1. b1c3 Firouzja has played this move even in standard chess (see below), so why not in rapid $2 1... c7c5  2. d2d4  2... c5d4  3. d1d4  3... b8c6  4. d4a4  4... e7e6  5. e2e4 It is an original Sicilian now. 5... f8c5  6. g1f3  6... d7d6 A novelty as early as move six. 7. e4e5 Firouzja wants to justify the position of his queen, but this comes at the expense of his development. 7... d6e5  8. f3e5  8... g8e7  9. c3e4 A blunder. 9... c5b4 After a thorough think, Vachier-Lagrave finds the refutation $1 10. c2c3  10... d8d5 Black wins material. It is Firouzja's turn to find something urgently. 11. f1d3 Best, under the unfavorable conditions. 11... d5e5 The simplest solution. 12. c3b4 