If necessity is the mother of invention, as it is said, then certainly frustration must be the grandmother of invention.
In the following game I wanted nothing more than a normal Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) or something similar, like the Semi-Italian Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.0-0 Bc5 5.Bxf7+) or the Blackburne Shilling Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+).
What I got, instead, was an odd and frustrating transposition to Damiano's Defense (1.e4 e5 2.Nf3 f6). I'd played against the line a number of times before, but this time I decided to try something new (to me).
perrypawnpusher - emoh
blitz FICS, 2009
1.e4 e5 2.Nf3 Nc6 3.Bc4 f6
This position can arise out of the Damiano Defense with 1.e4 e5 2.Nf3 f6 3.Bc4 Nc6. White has the usual advantage of better development and a safer King.
4.d4 Nxd4
In a few earlier games I had dispatched my opponents quickly:
4...Nh6 5.dxe5 fxe5 6.Bxh6 gxh6 7.Nxe5 Nxe5 8.Qh5+ Nf7 9.Qxf7 checkmate, perrypawnpusher - nenettelatour, FICS, 2009;
4...Na5 5.Nxe5 Nxc4 6.Nxc4 Qe7 7.Nc3 Qb4 8.Ne3 d6 9.Ned5 Qa5 10.b4 Black resigned, perrypawnpusher - santor, FICS, 2009;
4...exd4 5.Nxd4 Nxd4 6.Qxd4 b6 (6...c5 7.Qd5 Ne7 8.Qf7 checkmate, perrypawnpusher - cgoodwin, FICS, 2008) 7.Qd5 c6 8.Qf7 checkmate, perrypawnpusher - eddyfactor, FICS, 2009.
Not all of the games went that smoothly, however, as my opponents put up more resistance, and some of the games actually threatened to be boring:
4...d6 5.0–0 exd4 (5...Bg4 6.dxe5 (6.d5 Bxf3 7.Qxf3 Nd4 8.Qd1 a6 9.c3 Nb5 10.Bxb5+ axb5 11.Qd3 Qd7 12.Na3 c6 13.dxc6 bxc6 14.Rd1 Be7 15.Be3 Nh6 16.Bc5 Nf7 17.Nc2 0–0–0 18.Bb6 Rde8 19.a4 Qb7 20.a5 Nd8 21.a6 Qxb6 22.a7 Ne6 23.a8Q+ Kd7 24.Qa7+ Qxa7 25.Rxa7+ Nc7 26.Nb4 Rc8 27.Na6 Rhd8 28.Rxc7+ Rxc7 29.Nxc7 Kxc7 30.Ra1 Black resigned, perrypawnpusher - fiddlinggeorge, FICS, 2007) 6...fxe5 7.Nc3 Nd4 8.Be2 Nxe2+ 9.Qxe2 Nf6 10.Bg5 Be7 11.Bxf6 Bxf6 12.h3 Be6 13.Nd5 c6 14.Nxf6+ gxf6 15.Rad1 b5 16.Qd3 Ke7 17.c3 Bc4 White resigned, perrypawnpusher - rassmus, FICS, 2009) 6.Nxd4 Nge7 7.Nc3 Ne5 8.Bb3 b6 9.f4 N5g6 10.f5 Ne5 11.Qh5+ g6 12.fxg6 N7xg6 13.Nd5 Ba6 14.Nxf6+ Ke7 15.Nf5+ Kxf6 16.Bg5 checkmate, perrypawnpusher - TheWiking, FICS, 2009;
5...a6 6.Nc3 b5 7.Bxg8 Rxg8 8.Qh5+ g6 9.Qxh7 Rg7 10.Qh4 Nxd4 11.0–0 Nxc2 12.Rb1 f5 13.Qxd8+ Kxd8 14.exf5 gxf5 15.Bh6 Rg8 16.Bxf8 Rxf8 17.Rbc1 Nd4 18.Rfd1 c5 19.Nd5 Ne2+ White resigned, perrypawnpusher - mrau, FICS, 2008;
5...Na5 6.Bxg8 Rxg8 7.Qh5+ g6 8.Qxh7 Rg7 9.Qh4 g5 10.Qh5+ Ke7 11.Nf5+ Ke6 12.Nxg7+ Kd6 13.Nf5+ Ke6 14.Nc3 c6 15.0–0 b5 16.Be3 Bb7 17.Nd4+ Ke7 18.Nf5+ Ke6 19.Qg6 d5 20.Qg8+ Kd7 21.exd5 cxd5 22.Nxd5 Bxd5 23.Qxd5+ Kc7 24.Rfd1 Bd6 25.Qf7+ Kc6 26.Nxd6 Qh8 27.b4 Nc4 28.Nxc4 bxc4 29.a4 Qh6 30.Qxc4+ Kb7 31.b5 Rc8 32.Qe4+ Kb8 33.a5 Rh8 34.b6 Qxh2+ 35.Kf1 Qh1+ 36.Ke2 Qh5+ 37.f3 axb6 38.axb6 Qh2 39.Kf2 Qh4+ 40.Qxh4 gxh4 41.Kg1 Rh7 42.Kh2 Kb7 43.c4 Rh5 44.c5 Re5 45.Bg1 Re2 46.Rf1 h3 White forfeited on time, perrypawnpusher - shahss, FICS, 2007
Time for some creativity!
5.Nxe5 fxe5 6.Qh5+
Not quite a Jerome (you have to love that Bishop on c4), but almost as exciting.
6...Ke7
I don't have many games with the 5.Nxe5 line in my database, but the ones that I have suggest that 6...g6 is the correct move.
6...g6 7.Qxe5+ Qe7 (7...Ne6 8.Bxe6 dxe6 9.0-0 Nf6 10.Bg5 Bg7 11.Nc3 0-0 12.Rad1 Qe7 13.Nd5 Nxd5 14.Bxe7 Bxe5 15.Bxf8 Nf4 16.Rd8 Ne2+ 17.Kh1 b6 18.Bd6+ Kf7 19.Bxe5 Bb7 20.Rxa8 Bxa8 21.Re1 Bxe4 22.Rxe2 Bd5 23.b3 c5 24.c4 Bc6 25.Rd2 a6 26.Rd6 Bb7 27.Rd7+ Black resigned, attasantotjia - epprecht, net-chess, 2007) 8.Qxd4 Bg7 9.Qe3 (9.Qd5 c6 10.Qg5 Qxe4+ 11.Be2 Bf6 12.Qe3 Qxe3 13.fxe3 d5 14.c3 Ne7 15.0-0 0-0 16.Nd2 Bf5 17.Nf3 a6 18.Nd4 Bxd4 19.exd4 Rae8 20.Bh6 Rf7 21.Rae1 Nc8 22.b3 Rfe7 23.Kf2 Nd6 24.c4 Ne4+ 25.Kg1 Nc3 26.g4 Nxe2+ 27.Rxe2 Rxe2 28.gxf5 Rxa2 29.fxg6 hxg6 30.h4 Kh7 31.Bg5 Ree2 32.Rf7+ Kg8 33.Rf1 Rg2+ White resigned, gphillips - epprecht, net-chess, 2006) 9...Nf6 10.0-0 Nxe4 11.Kh1 c5 12.Re1 Black timed out, gdraper - erikmussche, net-chess, 2006.
7.Qxe5+
This move is already a bit too routine. Since White's dark-squared Bishop is immediately available to deliver a deadly check on g5, White should eliminate the one piece that can get in the way, the Knight, with 7.Bxg8. Black loses his Queen after the recapture 7...Rxg8 8.Bg5+, so he must try something like 7...Kd6 instead.
White then has the tricky 8.Na3, which is a good move to remember. If 8...Rxg8 then White plays 9.Qf7 with mate threats, picking up the Rook after 9...Ne6 (9...Rh8 10.Nc4+ Kc5 11.Qd5+ Kb4 12.c3+ Ka4 13.Qa5 checkmate) 10.Qxg8.
Also seen was 7.Qf7+, although it transposed to the 7.Qxe5+ line: 7...Kd6 8.Qd5+ Ke7 9.Qxe5+ Ne6 10.Bg5+ Nf6 11.Nc3 c6 12.0-0-0 d6 13.Qg3 Nxg5 14.Qxg5 h6 15.Qg6 Kd7 16.e5 Be7 17.exf6 Bxf6 18.Qf7+ Qe7 19.Rhe1 Qxf7 20.Bxf7 Rf8 21.Be6+ Kd8 22.Rxd6+ Kc7 23.Rd3 Bxe6 24.Rxe6 Rae8 25.Rxe8 Rxe8 26.Kd1 Rd8 27.Rxd8 Kxd8 28.Kd2 Bxc3+ 29.Kxc3 Kd7 30.Kd4 Kd6 31.f4 c5+ 32.Ke4 b6 33.c4 Ke6 34.f5+ Kd6 35.g4 a6 36.a4 a5 37.h4 Ke7 38.Ke5 Kd7 39.g5 hxg5 40.hxg5 Ke7 41.g6 Kd7 42.f6 gxf6+ 43.Kxf6 Ke8 44.g7 Black resigned, kode - epprecht, net-chess, 2007.
7...Ne6 8.Bg5+ Nf6
As you can see, the next time I play this line I'm going to have lots of new ideas to try out. In this game, however, I had only one pawn for my sacrificed piece, so I needed to make my lead in development count.
9.Nc3 h6 10.Nd5+ Kf7 11.Bxf6 gxf6 12.Qh5+
12...Kg7 13.Qg4+
More adventurous was 13.0-0-0, with compensation. The text gives White the option of a draw through repetition of position (checking the King), unless Black wants to risk more by varying.
13...Ng5
14.f4
Again, too routine, too much like the "real" Jerome Gambit. As White can castle Queenside, he should hit the Knight with his h-pawn.
14...d6
15.Qg3 c6 16.Ne3 Qa5+ 17.c3 Qb6
Black loosens up White's King's possible shelter. Still, next move White should 0-0-0.
18...hxg5 19.0-0 Qxb2
According to plan, but it leaves the King open to a sudden tactic.
20.Qf3
Instead, look at 20.Rab1 Qa3 21.e5.
analysis diagram
White blows up Black's King's shelter. Just a couple of possible variations: 21...dxe5 22.Rxf6 Kxf6 23.Rf1+Ke7 24.Qxe7+ or 21...Qc5 22.Rxf6 Qxe5 23.Rf7+ Kh6 24.Rbxb7.
20...Be7
21.Nf5+
This produces an even game, whereas tactics like in the previous analysis would give White a decent attack: 21.Rab1 Qa3 22.Be6 Qc5 23.Bxc8 b6 24.Bh3.
21...Kf8
A mistake in a complicated position.
22.Nxe7 Kxe7 23.Qxf6+ Kd7 24.Qxh8 Kc7
25.Rf7+ Kb6 26.Qd4+ Ka5 27.Rd1 Bg4
28.Bb3 Bxd1 29.Qb4+ Ka6 30.Bc4+
There goes the Queen.
30...b5 31.Qxb2 bxc4 32.Qa3+ Kb6 33.Qb4+ Ka6 34.Qb7+ Black resigned
It's always fun when the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) brings about a little magic. The following game starts off routine, moves to a middlegame that is 21st Century, and then finishes with a sparkle. I can overlook a number of blemishes along the way and appreciate the final position. 
Of course, part of the fun of playing the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) and related lines is that there is often a quick win (see "Eyeblink Chess: Crash" for the alternative) awaiting the attacker (with occasional help from the defender, of course).
If necessity is the mother of invention, as it is said, then certainly frustration must be the grandmother of invention.
