Jerome Gambit: So Normal

I like to play over Bill Wall's Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) games. They are exciting, and they often make the opening seem so normal.

Wall, Bill - Anonymous
lichess.org, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.d4 Bb4+ 

One way to deal with the pawn fork.

7.c3 Bxc3+ 8.bxc3 

The alternative is 8.Nxc3, and Bill has played that, too.

8...Nc6 

The game has a bit of a hypermodern feel to it, Black's piece vs White's pawns.

9.O-O 

White is happy with his pawn center, and leaves it in place, for now. A wild alternative was 9.d5 Ne5 10.f4 Nc4 11.0-0 Qe7 12.Qd4 Nd6 13.e5 Nf5 14.Qf7, which Komodo 10 sees as still in Black's favor, and which FM Stefan Bücker would probably enjoy.

9...d6 10.Be3 Nf6 11.Qb3+ Kf8 

Black hasn't quite castled-by-hand, as his King blocks in his Rook.

12.e5 dxe5 13.dxe5 Nxe5 

Instead, the Knight on f6 needed to retreat.

14.Bc5+ Ke8 15.Re1 Nfd7 

The "best" Black has is to surrender both Knights with 15...Qd5 16.Qxd5 Nxd5 17.Rxe5+ Kf7 18.Rxd5.

16.Qe6+ Black resigned

Jerome Gambit: The Face Palm Variation

I need to spend a moment or two on a Jerome Gambit variation that has been bothering me for almost 20 years. (See "Another Way to Sacrifice the Knight" and "PSA 2.0" for a couple of rants.) A disreputable line in a disreputable opening, it keeps showing up in games. I would like to call it the Face Palm Variation.

SPOKLECHAT - anzali
5 0 blitz, FICS, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

 4...Kxf7 5.Ng5+

This line does not have a name that I am aware of. It is based on a tactical shot that may be clever, but not convincing. (I gave a warning about a decade ago in the post "Public Service Announcment".)

The Database has 568 games with the line, with White scoring 23%. The earliest games that I have (6 losses) feature TiFoZi, at FICS, in 1999. I will try to message him there, but, according to the site, the last time he visited was October 22, 2001.

I can understand that a Jerome Gambit player might try the line on a lark, especially at blitz or lightning time controls; I noticed Jerome regulars such as COMTIBoy, DragonTail, drumme, HauntedKnight, JKELSEY, majorminor, MyGameUMove, Petasluk, snthor, sTpny, superpippo, Teterow, thmavz, ZahariSokolov, and yorgos, have given it a try.

5...Qxg5 

Of course.

The Database shows that this capture occurred 415 times, that is, in 73% of the games. (White scored 16%.)

6.d4 

The idea: the pawn attacks Black's Bishop, while uncovering an attack on Black's Queen.

One of the reasons that White fares so poorly in this line is that White played this thematic move in less than half of the games where Black had grabbed the Knight. But, why offer the piece unless you had this surprise in store? Another way of offering "Jerome Gambit odds"? Inattention?

One downside of the whole idea is that Stockfish 11 now rates Black's advantage to be about the equivalent of two Rooks and a piece...

6...Bxd4 

Out of 195 games, 16 times Black fell for this "trap". That is not very often (8% of the time after 6.d4; 3% of the games where White plays 5.Ng5+), although, when it did happen, White scored 69%.

In 147 of the games, Black played 6...Qxg2, and White still scored 11%, which is kind of amazing.

For the record, 6...Qxg2 crushes. After 7.Rf1 (best) Qxe4+ (capturing on d4 is fine, too) 8.Be3 (8.Qe2 does not provide any relief: 8...Qxe2+ 9.Kxe2 Nxd4+ 10.Kd1 d6 11.Be3 Bf5 11.Na3 Nf6 is gruesome) Nxd4 9.Nc3 Bb4 10.Qd3 (Stockfish 10 prefers castling-by-hand with 10.Kd2 and 11.Kc1, but, really) Bxc3+ 11.Qxc3 Nxc2+ and that should be convincing enough.

But, in the game we are looking at, Black fell down the well...

7.Bxg5 h6 

Black has 2 pieces for his Queen, and might as well try his luck with 7...Bxb2, going after the enemy Rook. Things can get a little complicated after 8.Na3 Nd4, but 9.0-0 Bxa3 10.f4 puts the heat back on the Black King.

After 7...Bxb2, there is also 8.Qh5+ g6 (8...Kf8 9.Na3 Bxa3 [9...Bxa1 10.Nb5] 10.Qf3+ Ke8 11.Qxa3) 9.Qf3+ Kg7 10.Nc3 Bxa1 11.Nd5 and Black will not be able to hold onto his Rook and two piece compensation for his Queen, e.g. 11...d6 12.Bf6+ Nxf7 13.Qxf6+Kg8 14.Nxc7 and White is not only threatening to win the Rook, he threatens to move the Knight to e8 to aid in checkmate.

Again, back to the game.

8.Qf3+ Nf6 9.Bxf6 gxf6 10.Qh5+ Kg7 

11.Nd2 Bxb2 12.Rb1 Bd4 13.Nf3 Bb6 

Black has secured most of his pieces, but he has left one at risk - his King.   

14.Nh4 d6 

Defense is hopeless. For example, 14...Ne7, 15.Rb3 with the idea of moving over to g3.

15.Qg6+ Kf8 16.Qxf6+ Kg8 17.Ng6 Black resigned

The Rook at h8, and possibly the one at a8 as well, will soon be leaving the board.

Hats off to SPOKLECHAT, who took great risks, but also took advantage of his opportunities.

Jerome Gambit: Folie a Deux (Part 3)

[continued from previous post]

perrypawnpusher - Sp1derR1c0
Italian Game Classic, Chess.com, 2020

24...Rg7 25.Kf2 

After the game, Komodo 10 also liked 25.Rf1 and 25.Re3, as well as the two other King moves that unpin White's g-pawn, 25.Kh1 and 25.Kf1. I made my choice based on the hope that, once I had won the d6 pawn, a centralized King would help escort my connected, passed "Jerome pawns".

25...Rf8 26.Nd5 Bg4 

27.Ne3

Afterwards, Komodo 10 suggested that my King further advance, with 27.Ke3. It then saw as most practical that the Bishop retreat and reposition, with 27...Bc8 28.Rd2 b5 29.Red1 Bb7 and things would still be relatively balanced. If I had to do it all over again, that would be my choice.

27...Bxf3 

Unexpected, but logical. Black returns his extra piece for a couple of pawns.

28.gxf3 Nxf3 29.Rh1 

Suddenly, all of Black's pieces are focused on White's King!

29...Nd4+

Best might have been 29...Nd2+ 30.Ke2 Nxe4 31.Rdf1 Re8 although most of the storm would have passed.

30.Ke1 

Probably leading to an equal game would have been 30.Nf5 Nxf5+ 31.exf5 Rxf5+ 32.Ke3, but I wanted to keep the Knight defender around, as it was doing a pretty good job.

30...Nf3+ 31.Ke2 

Here, I though to myself, So, he had a draw in hand, to back up his sacrificial attack...

31...Nd4+ 

Played too quickly, perhaps with the same idea in mind: Chase the King back to e1, check him again from f3: draw by repetition. But, in my musings I had overlooked the fact that this was not a discovered check, as before, so things have changed.

Instead, the Knight needed to go to g5, when White would still have a lot of work to do to convert his extra pawn into a win.

32.Rxd4 Black resigned

Lucky, me, this time.

I have one more Jerome Gambit, this round, against LittlePrince, who plays 3...Nf6, but who allowed a transposition after 4.Nc3 Bc5 5.Bxf7+. I have only played the Jerome a few times against players of LittlePrince's rating - and have not scored well (especially if you do not count the 4-move win on time) - but, here we go!