1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6 There are many ways to face the Berlin Defense, probably the most reliable variation for Black, along with the Petroff. It's possible to choose a long-term strategic game with 4.d3 to fight in the endgame like how Kasparov got so much headache in his match with Kramnik or look for a computer line in which your opponent needs to remember many moves to make a draw. Firouzja chooses the last option. 4. e1g1  4... f6e4  5. f1e1  5... e4d6  6. f3e5  6... f8e7  7. b5f1  7... c6e5  8. e1e5  8... e8g8  9. d2d4  9... e7f6  10. e5e1  10... f8e8  11. c1f4  11... e8e1  12. d1e1  12... d6e8  13. b1c3 [%c_effect c3;square;c3;type;Interesting;persistent;true] An interesting pawn sacrifice that is regarded as equal by opening theory with some long forcing lines. 13... f6d4 The best way to refute a sacrifice is by accepting it, as the saying goes. 14. c3d5  14... d7d6  15. f4g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] 15... f7f6  16. g5h4  16... d4b2  17. a1b1  17... b2e5  18. f2f4  18... c8e6 [%c_effect e6;square;e6;type;Mistake;persistent;true] A new move and I guess a memory lapse, as Black is practically lost after it. 19. f1c4 [%c_effect c4;square;c4;type;GreatFind;persistent;true] 19... e5d4  20. g1h1  20... e6f7  21. e1e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] This move refutes Black's play. The queen is centralized and keeps an eye on the h7-pawn. 21... d4c5  22. d5e7  22... g8f8  23. e4h7 [%c_effect h7;square;h7;type;GreatFind;persistent;true] 23... f7c4 [%c_effect c4;square;c4;type;Mistake;persistent;true] After this move, there's no hope. 24. b1e1  24... d8e7 Black is forced to give up the queen to prevent mate. 25. e1e7  25... f8e7  26. h7e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] An important detail: the light-squared bishop is lost. 26... c4e6  27. f4f5  27... a8d8  28. g2g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] Firouzja keeps playing with energy. He wants to open the king's position. 28... c7c6  29. g4g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] 29... e7f8  30. f5e6  30... f8e7  31. g5f6  31... g7f6  32. e4g4 The queen is heading for g8, and the game is over. 32... d6d5  33. g4g8  33... c5d4  34. h4g3  34... d4e5  35. g3e5  35... f6e5  36. h2h4 [%c_effect h4;square;h4;type;GreatFind;persistent;true] 36... e5e4  37. h4h5  37... d5d4  38. g8f7  38... e7d6 