So does not back up and launches a decisive attack.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4 The Italian is the new Ruy Lopez in complexity and a chance to play for a win nowadays. 3... f8c5  4. d2d3  4... g8f6  5. e1g1  5... d7d6  6. c2c3  6... e8g8  7. h2h3  7... h7h6  8. f1e1  8... a7a6  9. a2a4 9.Nbd2 is the topical line these days. 9... a6a5 \"He surprised me [with this move], of course. I knew the move, but there are better tries for Black\" (Firouzja). So spent his rest day well and as we shall see got more than he could have dreamt for from the opening. 10. b1d2  10... c8e6  11. b2b3  11... f8e8  12. c1b2 A top novelty, but most likely we shall not see it too often... In hindsight, White regretted playing this, and felt that he should have played better. 12... d6d5 Forcing an immediate resolution in the center. That is Black's key resource. 13. c4b5  13... d5e4  14. d3e4 Only this is the real mistake. 14... f6h5 \"I completely underestimated this move. I felt kind of stupid, as it is an only move. If he backs up, he is worse. Then I felt I should hold here, but with very precise play.\" (Firouzja) 15. d2c4 Played after a bit more than five minutes on the clock. It seems as Firouzja did not yet feel how bad the situation is.