1. d2d4  1... g8f6  2. g1f3  2... d7d5  3. e2e3 The Colle system quickly turns into a reversed  Queen's Gambit Accepted. 3... c7c5  4. d4c5  4... e7e6  5. b2b4  5... a7a5  6. c2c3  6... a5b4  7. c3b4  7... b7b6  8. f1b5  8... c8d7  9. b5d7  9... b8d7  10. a2a4  10... b6c5  11. b4b5 The arising position is reminiscent of the Triangle  system with the colors reversed. The plans of the sides are obvious: Black is going to use his strong center to build up a kingside attack, whereas  White will push his passers as far as he can. 11... f8d6  12. c1b2  12... e8g8  13. e1g1  13... d8c7  14. b1d2  14... c5c4  15. b2c3  15... e6e5 In line with the plan. So needs to  remove the white kingside knight as quick as possible. 16. a4a5 Firouzja prefers to push the pawns one rank closer to their  promotion rather than defend his h2-pawn. 16... e5e4  17. b5b6 The point. 17... c7b8  18. f3d4  18... d6h2  19. g1h1  19... h2e5  20. d4c6 Picks up the important  defender of the dark squares. 20... b8d6  21. c6e5  21... d7e5  22. g2g3 Firouzja believes in his kingside  stability. But this might have been a tad too risky. 22... f6g4 Now So's knights are becoming frightening. 23. h1g2  23... d6e6  24. a1b1 White is following a very neat plan that intends to surround the key  d5-pawn.