In the previous post (see "Jerome Gambit: Move That Knight!") I shared a couple of outrageous ways (other than sacrificing it at e5) for White to move his King's Knight out of the way in the Jerome Gambit so that his Queen can enter the fray.
Of course, one "solution" is not to put the Knight there in the first place. Consider the Abrahams Jerome Gambit, 1.e4 e5 2.Bc4 Bc5 3.Bxf7+!?
I consulted The Database, and learned that it has one 1.e4 e5 2.Bc4 Bc5 3.Bxf7+ game by Bill Wall - always a good openings experimenter to check out - played on the internet in 2001. (Even that far back, he played a couple of games with 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+.)
It turns out that at the same time Bill was extending his experiments a bit, as the following game shows.
Wall, Bill - Quianna
Internet, 2001
1.e4 e5 2.Bc4 Bc5 3.b4
This move is at least as old as the MacDonnell - La Bourdonnais, London match,1834.
3...Bxb4 4.c3 Bc5 5.d4 exd4 6.Bxf7+
Here we have what might be called the "Evans-ish Abrahams Jerome Gambit", as it is not quite an Evans Gambit without Nf3/Nc6. The game follows MacDonnell - Boden, London, 1869, for 5 moves, but the first game example that I have of the move 6 Bishop sacrifice is from 2000. (Light analysis of the sacrifice is at least as old as Jaenisch's Analyse Nouvelle des ouvertures in the 1840s.)
6...Kxf7 7.Qh5+ g6 8.Qxc5
NM Eric Schiller, in notes to a game (Denker - Shayne, Rochester, New York, 1945) at Chessgames.com, said this position "looks very good for White". (It's probably about even - but for White to reach equality in 8 moves in any kind of Jerome Gambit has got to be very good, right?)
8...dxc3
The kind of pawn-grabbing that is usually punished.
Instead, Stockfish 9 suggests 8...Qe7 - as seen in Delanoy - Kamenecki, Cannes, France, 2000 (1-0, 38) - with an even game. However, Michael Goeller, a Bishop's Opening expert, gives that move a "?!" and prefers 8...Nf6 - no games in The Database - which he gives a "!", with an even game. There doesn't seem to be anything wrong with 8...Nc6 or 8...d6, either.
9.Nxc3 d6
10.Qd5+
Psychological warfare. Bill has used a similar Queen check in the Jerome Gambit proper to question Black: Do you want to play ...Be6 and give up the b-pawn?
10...Kf8
Black replies Not quite, and keeps his King off of the a1-h8 diagonal, where one of his Rooks lives, and where White's remaining Bishop might take up residence. Yet, 10...Kg7 might have been a better move.
11.Nf3 c6
Kicking the Queen, instead of focusing on development.
White has ample compensation for his sacrificed pawn (development, Black's unsafe King), and his opponent's next move, a nervous oversight, ends the game.
12.Qd4 c5 13.Qxh8 Black resigned
In 1877 in Australia, H. Charlick played a correspondence game combining the Evans Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4) with the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+): see "The Evans Jerome Gambit". A similar idea has appeared in the Bishop's Opening, 1.e4 e5 2.Bc4 Bc5.
Delanoy - KameneckiCannes, France (2), 2000
1.e4 e5 2.Bc4 Bc5 3.b4
According to Bishop's Opening expert Michael Goeller,
This move is a good method of transposing to the Evans Gambit since it allows for some independent possibilities, some of which are quite favorable for White. If you like to play the Evans Gambit, this seems the most flexible way to do so..
3...Bxb4
Accepting the gambit by 3....Bxb4 challenges White to prove compensation. The resulting positions are very similar to the Evans Gambit and White probably does best to transpose to the Evans in most lines. There is one significant advantage for White, however, in offering the gambit pawn before developing the Knight to f3. In the line 4.c3 Ba5, which has proven one of the more thorny in Evans Gambit theory, White can play 5.f4!? instead of 4.Nf3 Nc6. - Goeller
4.c3
Instead, 4.f4 exf4 is the McDonnell Double Gambit, about which there is an interesting article by IM Nikolai Minev. 5.Nf3 Ne7 6.Ng5 Ng6 7.Qh5 Qf6 8.c3 h6 9.Bxf7+ Ke7 10.Bxg6 Qxg5 11.Qxg5+ hxg5 12.cxb4 d6 13.Nc3 c6 14.d4 Kf6 15.Bf5 Bxf5 16.exf5 Kxf5 17.0-0 Kg6 18.g3 fxg3 19.hxg3 d5 20.Bd2 Nd7 21.Rae1 Rh3 22.Kg2 g4 23.Ne2 Rhh8 24.Nf4+ Kh7 25.Re7 Nf6 26.Ne6 Nh5 27.Rff7 Rhe8 28.Nf4 Nxf4+ 29.gxf4 Rxe7 30.Rxe7 a5 31.a3 axb4 32.Bxb4 b5 33.Kg3 Kg6 34.Kxg4 Black resigned, was Brownson - Jerome, Iowa 1875.
4...Bc5 
5.d4 exd4 6.Bxf7+ Kxf7
Or 6...Kf8 7.Bxg8 Kxg8 8.cxd4 Bb4+ 9.Nd2 Qe7 10.Qb3+ Kf8 11.Qf3+ Ke8 12.Ne2 Rf8 13.Qe3 d5 14.e5 c5 15.a3 cxd4 16.Nxd4 Bc5 17.N2b3 Bb6 18.0-0 Nc6 19.Bb2 Bf5 20.Qc3 Nxd4 21.Nxd4 Rc8 22.Qb3 Rc4 23.Nb5 Bc2 24.Nd6+ Qxd6 25.Qxc4 dxc4 26.exd6 Bd3 27.Bxg7 Rf7 28.Rae1+ Kd7 29.Be5 Bxf1 30.Rxf1 Bc5 31.a4 a6 32.a5 Kc6 33.Rd1 Bxf2+ 34.Kh1 Rd7 35.g4 Bc5 36.h4 Bxd6 37.Bc3 Be7 38.Rxd7 Kxd7 39.h5 Ke6 40.Kg2 Bf6 41.Bb4 c3 42.g5 c2 43.Bd2 Bb2 White resigned, Schuermans - Verwimp, Belgium 2003
7.Qh5+ g6 8.Qxc5 Qe7
Goeller gives 8...Nf6 as equal.
9.Qd5+ Qe6 10.Qxe6+ dxe6 11.cxd4 Nf6 12.Nc3 Rd8 13.Nf3 Nc6
From here on, White consistently outplays Black in an interesting Queenless middlegame, and an instructive endgame.
14.Be3 a6 15.0-0 Kg7 16.Rac1 h6 17.Rfd1 Ne7 18.h3 c6
White has more space and better development, while Black plans his defensive formation.
19.Ne5 g5 20.f3 Ng6 21.Na4 Nxe5 22.dxe5 Rxd1+ 23.Rxd1 Nd7 24.Nb6 Nxb6 25.Bxb6
By allowing Black to double his pawns on the e-file, White has found time to put a serious cramp into his opponent's game.
25...a5 26.Rd8 a4 27.Kf2 Ra6 28.Bc5 Ra8 29.Kg3 b5
A bid for breathing space, as Black is being strangled on the Queenside.
30.Kg4 Kg6 31.Rg8+ Kf7 32.Rf8+ Kg7 33.Kh5 Bb7
Finally!
Of course, White has no interest in exchanging Rooks.
Black's next move quickens the end, but 34...Re8 would only postpone the loss, not evade it.
34.Rf6 Rd8 35.Rxe6 Bc8 36.Rxc6 Bd7 37.Rc7 Kf7 38.Kxh6 Ke6 Black resigned
