Go On, Take The Money And Run

Black does well defending against the Jerome Gambit in the following game, until he becomes careless, and all of his gains disappear quickly.

Wall, Bill - Guest2905635
PlayChess.com, 2015

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+ Kxf7

The Italian Four Knights Jerome Gambit, a transition from 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nc3 Nf6.

6.d3 Re8

Or:

6...Ng4 7.Ng5+ Ke8 (7...Kg8 as in Wall,B - Richard123, Chess.com, 2010 [1-0, 10]) 8.Qxg4 h6 9.Qh5+ Ke7 10.Qf7+ Kd6 11.Nb5 checkmate, Wall,B - 321, InstantChess, 2015; or

6...Bb4 7.O-O Bxc3 8.Ng5+ Kg8 9.bxc3 h6 10.Nf3 d5 11.exd5 Qxd5 12.Be3 Bg4 13.c4 Qd8 14.h3 Be6 15.Rb1 b6 16.Re1 e4 17.dxe4 Bxc4 18.e5 Nd7 19.Qd2 Bxa2 20.Rbd1 Be6 21.Qc3
Ne7 22.Nd4 Bd5 23.Nf5 Nxf5 24.Rxd5 Ne7 25.Rd4 c5 26.Qc4+ Kh7 27.Qd3+Kg8 28.Rxd7 Qf8 29.Ra1 Nf5 30.Qd5+ Kh7 31.Rf7 Qg8 32.e6 Black resigned, Wall,B - Boris, SparkChess.com, 2012; or

6... Bxf2+ as in Wall,B - Igidius, PlayChess.com, 2015 (1-0, 15); or

6... Rf8 as in Wall,B - BarAbbas, PlayChess.com, 2012 (1-0, 45) 

7.O-O g6

Instead, 7...Nd4 was seen in Wall,B - Albulus, PlayChess.com, 2015 (1-0, 44).

8.Nd5 Nxd5 9.exd5 Ne7 10.Nxe5+ Kg8 11.Bg5 d6 12.Nf3 Qd7

Black has unpinned his Knight and plans to grab the advanced d-pawn. It looks like a simple idea.

13.d4 Bb6 14.Re1 Nxd5 15.c4 Ne7

There.

16.c5 dxc5 17.Qb3+ Kf8 18.Bh6 checkmate