Jerome Gambit: History in Play

My first win with the Jerome Gambit, in the second round of the "Italian Game Classic" tournament at Chess.com, was a bit of a journey through the opening's history.

An unfortunate slip by my opponent allowed me a tactical shot that brought the game to an early conclusion.

perrypawnpusher - PDX84
Italian Game Classic, Chess.com, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 

Black courageously thinks of holding onto both sacrificed pieces. The compter chess analysis at Chess.com, after the game, identified the move as "best".

7.Qf5+

Alonzo Wheeler Jerome first suggested this move in the April 4, 1874 issue of the Dubuque Chess Journal. He also played 7.f4 and 7.O-O in correspondence games against S.A. Charles, and suggested 7.b4 "for analysis"; this was covered in the October, 1881 issue of Brentano's Chess Monthly.

A check of The Database shows 507 games with 7.Qf5+, with White scoring 48%, as opposed to 517 games with 7.f4, with White scoring 61%. There are no games with 7.b4.

7...Kd6 8.f4 Qf6 9.fxe5+ Qxe5 10.Qf3 

Not 10.Qxe5+ this time. That move has given me mixed results, and a loss most recently: perrypawnpusher - djdave28, Italian Game Tournament, Chess.com, 2014, (1-0, 22); perrypawnpusher - djdave28, Italian Game Tournament, Chess.com 2015, (1-0, 32); and perrypawnpusher - Altotemmi, Giuoco Piano Tournament, Chess.com, 2016, (0-1, 51). 

The Queen exchange is at least as old as Jerome, A - Jaeger, D, correspondence, 1878 (0-1, 68).

10...Nf6 

This move makes a lot of sense.

Jerome faced 10...Ne7 in a correspondence game against Jaeger in 1878 (0-1, 68).

 Lowe,E - Cudmore,D, correspondence, 1881, continued 10...b5 (½-½, 48).

Keeble,J - Cubitt,J, Norwich 1886, continued 10...c6 (1-0, 17).

11.d3 Ke7 

Black dodges the crudest of threats - 12.Bf4, pinning his Queen to his King. The idea is at least as old as Vazquez - Giraudy, Mexico, 1876 (remove White's Queen Rook) 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.Qf5+ Kd6 8.d4 Bxd4 9.c3 Bb6 10.f4 Qf6 11.fxe5+ Qxe5 12.Bf4 Qxf4 13.Qxf4+ Ke7 14.Rf1 Nh6 15.Qe5+ Kd8 16.Qxg7 Re8 17.Qg5+ Re7 18.Rf8 checkmate. Still, I've scored points from this "Optical Illusion" variation of the Jerome Gambit - see "Optical Illusion (1)", "Optical Illusion (2)" and "Disdainful Defender Defense".

Instead, 11...Kc6 was seen in Jerome, A - Colburn, correspondence 1879 (0-1, 34) and Jerome, A - Charles, S.A., correspondence, 1881 (unfinished).

12.Nc3 Bb4 

Pinning the White Knight to keep it off of d5.

Instead:

12...g5 was seen in Jerome, A - Shinkman, W, Iowa, 1874 (0-1, 21);

12...d6 was seen in Jerome, A - Brownson, O, Iowa, 1875 (1-0, 43);

12...c6 was seen in Jerome, A - Amateur, off hand game, 1876 (1-0, 20); and

12...d5 was seen in Jerome, A - Pane, M, correspondence, 1878 (1-0, 41).

13.Bd2

I was amused to see that I had played 13.O-O here, years ago, in perrypawnpusher - PREMK, blitz, FICS, 2005. The idea was that 13...Bxc3 14.bxc3 Qxc3 15.Qg3!? would give White good play for the sacrificed pawn.

13...Rf8 14.O-O d6 

Instead, in the post mortem, Komodo 10 recommended the brutal 14...Bd6, with the idea of forcing exchanges to eliminate White's attacking chances and highlight Black's piece-for-a-pawn advantage, e.g. 15.g3 c6 16.Bf4 Bc5+ 17.Kg2 Qh5 18.Na4 Qxf3+ 19.Rxf3 d6 20.Nxc5 dxc5 21.Raf1 Bg4 22.R3f2 Be6 

15.Nd5+ Black resigned

White will recover his sacrificed piece. He will be a pawn up, with better development and King safety. Black decided not to play on.

Jerome Gambit: Winning Ugly is Still Better Than Losing Ugly (Part 1)

Whew.

I just finished another Jerome Gambit game in the third round of the Giuoco Piano Thematic tournament at Chess.com, It was not pretty at all. You could say that I was losing - up until my opponent resigned. Of course, that is the "objective" evaluation of the Jerome, anyhow.

Yeah.

perrypawnpusher - IlToscano
Giuoco Piano Thematic, Chess.com, 2017

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.Qf5+ Kd6 8.f4 Qf6 

This defense is solid and good. It also avoids the complexities of 8...Qh4+, which I faced in perrypawnpusher - constipatedguru, blitz, FICS, 2017 (1-0, 20).

9.fxe5+ Qxe5 10.Qf3 

Staying away from 10.Qxe5+ which has given me mixed results, and a loss most recently: perrypawnpusher - djdave28, Italian Game Tournament, Chess.com, 2014, (1-0, 22); perrypawnpusher - djdave28, Italian Game Tournament, Chess.com 2015, (1-0, 32); and perrypawnpusher - Altotemmi, Giuoco Piano Tournament, Chess.com, 2016, (0-1, 51) 

10...Nf6 

Easily an improvement over 10...Ke7, which I faced in perrypawnpusher - gtomlinson, blitz, FICS, 2007 (1-0, 28) and 10...h6, which I faced in perrypawnpusher - paulpee, blitz, FICS, 2012 (1-0, 71).

11.d3 

About the same as 11.Nc3 as in perrypawnpusher - Dogyou, blitz, FICS, 2009 (1-0, 21). 

11...Kc6 

Black wishes to avoid the embarassment of getting his Queen pinned to his King - a trick that might work in blitz (see below) but this game was played at 3 days per move.

Or Black could play 11...Ke7 as in perrypawnpusher - PREMK, blitz, FICS, 2005, (1-0, 14); perrypawnpusher - karleinkarl, blitz, FICS, 2012 (0-1, 16);  and perrypawnpusher - vz721, Italian Game thematic, Chess.com, 2013 (1-0, 29); 

Or 11...Rf8 as in perrypawnpusher - BronxBoyII, blitz, FICS, 2009 (1-0, 18); perrypawnpusher - udofink, blitz, FICS, 2010 (1-0, 13);  perrypawnpusher - mconst, blitz, FICS,  2010 (1-0, 42); and perrypawnpusher - recreation, blitz, FICS, 2011 (1-0, 13);  

Or 11...Bb4+ as in perrypawnpusher - ViennaMike, blitz, FICS, 2009 (1-0, 19); 

Or 11...Re8 as in perrypawnpusher - Estebang, blitz, FICS, 2009 (1-0, 28) 

Or 11...Bd4 as in perrypawnpusher - Rossgil, blitz, FICS, 2009 (1-0, 26) 

12.c3 Bb6 13.Bf4 Qh5 14.Nd2 

I was not pleased to see the Queens leave the board, but I didn't have a better idea.

14...Qxf3 15.Nxf3 d6 

I added all of the game links above to show that I was supposed to be familiar with this line, and therefore supposed to know what I was doing against IlToscano. Yet, he has done very well, and the one pawn that I have for my sacrificed Bishop is clearly inadequate compensation.

I decided that I should again do what far better players than me have done in similar Jerome Gambit situations - abandon the "attack at all costs" idea, and let my opponent, who has the advantage, do the attacking. If he was not going to slip up when defending, perhaps he might err when atacking? Psychology is always a part of Jerome play.

[to be continued]

Jerome Gambit: One More Mystery Game

While I am still a bit surprised that I overlooked posting one Jerome Gambit loss from my ongoing Chess.com tournament (see the previous "Jerome Gambit: Very Serious Business") the fact that I also did not share the following game is less of a mystery: I got outplayed in a line that I really don't have a fix for. If an opponent in the tournament wanted to look up the game, that was one thing; but I was not ready to share my gloom and doom (and ideas) on this blog, as a "suggestion" of what to play. (As I have written before, I share a whole lot, but  not everything here.)

perrypawnpusher - Altotemmi
Giuoco Piano Thematic Tournament
Chess.com, 2016

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6. Qh5+Ke6 

7.Qf5+ Kd6 8.f4 Qf6 9.fxe5+ Qxe5 10.Qxe5+

I have scored 11 -1 with the alternative 10.Qf3. Alonzo Wheeler Jerome was  3 - 2 with one incomplete game. 

10...Kxe5

11.b4 Bd4 

11...Bb6 was seen in perrypawnpusher - djdave28, Chess.com Italian Game Tournament, 2014 (1-0, 22).

12.c3 Bb6 13.d4+ Ke6 

Prudent. The risks of 13...Kxe4 were shown in perrypawnpusher - djdave28, Italian Game tourney, Chess.com, 2015 (1-0, 32).

White will have to work hard to make something of his position, or he will find himself missing the power of his Queen.

As the game went, I was outplayed by my opponent.

14.O-O Nf6 15.Nd2 d6 16.Bb2 Bd7 17.Rae1 Be8 

18.e5 dxe5 19.Rxe5+ Kd7 20.Rfe1 Rd8 21.Nc4 Bg6 22.Nxb6+ axb6 23.Re7+ Kc8 24.Rxg7 Rd7 25.Ree7 Rxe7 26.Rxe7 Re8 27.Rxe8+ Nxe8 

White has two pawns for his sacrificed piece, and perhaps that might be enough to split the point against a weaker opponent, or in a blitz game; but not in this game.

28.Kf2 Kd7 29.Ke3 Ke6 30.c4 Nd6 31.d5+ Kd7 32.Kd4 Nf5+ 33.Ke5 Ne3 34.Kd4 Nxg2 

35.c5

Instead, Stockfish 7 after the game recommended 35.Bc1 Bb1 36.a4 Nh4 37.c5 Nf5+ 38.Ke5 bxc5 39.bxc5 Ne7 40.Bg5 Ba2 41.Bxe7 Kxe7 42.a5 Bc4 43.Kd4 Bf1 44.Ke5 Kd7 45.Kd4 Be2 46.Ke3 Bc4 47.Kd4 Bf1 48.Ke5 Ba6 49.Kd4 Ke7 50.Ke5 Be2 and although Black still has the advantage, it does not look like either player is making any progress.

35...b5 36.Bc1 Nh4 37.Bf4 Nf5+ 38.Ke5 Ne7 39.a3 Bf7 

40.d6

After the game Stockfish 7 took issue with this, suggesting a line that is not quite so much better for Black: 40.c6+ bxc6 41.dxc6+ Kxc6 42.Ke4 Bg6+ 43.Ke5 Nc8 44.Kd4 Nd6 45.Bg5 Bb1 46.Bd8 Ne4 47.Ke3 Kd7 48.Bh4 Nd6 49.Kd2 Kc6 50.Bd8 Nf7 51.Bh4 Bg6 52.Kc3 Kd5 53.Kb3 Nd6 54.Kc3 Bf7 55.Bd8 c6

40...cxd6+ 41.cxd6 Nd5 42.Bd2 Nb6 43.Bc1 Nc4+ 44.Ke4 Kxd6 45.Kd4 Kc6 46.Ke4 Bg6+ 47.Kd4 Nd6 48.Bf4 Nc4 49.Bc1 h5 50.h4 b6 51.Kc3 Kd5 White resigned

Whew! I am reminded of the silly phrase "trampled to death by a herd of turtles." Nice work by my opponent!

Do I Share Everything? No.

I have shared the good and the bad about the Jerome Gambit on this blog - winning games and losing games, helpful analysis and scary analysis.

But I haven't shared everything.

Here is an example from last year, drawn from the post "Jerome pawns -Clowning Around" where I was discussing preparations for my first-round game against djdave28 in the current Chess.com Italian Game tournament

After my discouraging loss with the Jerome Gambit in my previous Chess.comItalian Game tournament (perrypawnpusher - Buddy_Thompson), I knew that I had to cook up something new, or risk facing a future opponent who just "looked the refutation up" (and not even on this blog, mind you, but in my recent games on Chess.com).
I was happy that I did do the research, too, because in my third Jerome Gambit in my current tourney, my opponent went straight for the same line (leaving out the superfluous Queen check).

I won that encounter, and two rounds later I found myself facing the same opponent. Would he repeat the line - even though I had been victorious? Of course he would!

perrypawnpusher - djdave28
Italian Game tournament, Round 3
Chess.com, 2015

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.Qf5+

Here is a relevant computer game: 7.f4 Qf6 8.Qxe5+ Qxe5 9.fxe5 Kxe5 10.b4 Bd4 11.c3 Bb6 12.d3 d5 13.Rf1 dxe4 14.Bf4+ Ke6 15.dxe4 Nf6 16.Nd2 Bd7 17.a4 a5 18.b5 Rhf8 19.O-O-O Rac8 20.h4 Bc5 21.Nb3 Bb6 22.c4 Nh5 23.g3 Nxf4 24.Rxf4 Ke7 25.Rxf8 Rxf8 26.Rd3 c5 27.e5 Rf1+ 28.Kb2 Re1 29.Rd6 Bc7 30.Nxc5 Bc8 31.Rd5 Rxe5 32.h5 b6 33.Na6 Rxd5 34.Nxc7 Rxh5 35.Nd5+ Kd6 36.Nxb6 Be6 37.Kc3 Kc5 38.Na8 Rh3 39.Nc7 Rxg3+ 40.Kd2 Bxc4 41.Na6+ Kd6 42.Nb8 Ra3 43.Nc6 Rxa4 44.Nd4 Kc5 45.Nf3 Kd5 46.b6 Ra3 47.Nh4 Ke4 48.b7 Rb3 49.Ng2 Rxb7 50.Ne3 Bd3 51.Nd1 Kd4 52.Ke1 a4 53.Kf2 a3 54.Kg3 Be2 White resigned,  Matacz CCT7 - Imp 0.74b, CCT7, 2005.

7...Kd6 8.f4 Qf6 9.fxe5+ Qxe5 10.Qxe5+ Kxe5 11.b4 Bd4

Previously, my opponent had backed up his Bishop, before making this strike: 11... Bb6 12.Bb2+ Bd4 (12...Kxe4? 13.Bxg7 Black resigned, axykk - bromby, FICS, 2011) 13.c3 Bb6 14.d4+ Kxe4 15.O-O Nf6 16.Nd2+ Kd3 17.Nf3 d6 18.Rad1+ Kc4 19.Nd2+ Kb5 20.a4+ Kxa4 21.c4 Kxb4 22.Rf3 Black resigned, perrypawnpusher - djdave28, Chess.com Italian Game Tournament, Round 1, 2014. 

12.c3 Bb6 13.d4+ Kxe4 14.O-O 

Here is another interesting computer game: 14.Nd2+ Kf5 15.O-O+ Ke6 16.a4 a5 17.b5 Nf6 18.Ba3 Re8 19.Rae1+ Kf7 20.Rxe8 Kxe8 21.Re1+ Kf7 22.Nc4 Nd5 23.Rf1+ Ke6 24.Re1+ Kf6 25.Rf1+ Kg5 26.Bc1+ Kh4 27.Rf5 Nxc3 28. Be3 Bxd4 29.Bxd4 Ne2+ 30.Kf2 Nxd4 31.Rf4+ Kg5 32.Rxd4 b6 33.Ne3 Ra7 34.Rc4 Kf6 35.Nd5+ Ke5 36.Nxb6 cxb6 37.Rxc8 d5 38.Rh8 h6 39.Rb8 Rf7+ 40.Ke3 Rf6 41.h3 h5 42.Rh8 Rh6 43.Re8+ Re6 44.Rc8 Kd6+ 45.Kd3 h4 46.Rc2 Re4 47.Rc6+ Ke5 48.Rxb6 Rxa4 49.Ra6 Ra2 50.b6 Rxg2 51.Rxa5 Rb2 52.Ra6 g5 53.Kc3 Rb5 54.Kc2 g4 55.hxg4 Kf4 56.Ra4+ Kg5 57.Rd4 h3 58.Rd2 Rxb6 59.Rxd5+ Kh4 60.Rd2 Rf6 61.g5 Kxg5 62.Rd5+Kg4 63.Rd1 h2 64.Kb3 Rf4 65.Ka2 Rf3 66.Rc1 Kh3 67.Rc8 Kg2 68.Rg8+ Rg3 69.Rh8 h1=Q 70.Rxh1 Kxh1 71.Kb2 Kg2 72.Kc2 Kf1 73.Kd2 Rh3 74.Kc1 Ke2 75.Kc2 Rd3 White resigned, Spike1.2 - Fritz 6.0, USA, 2006. 

14...Kd5 15.Rf8 

This move is the result of research into my previous game with my opponent. You won't find it in my notes to that match, however.

What does it do? Not very much. It has some stifling effect on Black's development, but it conjures up something a Bizarro Nimzovich might have commented upon: It's strong because it is so weak! It does so much by doing so little!

It actually emboldens Black's King to stay around the center of action, and return a piece for a couple of pawns.

15...a5 16.b5 Kc4 17.Na3+ Kxc3 18.Rf3+ Kxd4 
19.Bb2+ Kd5+ 20.Kf1 Bd4 21.Rd1 Nf6

Black has two extra pawns, but his King looks pretty shaky.

Does White have an attack, or is he reduced to pawn-grabbing?

22.Bxd4 Ke6 23. Bxf6 gxf6 24.Re1+ Kf7 25.Rc3

This definitely looks like prospecting for pawns, and perhaps Black should let White have his way with 25...Kg6 26.Rxc7 d5. The theme of "Black's light-squared Bishop staying at home, undeveloped and blocking his Rook" would slowly be addressed by the defender.

25...c6 26.Nc4 

Headed toward the "hole" at d6.

26...d5 27.Nd6+ Kg6 28.Rg3+

Suddenly the idea of invading the 7th rank suggests itself to White, along with taking advantage of the unfortunate Bishop at c8 and the pawn it defends at b7..

28....Kh5 29.b6 

Another "do nothing" move. There was no way that I was going to exchange this pawn off and open lines for Black's Bishop. If my opponent's connected and passed c- and d-pawns were going to be the death of me - then, so be it.

29...Rb8 30.Re7 Bg4 31.h3 Bc8 32.Rgg7 

Black resigned

It might seem a bit early for the second player to give up the ghost, but his position certainly is tied up.

Anybody want a (couple of) piece(s) of me?

In the previous post I bemoaned the fact that all of my games with White in first round of the most recent ongoing Chess.com Italian Game tournament were against opponents who did not want to allow the Jerome Gambit.

Now the third round of the earlier Chess.com Italian Game tournament has started, and I am in an interesting group along with Rebecca_Wiebe , who still has 200 rating points on me, but who, last round, against me chose the Hungarian Defense (3...Be7) - and gave up her only half-point (she is 13-0-1 so far in the tournament) - and djdave28 (who is 10-4-0) who lost a Jerome Gambit to me in round one.

djdave28 (I've got 100 points on him - how did that happen?) has already signaled that he is ready for a rematch by playing 3...Bc5. We will see about Rebecca_Wiebe. (No. Another Hungarian Defense.)

Almost There

Four games remain to be finished in the current Chess.com Italian Game thematic tournament. From seven groups of five players each, fifteen will advance, likely to form three subsequent groups of five.

With a 6-2 record, I am sitting on the top of Group #6. djdave28 will advance along with me, joining Hywel2, deckers1066, beftahk (top rated at 2036, having scored 8-0 in the first round), alexmoore421, Reinlynx, nissk, ashutoschess (lowest rated at 1279, but having scored 8-0 in the first round), ChessTitan249, Zeddicus16, Rebecca_Wiebe, ermeel, MatthiasBerger; and either smitty67 or mathiaserdhal.

More Jerome Gambits are promised!

"Jerome pawns" - Clowning Around

After my discouraging loss with the Jerome Gambit in my previous Chess.com Italian Game tournament (perrypawnpusher - Buddy_Thompson), I knew that I had to cook up something new, or risk facing a future opponent who just "looked the refutation up" (and not even on this blog, mind you, but in my recent games on Chess.com).

I was happy that I did do the research, too, because in my third Jerome Gambit in my current tourney, my opponent went straight for the same line (leaving out the superfluous Queen check).

As often happens, the white "Jerome pawns" held a starring, if comic, role in the game, supporting me while mistreating the Black King horribly.

perrypawnpusher - djdave28
Chess.com Italian game tournament, 2014

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.Qf5+ Kd6 8.f4 Qf6 9.fxe5+ Qxe5 

10.Qxe5+

This was my idea, to "surrender" to Black's plan. Exchanging Queens isn't much worse than leaving them on. I found only 30 examples of this line in The Database, including a few played by "Blackburne", Louis Morin and UNPREDICTABLE.

If we go back to the perrypawnpusher - Buddy_Thompson, Chess.com, 2014 game, however, with 8...Qh4+ 9.g3 Qf6 thrown into the move order, there are two relevant precendents: NN - Kapil Gain, Internet, 2004 (1-0, 56) and perrypawnpusher - Kevin the Fruitbat, Jerome Gambit Thematic, ChessWorld.net, 2008.(1-0, 38). Both are discussed at "Jerome Gambit Tournament: Chapter XIII".

Likewise, if we use the opening approach 7.f4 (instead of 7.Qf5+) Qf6 8.Qxe5+ Qxe5 9.fxe5 Kxe5 we reach the same position as in the game, only a move earlier. There are 13 examples of this in The Database, but only one follows our main line (see below).

10...Kxe5 11.b4

This is the reason I went into the line - it looks hokey, and the next few moves by White don't suggest that I know what I am doing, either. (It's only showed up twice - three times if we count transpositions - before in The Database.)

I was pretty sure that I had discussed the line in an email with Stefan Bücker, editor of Kaissiber, years ago; but I have not been able to find our correspondence on the topic.

11...Bb6

The alternative, 11...Bd4, was seen in two games:

Spike1.2 - Fritz 6.0, USA 2006:  12.c3 Bb6 13.d4+ Kxe4 14.Nd2+ Kf5 15.0-0+ Ke6 16.a4 a5 17.b5 Nf6 18.Ba3 Re8 19.Rae1+ Kf7 20.Rxe8 Kxe8 21.Re1+ Kf7 22.Nc4 Nd5 23.Rf1+ Ke6 24.Re1+ Kf6 25.Rf1+ Kg5 26.Bc1+ Kh4 27.Rf5 Nxc3 28.Be3 Bxd4 29.Bxd4 Ne2+ 30.Kf2 Nxd4 31.Rf4+ Kg5 32.Rxd4 b6 33.Ne3 Ra7 34.Rc4 Kf6 35.Nd5+ Ke5 36.Nxb6 cxb6 37.Rxc8 d5 38.Rh8 h6 39.Rb8 Rf7+ 40.Ke3 Rf6 41.h3 h5 42.Rh8 Rh6 43.Re8+ Re6 44.Rc8 Kd6+ 45.Kd3 h4 46.Rc2 Re4 47.Rc6+ Ke5 48.Rxb6 Rxa4 49.Ra6 Ra2 50.b6 Rxg2 51.Rxa5 Rb2 52.Ra6 g5 53.Kc3 Rb5 54.Kc2 g4 55.hxg4 Kf4 56.Ra4+ Kg5 57.Rd4 h3 58.Rd2 Rxb6 59.Rxd5+ Kh4 60.Rd2 Rf6 61.g5 Kxg5 62.Rd5+ Kg4 63.Rd1 h2 64.Kb3 Rf4 65.Ka2 Rf3 66.Rc1 Kh3 67.Rc8 Kg2 68.Rg8+ Rg3 69.Rh8 h1Q 70.Rxh1 Kxh1 71.Kb2 Kg2 72.Kc2 Kf1 73.Kd2 Rh3 74.Kc1 Ke2 75.Kc2 Rd3 White resigned;

and in

Matacz CCT7 - Imp 0.74b, 2005: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 Qf6 8.Qxe5+ Qxe5 9.fxe5 Kxe5 10.b4 Bd4 11.c3 Bb6 12.d3 d5 13.Rf1 dxe4 14.Bf4+ Ke6 15.dxe4 Nf6 16.Nd2 Bd7 17.a4 a5 18.b5 Rhf8 19.0-0-0 Rac8 20.h4 Bc5 21.Nb3 Bb6 22.c4 Nh5 23.g3 Nxf4 24.Rxf4 Ke7 25.Rxf8 Rxf8 26.Rd3 c5 27.e5 Rf1+ 28.Kb2 Re1 29.Rd6 Bc7 30.Nxc5 Bc8 31.Rd5 Rxe5 32.h5 b6 33.Na6 Rxd5 34.Nxc7 Rxh5 35.Nd5+ Kd6 36.Nxb6 Be6 37.Kc3 Kc5 38.Na8 Rh3 39.Nc7 Rxg3+ 40.Kd2 Bxc4 41.Na6+ Kd6 42.Nb8 Ra3 43.Nc6 Rxa4 44.Nd4 Kc5 45.Nf3 Kd5 46.b6 Ra3 47.Nh4 Ke4 48.b7 Rb3 49.Ng2 Rxb7 50.Ne3 Bd3 51.Nd1 Kd4 52.Ke1 a4 53.Kf2 a3 54.Kg3 Be2 White resigned

12.Bb2+ Bd4

The "idea" behind the line appeared in axykk - bromby, FICS, 2011: 12...Kxe4 13.Bxg7 Black resigned.

13.c3 Bb6 14.d4+ 

14...Kxe4

I wouldn't be surprised to find that taking the pawn isn't the strongest move (see Spike1.2 - Fritz 6.0, USA, 2006, above). It reminds me of the Blackburne Shilling Jerome Gambit line, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+ Kxf7 5.Nxe5+ Ke6 6.c3 Kxe5 7.cxd4+ where Black has to think "homeward bound" for his King, or risk dangerous play. More prudent in our game seems 14...Ke6.

I suspect that my opponent saw the position as an endgame, in which case his King should be safe; while I saw it as a Queenless middlegame, where I still had tactical intentions. 

15.0-0 Nf6 16.Nd2+ Kd3 17.Nf3 d6 18.Rad1+ Kc4 19.Nd2+ 

I was hoping for 19...Kd3, when I was going to plan 20.Nf3+ and offer a draw. I know that's a bold thing to do, down a piece, but I thought Black's King might be feeling homesick.

19...Kb5

Again, a surprise. I thought that after 19...Kd5 I could play 20.c4+ and 21.c5 and win the piece back - hoping that my lead in development would compensate for my lack of pawns.

20.a4+

Played automatically, remembering a comment that Bill Wall once made to me, that certain moves just have to be played, not even thought over. Here, it either works, or White is doomed, anyway - I'm a piece down, and if Black's King escapes, I got nothin'... 

To my chagrin, when this game was over and I shared it will Bill, he suggested 20.c4+ instead.

20...Kxa4 21.c4 

The "Jerome pawns" do special duty, hemming in the King.

21...Kxb4 

This move, however, leads to a pie in the face. After the game, both Bill and Houdini suggested 21...d5.

22.Rf3 Black resigned

The King cannot escape checkmate.