternative: capturing the pawn on h3. 13... g4f3  14. d1f3  14... c8e6 White has only one pawn for the piece, but Black has no simple way to get out of the pin. There's usually a theme of repeating moves with Qg3+ followed by Qf3, so White is risking less than it seems at first glance. 15. c4d5  15... d8e7  16. d3d4  16... e6d7  17. a3c2  17... f6d5 [%c_effect d5;square;d5;type;Interesting;persistent;true] 18. f3g3 [%c_effect g3;square;g3;type;GreatFind;persistent;true] 18... g7h7  19. e4d5  19... f7f6  20. d5c6  20... d7c6  21. d4e5 