Jerome Gambit: You Checkmate Your Way, I'll Checkmate Mine

In the following Jerome Gambit (1.e4 e5 2.Bc4 Bc5 3.Nf3 Nc6 4.Bxf7+) game, White reaches a point where he has an overwhelming advantage. He figures out a win by checkmate, and pursues it, bypassing faster mates - in a blitz game, this is not unusual, and a win is what is necessary, not necessarily the fastest win.

otipicni - Yusiflimunire
3 0 blitz, Chess.com, 2020

1.e4 e5 2.Bc4 Bc5 3.Nf3 Nc6 4.Bxf7+ 

4... Kxf7 5.Nxe5+ Kf8 

This move is at least as old as Jerome - Brownson, Iowa, 1875 (1/2 - 1/2, 29). Some history.

6.Nxc6 

The most straight-forward continuation, although it is also possible for White to simply castle - a move that usually occurs in main line Jerome Gambit play - and look for transpositions.

Recent examples:

6.O-O Nxe5 (6...d6 7.Nxc6 bxc6 8.d4 Bb6 9.f4 Ne7 10.f5 Ng8 11.Nc3 Qf6 12.Be3 Ne7 13.Qd3 h5 14.e5 dxe5 15.dxe5 Qxe5 16.Bxb6 axb6 17.Qd8+ Kf7 18.Qxh8 c5 19.Qxh5+ Kg8 20.Qe8+ Kh7 21.Rf3 Qd4+ 22.Kh1 Nxf5 23.Rh3+ Nh6 24.Rxh6+ Kxh6 25.Qc6+ Qd6 26.Qxa8 Bf5 27.Qh8+ Kg6 28.Qe8+ Kh7 29.Rf1 Bxc2 30.Rf8 Kh6 31.Rh8+ Bh7 32.Qe4 g6 33.Qh4+ Kg7 34.Rxh7+ Kg8 35.Rh8+ Kf7 36.Qh7+ Kf6 37.Ne4+ Ke5 38.Nxd6 cxd6 39.Re8+ Kd4 40.Qxg6 d5 41.Qg4+ Kd3 42.Qf3+ Kc2 43.Qc3+ Kb1 44.Re1+ Kxa2 45.Qa3, checkmate, CasualGames4ever - Alanvarela10, 3 0 blitz, lichess.org, 2020; 6...Bb6 7.d4 Nxd4 8.Nc4 Nc6 9.Qf3+ Qf6 10.Qa3+ Qe7 11.Nxb6 Qxa3 12.Nxd7+ Bxd7 13.Nxa3 Nf6 14.Re1 Re8 15.f3 Nd4 16.c3 Ne6 17.Nc4 h5 18.Be3 a6 19.Rad1 Bc6 20.Ne5 Ke7 21.Ng6+ Kf7 22.Nxh8+ Rxh8 23.Bd4 Rh6 24.h3 h4 25.e5 Nh5 26.Be3 Rg6 27.Bd4 Bxf3 28.Rd2 Nhf4 29.Rf2 Nxh3+ White resigned, CasualGames4ever - Alanvarela10, blitz, lichess.org, 2020; 6...Qf6 7.Nxc6 bxc6 8.c3 Bb6 9.d4 Ba6 10.Re1 d6 11.f4 Re8 12.e5 dxe5 13.fxe5 Rxe5 14.a4 Rxe1+ 15.Qxe1 c5 16.a5 cxd4 17.axb6 dxc3 18.Rxa6 cxb2 19.Bxb2 Qxb2 20.bxa7 Nf6 21.a8=Q+ Kf7 22.Qxh8 Qb6+ 23.Rxb6 cxb6 Black resigned, CasualGames4ever - Alanvarela10, 3 0 blitz, lichess.org, 2020) 7.d4 Bxd4 (7...Bb6 8.dxe5 Qe7 9.Qf3+ Ke8 10.Nc3 c6 11.Bf4 Nh6 12.Qg3 Bd4 13.Rad1 Bxc3 14.Qxc3 Nf7 15.Bg3 b6 16.f4 Ba6 17.Rf2 c5 18.f5 Bb7 19.f6 gxf6 20.exf6 Qe6 21.b4 Rc8 22.Rfd2 cxb4 23.Qxb4 Bc6 24.Rd6 Qg4 25.Rxd7 Qxd1+ 26.Rxd1 Rc7 27.Bxc7 Nd6 28.Qxd6 Kf7 29.Qe7 Kg6 30.Qg7+ Kh5 31.Bf4 h6 32.g4+ Kh4 33.Bg3+ Kh3 34.Rd3 Bxe4 35.Bf4+ Kh4 36.Rh3+ Kxh3 37.Be3 Bf3 38.Qc7 Kxg4 39.Qg3+ Kf5 40.h3 Ke6 41.Qxf3 Rg8+ 42.Kf1 Rg6 43.Ke1 Rxf6 44.Kd2 Kf7 45.Qe4 Re6 46.Bf4 Rxe4 47.Kd3 Rxf4 48.c4 Rh4 Black won on time, CasualGames4ever - Alanvarela10, 3 0 blitz, lichess.org, 2020; 7...Nc6 8.dxc5 d6 9.cxd6 Qxd6 10.Qe2 Be6 11.Rd1 Qe7 12.Nc3 Rd8 13.Be3 Rxd1+ 14.Rxd1 Nf6 15.Qb5 Kf7 16.Qxb7 Ne5 17.f4 Neg4 18.Bxa7 Rd8 19.Rf1 Bc4 20.Ra1 c5 21.Qxe7+ Kxe7 22.h3 Nh6 23.Bxc5+ Kf7 24.g4 Nd7 25.Rd1 Ke8 26.Bd4 g6 27.Nd5 Bxd5 28.exd5 Nf7 29.Re1+ Kf8 30.c4 Nd6 31.c5 Nb5 32.Bf2 Nf6 33.a4 Na7 34.Bh4 Kf7 35.d6 Nd5 36.Bxd8 Black resigned, Wall,B - Guest626645, PlayChess.com, 2020) 8. Qxd4 Qf6 9.Qc5+ Qd6 10.Qxd6+ cxd6 11.f4 Nf7 12.b3 Nb6 13.Ba3 Kf7 14.Bxd6 Nf6 15.Nc3 Re8 16.Rae1 a5 17.e5 Nfd5 18.Ne4 h6 19.f5 a4 20.Bc5 axb3 21.Nd6+ Kf8 22.Nxc8+ Kg8 23.Nxb6 Nxb6 24.Bxb6  Rxa2 25.cxb3 Rb2 26.Re3 d6 27.Bd4 Rd2 28.Bc3 Rc2 29.e6 d5 30.Rd1 b5 31.Rxd5 Rc1+ 32.Kf2 Ra8 33.e7 Kf7 34.Rd8 Ra2+ 35.Kg3 Rg1 36.Rf8 checkmate, CasualGames4ever - Alanvarela10, lichess.org,  2020) 12.b3 Ke8 13.Bb2 Nf6 14.Nd2 Rg8 15.Rae1 Kd8 16.Nc4 d5 17.e5 Ne4 18.Ne3 b6 19.Nxd5 Bb7 20.c4 Nc5 21.f5 Nd3 22.e6 dxe6 23.fxe6 Nd6 24.Ba3 Nxe1 25.Bxd6 Nd3 26.Nc7 Rc8 27.Rf7 Nc5 28.Rd7+ Nxd7 29.e7 checkmate, CasualGames4ever - Alanvarela10, 3 0 blitz, lichess.org, 2020.

6...dxc6 7.Nc3 Nf6 8.d3 Bg4 9.f3 Be6 

Here we have the classic Jerome Gambit imbalance: Black has an extra piece, White has 2 extra pawns. 

Black's capture 6...dxc6 was designed to slow down White's possible d2-d4, but, as the game develops, the move becomes possible. Also, the capture turns White's e-pawn into a protected passer, which may be telling, much later in the game.  

10.Ne2 Kf7 11.d4 Bb4+ 12.c3 Ba5 13.b4 Bb6 

It is still a battle of pieces vs pawns, and Black's 2 Bishops look valuable, but the defender is lacking the usual counter-stroke, ...d7-d5.

14.O-O Bc4 15.Rf2 h5 16.e5 Ne4 

A strange oversight - in a 3 0 blitz game, however.

17.fxe4+ Ke6 18.Nf4+ Kd7 19.Ng6 Qe8 

Choosing to give up the exchange, rather than play the stultified 19...Rh7.

20.Nxh8 Qxh8 

Hoping to build a Kingside attack, anyhow.

21.Bg5 Rf8 22.Rxf8 Qxf8 23.Qxh5 Bd3 

Things are getting a litte sloppy, perhaps an indication of the impact of the clock, this being a 3 0 game.

24.Qg6 

Strong enough, although sharp-eyed Readers may have spotted 24.Qg4+ leading to 24...Qf5 (ouch) 25.Qxf5+ Ke8 26.e6 Bxd4+ (what else?) 27.cxd4 Bc4 28.Qf7 checkmate.

24...a5 25.b5 

Okay, but there was also the march of the terrible "Jerome pawn": 25.e6+ Kc8 26.e7. 

25...cxb5 26.Rd1 Bc2 27.Rd2 Ba4 28.Rf2 c5 

A slip, but he was already facing a forced checkmate, so trying to clear the a7-g1 diagonal for his Bishop was as good as anything.

29.Rxf8 cxd4 30.Qxg7+ 

White has figured out his winning line, and that is enough. Readers, without the clock ticking, may want to find some alternatives.

30...Kc6 31.Rf6+ Kc5 32.Qxb7 dxc3 33.Qxb6+ Kb4 34.Qd4+ Ka3 35.Rf3 Kxa2 36.Qxc3 b4 37.Qd2+ Kb1 38.Rf1+ Bd1 39.Rxd1 checkmate