1. d4 d5 2. c4 dxc4 3. e4 Queens Gambit accepted. White sacrifices a pawn to control the centre. In this opening black can get into trouble if trying to keep the pawn. Usually better to continue development
Nc6 Threatens d4
4. Nf3 Supports d4
Bg4 pinning the knight to the queen reinstating the threat on d4
5. Bxc4 winning back the pawn but ignoring d4, see the text line for why
Nxd4 wins the pawn but...
6. Bxf7+ Sacrificing the bishop to bring the king to f7
Kxf7 7. Ne5+ The knight is pinned to the queen. This means that it can only move if it attacks something worth more! Forks King and bishop
Ke8 8. Nxg4 Returning to material balance, however blacks king is now trapped in the centre and the pawn structure is weak
e6 9. Be3 Threatens the knight and since it is pinned to the queen gives white the option for a queen trade. Ne5 would have been interesting if it weren't for the Nf6 response
Nc6 10. O-O If either side takes the queen then the take back by the rook wins the d-file, so neither side will echange yet. White could have also played Nc3 here to protect the queen, but castling to protect the king and queen avoids complications
Bd6 11. f4 Since the king is immobile a kingside attack can be launched. The pawn duo ( two pawns side by side on the on the same rank i.e. e4 and f4 ) hold the centre threatening to play e5 and f5. Also the queen can form a battery with the rook by Qf3 now
Qe7 12. e5 Black has trapped his own bishop so white can gain tempo by attacking it
Bc5 The only other move for the bishop is to b4 where it would threatened by a3 and then b4
13. Rf3 White does not want to take the bishop bringing out blacks queen with tempo. White also doesn't want to recapture with the knight because it would then be on an ugly square. This move allows a rook recapture and also if the bishop is not traded it places the rook in a position where it can head a bettery of the f-file backed by the queen or the other rook or both
Bxe3+ 14. Rxe3 h5 pushes the knight back. Since the knight is the only piece defending the rook this will leave the rook hanging. Would have been stronger if Qc5 pinning the rook to the king had been played first ( Qc5 would have been met by Qe1 )
15. Nf2 Rd8 16. Rd3 g6 17. Nc3 Developing the knight and preparing to solidify the d-file, and also providing rook protection of the back rank so that the queen can leave it.
a6 stops Nb5 but the knight was never headed there. a7,c7, and d4 were all adequately protected, and the knight wouldn't want to get to a3m the knights want to be on f6 and g5.
18. Qf3 Gets the queen off the back rank and behind the f4 pawn. Prepares Rad1, and keeps protecting the Rook on d3
Nh6 The knight wants to get to f5
19. Qg3 Threatens Qxg6+
Rg8 protects the pawn
20. Rad1 FIrms up control of the d-file
Rxd3
21. Nxd3 White has three responses. Qxd3 takes her away from harrassing the kingside, and is an empty threat while d8 is protected by the knight. Rxd3 takes the rook off the back rank. and both moves lose a pawn to Nb4 forking the piece and the a2 pawn. Nxd3 not only avoids these, but look at blacks queen. Both her diagonals are completely cut off, she can't move on the d-file due to the discovered attack by the rook so she is completely passive. Her best square is probably where she is to support g5 push
Nf5 Puts the knight on a good square and threatens the queen
22. Qf2 Removes the threat from the knight and gets the queen out of line of the enemy rook. White does not want to trade queens because white has a strong position doe to blacks immobile king so Qg5 would be bad. Also note that the queen is in line with the knight but with two squares in between. This is a nice way to avoid knights since it takes them at least two more moves to even be able to threaten you again
g5 A good looking move. Challenges the f4 pawn and if f4 falls e5 would follow also gxf4 would open up the rook to whites king pinning whites g pawn
23. Ne4 Threatens Nf6+ winning the rook and also Nxg5
gxf4 misses the threat on the rook. Expected Rf7, Rf6 or Kf1. All followed by Nxg5
24. Nf6+ Kf7 25. Nxg8 Kxg8 26. Qxf4 Rook for knight up. Nxf4 would have unbottled the black queen
Qf8 27. Qg5+ Blacks prior move made this square avaialable
Ng7 28. Rf1 Also made possible by blacks Qf8
Qe8 The only move that doesn't take the queen completely out of play
29. Nc5 Threatens Nxb7 splitting up the queenside pawns so that they are all lost. Also threatens Rf6 when e6 falls, blacks king is under attack from all whites pieces, and white has a passed pawn on e5
Na5 protects against the Nxb7 threat and opens up a giagonal for the queen, but unfortunately shes on the opposite colour to whites king
30. Ne4 Threatens Nf6+ forking the queen
Kh8 The queen needed to move instead, but there is no good spot for her anyway
31. Qh6+ Returning the king back to be forked
Kg8 32. Nf6+ Forking king and queen ( the second knight fork of the game )
Kf7 33. Nxe8+ Kxe8 34. Qxg7 Mate next move regardless
Nc6 35. Rf8# 1-0