1. e4 c5 Sicilian Defense
2. Na3 This move surprised me. It turned out to be a flaw.
Nc6 3. c3 Nf6 4. Qc2 e6 Attempting to prepare d5
5. Nf3 Prepares e5 in the case of d5, but I didn't notice this
d5 6. e5 Cramps the black position
Nd7 Retreat and attack e5
7. Bb5 Protects e5 by pinning one of the two knights to the king
a6 Attack the pinner. White can keep the annoying e5 by d4, so piling up on e5 wont help
8. Bxc6 Create a pawn island in blacks pawn structure
bxc6 The benefit for black is that there are more central pawns
9. O-O Be7 Prepare f6. Can't do it too early because it would bring the queen out before her minor pieces are around to help. F6 on move 9 could lead to loss of castling privileges or a pawn still being left on e5 hampering the development of the dark black bishop.
10. d3 I was surprised with d3 rather than d4
O-O continue f6 preparation
11. Bf4 Adding support for e5
f6 The break. Note the knight on a6 is hampered by its own queen and by the black d5 and a6 pawns. This makes any thought of d5-d4 by black a bad idea
12. Bg3 After f6xe5 the bishop would have been hanging so would have had to take on e5. This would lead to RxNf3! gxf3 NxNe5
fxe5 13. Nxe5 As above, the bishop cannot take
Nxe5 14. Bxe5 Bd6 The white bishop cannot find a safe spot on the dangerous a1h8 diagonal. If it exchanges then it develops blacks queen. I expected a retreat to g3, where I wouldn't be able to swap without opening up the f-file for whites rook
15. Qe2 Supports the bishop
Bxe5 Trade bishops and bring the white queen into a central position. The central position isn't as strong as it looks because there is no piece support yet
16. Qxe5 Rf5! Push the queen back, she has no safe way to move forward. Qf6 could be met with Rfe1, and blacks light squared bishop is bad, so still only has two defensive developming moves available
17. Qe3 Retreat and attack the hanging pawn
Qe7 Defend the pawn and move the queen off the back rank. Threaten to pin g2 with rook or queen to g5
18. d4 force the echange of pawns. If d2-d4 was played earlier white would have had an extra tempo now
cxd4 19. cxd4 e5! Makes room to activate the bishop. If dxe5 then rxe5 and black gains tempo. Expected f3 ( stopping e4 ) , f4 ( e5xf4 not possible because the black queen is hanging ) or Rfe1
20. Nc2 The Knight was still hampered on a6. This move attempts to regroup it to bring it back into the game. It is still hampered on c7 because of the white queen and pawn blocking it, so the only move it is threatening is a future pawn fork by Nb4. As it turns out Nc7 was the fatal spot
Bd7 Make Nb4 pointless by having both pawns protected, and get the bishop of the back rank so that the final rook can be activated
21. Rae1 Threatens dxe5
e4 protects the pawn
22. f3 threaten f3xe4 splitting blacks pawn structure
Re8 The rook can go to f8 or e8. Raf8 leads to fxe4 Rxf8 Rxf8 Qxe4 where the game is materially even but very loose. Rae8 leads to fxe4 Rxf1 Rxf1 Qxe4 ( threatesns knight ) Qxe4 dxe4 and black has a passed pawn
23. fxe4 Rxf1+ 24. Kxf1 Unexpected. The passed pawn would now come under threat from the king and the rook so would fall easily
Rf8+ This move was thought out through to the end as shown
25. Kg1 Ke2 loses to Bg4+ Kd2 Qxe4 Qxe4 dxe4 Rxe4 Rf2+ Kc1 Bf5 or similar
Qxe4 26. Qxe4 dxe4 27. Rxe4 The pawn was poisoned
Bf5 0-1 28 Re2 Bd3 29 Rd2 Rf1# or 29 Rf2 Rxf2 Kxf2 BxN and black is a bishop and five pawns against five pawns
