[Event "83rd Tata Steel Masters 2021"]
[White "Carlsen,Magnus"]
[Black "Firouzja,Alireza"]
[Site "Wijk aan Zee"]
[Round "1.1"]
[Annotator "PC"]
[Result "1-0"]
[Date "2021.01.16"]
[WhiteElo "2862"]
[BlackElo "2749"]
[PlyCount "79"]
1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Nbd7 5. Bg5 h6 6. Bh4 Be7 7. cxd5 Nxd5 8. Bxe7 Qxe7 9. e4 Nxc3 10. bxc3 0-0 11. Bd3 c5 12. 0-0 cxd4 13. cxd4 b6 14. a4 Bb7 15. a5 bxa5 16. Rxa5 Nf6 17. Re1 Rfd8 18. Qa1 Qc7 19. h3 a6 20. Rc5 Qf4 21. Re5 Nd7 22. Ra5 Nf6 {[#]} 23. d5 {White goes for it.} (23. Re5 Nd7 24. Ra5 Nf6 25. Re5 {Most likely, Firouzja would have agreed to repeat the position,
getting a draw with black against the world champion in round 1 of a tough
event.} )exd5 24. e5 Ne4 25. Qd4 Rdc8 26. Raa1 a5 27. Rab1 Bc6 {[#] In
order to make the most of the initiative, Carlsen frees a square for his
knight by giving up another pawn.} 28. e6 fxe6 29. Ne5 Qf6 {Around this
point, commentator Peter Leko stated: "I would say [White] is completely
winning...if he wasn't two pawns down".} 30. f3 Ng5 31. Rb6 Be8 32. Qe3 a4 33. Ng4 Qd8 34. Rxe6 Nxe6 35. Qxe6+ {White's position looks menacing, but if
Black survives he has an extra pawn - and a very dangerous one at that.} Bf7 {
This was the losing blunder. Black now breaks through decisively.} (35... Kh8 36. Qf5 Qb6+ {A key intermediate check.} 37. Kh1 Bg6 {giving up the piece, as
after} 38. Qxg6 Qxg6 39. Bxg6 a3 {the a-pawn is a beast.} )36. Nxh6+ gxh6 37. Qxh6 Qc7 {Black is busted.} 38. Qh7+ Kf8 39. Qh8+ Bg8 40. Qh6+ 1-0