Annotated chess game: Mathematics Nerd's IV

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ANNOTATED GAME

Mathematics Nerd's IV
bakerbaker (1646) vs. jeehosephat (1466)
Annotated by: bakerbaker (1200)
Chess opening: Ruy Lopez (C70)

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14... Ng6 15. c5 Bf8 16. Qd2

This is where I blundered sadly. I am going to lose a piece next move, but since no pieces have been exchanged yet, there's still a lot of time left in the game for me to come back.

16... g4

Arrghhh!

17. Ng5

I thought this was the best way to give up the piece, but I think I may be wrong. Tell me if you see a better way.

17... fxg5 18. Bxg5 Re8 19. Qxb4

I have two pawns for the piece, and my huge queenside territory may overwhelm the black king later. I would say that I have enough compensation for my blundered piece, but I'm not a grandmaster.

19... Be7 20. Be3

It usually isn't good to trade when you're down material, unless your opponents piece is more important than yours. Black's bishop can't do much, while my bishop can become strong when I attack Black's king.

20... Nf4 21. Qc4

I am preparing to unblock the b-file and play b2-b4-b5, while also threatening the crushing c6!

21... c6

Blocks c6.

22. Nc3 Nf6 23. d6

Because of the cramped nature of this position, me being down a piece doesn't matter much. It's too early in the game for material to be of much importance.

23... Bd8

Better than Bf8, which would cramp his position even more.

24. Ba4

I'm trying to entice Black to play Bxa5, because I have (Bxc6 Bxc6 Rxa5) or (Bxc6 Bxc3 Bxb7 Kxb7 bxc3) which would both give me my pawn back, while further exposing Black's weak king position.

24... h5

I think it is harder for Black to complete a mating attack than it is for me since my king's position is more solid and not overextended.

25. b4

I plan to sacrifice a piece on b5 if I need to. I'll try any desperate sacrifice to exploit Black's weak king before he finishes his attack. I'm already down a piece and will try anything.

25... Qg8 26. Qf1

No I do not want to trade queens. Black wants the easy way out of a winning game, by mindlessly trading until the board is simple enough to exploit his material advantage. If you're good, you'll know that being up a piece this early in the game isn't winning yet. It is unclear since there are so many pieces on the board.

26... Ne6 27. b5

It's now or never. I plan to sacrifice my bishop to breakthrough to Black's king, while also giving me a strong a-pawn.

27... Bxa5

I forgot about my tactical trick earlier, and now it won't work. I considered resignation here, since I'm down a piece and my attack is dying, but I saw a brilliant win if Black falls for my trick.

28. bxa6

Here, Black's winning move is Ba8, and then he's up a piece and putting pressure on my e4-pawn and my c3-knight and my a5-e1 diagonal, but watch how Black's humorous blunder gave me a brilliant tactic.

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28... Bxc3

YES!!!!!!! This is one of the few times in chess where my opponent has fallen for a trap that I deliberately set. Black sees that Ba8 Rec1 Bxc3 Rxc3 Nxe4 will leave him up a piece for a pawn, so he jumps at the chance to take a piece while forking my rooks, so that he'll end up with an extra rook once the smoke clears. But Black has underestimated my queenside attack tactics against his exposed king.

29. axb7+

Black should've just kept his extra piece and probably win, but his greediness for a rook has lost the game for him. Now there are a lot of winning lines for me. Obviously (Kd8 b8=Q#) and (Kd8 b8=R#) are ones, and (Kxb7 Reb1 Kc8 Qa6 Kd8 Rb8#) is a less obvious one, and (Kxb7 Reb1 Ka7 Bxc6 Bxa1 Rxa1 Kb8 Ra8#) is an even less obvious one. But what if Black plays Kb8?

29... Kb8

I gave out the obvious winning moves for me if Black had played Kd8 or Kxb7, but now my winning moves are less obvious, and Black thinks he's off the hook and can win a rook freely. But there is still an unobvious winning tactic against Kb8.

30. Qa6

Threatening Qa8#.

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