1. d4 d5 2. c4 e6 3. Bf4 Nf6 4. cxd5 Nxd5 5. Bg3 Not wanting to trade the bishop, since the centre is being opened 5... c5 6. e4 removing the knight from the centre
Qa5+ Black wants the response Nc3 Nxc3 bxc3 Qxc3+ Ke2 where black is a pawn up and whites king is trapped in the centre with a hard to develop kingside
7. Nd2 The knight is developed to protect the hanging e4 pawn and so the threat to blacks knight is renewed
Nf6 whites d4 is now hanging
8. e5 Threatens the knight again, but also blockades the e pawn making it harder for black to get his light bishop into play, and harder to challenge the centre
Ne4 Threatening to trade queens and knight then win the d pawn. Alternatively threatening the bishop with some interesting tactics on d4/e5 to follow
9. Nf3 Trying to protect d2 and d4.
cxd4 The other option Nxg3 left white a pawn down with serious problems e.g. Nxg3 hxg3 cxd4 ( Nxd4?? Qxe4+ Ne2 Qxb2 ) Rc1 Nc6
10. Qc2 Nxd4 would have been a blunder here after Nxg3 hxg3 Qxe5+ Ne2 Qxb2. The text move instead accepts the pawn loss and tries for counterplay forking the knight and bishop
Nc5 Moves the knight to block the attack on the bishop
11. Nxd4 The pawn is now safely captured because the g3 bishop supports the e5 pawn
Bd7 Now the pressure is on black, as he has difficulties in developing both bishops
12. Be2 a3 although threatening b4 didn't seem to end up anywhere e.g. a3 Qc7 Rc1 Kd8 etc.
Nba6 13. O-O Getting the king sahe and releasing the pin. Again a3 looked stroung but there were a lot of tactical responses such as Nb4
Rc8 14. Nc4 Developing a nice knight front, and preparing to centralise the rooks on the open c&d files
Qd8 15. Rac1 Nd6+ Bxd6 exd6 capturing the bishop pair was rejected because the pawn on d6 would be too hard to defend, and allows blacks e pawn mobility again
Be7 16. Rfd1 O-O 17. a3 b5 18. Nd6 Rb8 A strange move, but black does not want to trade bishop for knight with the centre almost open. Unfortunately he probably had to given that the b5 pawn is attacked thrice and only defended twice
19. N6xb5 Qb6 protecting a7 and joins the rooks. Lined up with b2
20. b4 The knight has only one place to go. The knight will be forced into the awkward b7 square where it splits the QR battery and puts both knights near the queenside edge. It also makes blacks heavy pieces on the b-file pointless
Nb7 21. Nf5 I think this is the most tactical move I've ever made. I'm not sure it is correct though. What do you think? Here are some responses that I looked at: Bxb5 Nxe7+ Kh8 Nc8! when at least the bishop is lost since the queen is the only protector of it, the only counter threat loses like Raxc8 Qxc8 ( Rxc8?? Rxc8# ) Kg8 Bxb5 Qxb5 Rd7 winning the knight. Alternative 2 is exf5 Rxd7 with lots of variants since the bishop on e7 and the pawn on f5 are both threatened, e6 threates a discovered attack on the rook and back rank mates are threatened. Alternative 3 is counterattack by Rc8 ( either ) which loses to Nxe7+. Alternative 4 is defending one bishop Rfe8 Rxd7 exf5 Nc7 Nxc7 Qxc7 ( and it is a feast on the seventh rank ) Qxc7 Rxc7 ( the pigs fork the bishop and knight ) Kf8 Rxb7 and the game is soon over. Alternative 5 is defending both bishops Qd8 Nxe7 Qxe7 Nxa7 Ra8 Bxa6 Rxa7 b5 when the connected passed wing pawns, bishop pair, back rank mate threats and 7th rank threats should overwhelm black
Bg5 My opponent foud a different counter, which I had overlooked, missing the fact that I can't play f4 because the queen pins the f-pawn
22. Rxd7 Alternatively Ne7+ Kh8 Rxd7 Bxc1 Qxc1 and black still has problems
Rbc8 A mistake due to the back rank mate threats
23. Qxc8 Rxc8 24. Rxc8+ Winning two rooks and initiative for the queen
Nd8 Temporarily fortunate for black that he controls d8
25. Ne7+ Most importantly blocking a d8 defender, so threatening mate
Bxe7 Kf8 would lose the queen for rook and knight
26. Rxe7 Threatens Re8#
Kf8 27. Rd7 Threatens to win knight and queen for rook
g6 Opens breathing space for the knig and abandons the knight
28. Rcxd8+ Kg7 29. Nd6 Threatens Rxf7 with mate close by
Qc6 Blacks only hope is for a back rank mate against white.. so white playing Bf3?? is hoped for
30. Bf4 Mate is imminent e.g. g5 Bxg5 Qc1+ Bxc1 h6 Rxf7+ Kg6 Rg8#
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