Wednesday, November 20, 2019

Jerome Gambit: A Way Out of the Woods (Part 1)


My second win with the Jerome Gambit, in the second round of the "Italian Game Classic" tournament at Chess.com, was a scary one. My opponent played aggressively and had some very interesting ideas. At one point, I decided to trust the "Jerome pawns" and threw them forward - backed up by my Rooks. It wasn't the "best" play, but it was enough to shake my opponent and give me a way out of the woods. I gathered in the full point.

The game is fun to play over, but do not overlook the notes - especially if you plan on playing (or defending against) the Jerome Gambit.


perrypawnpusher - FedeMamut
Italian Game Classic, Chess.com 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 




After the game was over, I ran it through the computer at Chess.com. I was delighted to see that it marked "4.Bxf7+" as a "book" move. I decided to rely on the analysis for my notes here.

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ 

The Chess.com computer commented that this move is "excellent", although 6.d4 is "best".

For the record, The Database has 4,442 games with 6.Qh5+ (White scores 56%) and 2,024 games with 6.d4 (White scores 55%). So, 6.Qh5+ is twice as popular as 6.d4, but both moves score similarly.

6...Kf8 

The Jerome Defense to the Jerome Gambit, played successfully by Alonzo Wheeler Jerome in two correspondence games against Daniel Jaeger in 1880.

Again, the computer commented that this move is "excellent", although 6...Ke6 is "best".

The Database has 665 games with 6...Kf8, with White scoring 50%, while it has 1,102 games with 6...Ke6, with White scoring 53%. Black has chosen "the road less followed", but one that has been better for the defenders.

7.Qxe5 d6 

Once more, the computer opined that while 7...d6 was "excellent", 7...d5 was "best". I was beginning to think that when it came to the end of the game, it would suggest that FedeMamut came in "second place", while I came in "next to last".

Still, The Database has 412 games with 7...d6, with White scoring 48%. Of note, there are only 2 games with 7...d5, and Black won both of them.

8.Qg3 Qe7 

The computer said this move was an "inaccuracy", while 8...Nf6 was "best". Still, it rated Black as clearly better.

The Database has only 8 games with 8...Qe7, with White scoring 63%.

9.Nc3

Likewise, an "inaccuracy", while 9.d3 would be "best". At this point, I decided to get Stockfish 10's opinion. It agreed with the Chess.com computer. Figures.

For the record, I played 9.d3 in perrypawnpusher - frencheng, 10 5 blitz, FICS, 2010 (1-0, 19)

9...Nf6

Interestingly enough, the Chess.com computer rated this move as "good", but preferred the novelty, 9...h5, as "best". Keep that in mind.

10.d3 c6 11.O-O h5 

The Chess.com computer rated this move as an "inaccuracy", preferring 11...Kf7 as "best". It was looking at Black's King safety, and was recommending that he castle-by-hand.

I like the aggressive pawn move - it threatens White's King's safety, makes active use of Black's Rook, and still leaves Black better. Moreover, in future move suggestions, the computer suggested the weakening h2-h4 for White, an additional benefit of Black's "inaccuracy".



[to be continued]

Monday, November 18, 2019

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.

Saturday, November 16, 2019

Jerome Gambit: Descent Into Rubble

The latest game from Cliff Hardy is a wild affair, concluding with a mad dash to the finish line - er, time control. 

In a 1-minute, no increment, bullet game, you can win, even if your opponent has a forced checkmate - if his flag falls. Just another reason for an opponent to hate the Jerome Gambit.  

I have added some diagrams and a comment or two, in blue; otherwise, the notes are by Cliff. 

Here is a bullet Jerome Gambit game I played today, which most certainly has several errors in it!

Cliff Hardy (2400) - NN (2391)
1 0, Lichess, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 



4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ g6 



7.Qxe5 Qe7 8.Qf4+

I successfully remembered that taking the rook here is inferior (I think!).

Black is playing Whistler's Defense with 6...g6 and 7...Qe7. Taking the Rook at h8 is complicated, but "theoretically" dangerous for White, although The Database shows a score of over 50% in about 50 games. Check out the earlier post, "Bop!" - Rick

8...Kg7 9.d3 Nf6 10.0-0 Rf8 

Black has effectively castled-by-hand. Given enough time, he will continue to figure things out. Unfortunately, he will not have enough time. - Rick

11.Nc3 d6?!


Stockfish prefers the hard-to-see 11...d5! -++ e.g. 12.exd5?/e5? Ng4! 13.Qg5 Bxf2+.

12.Qh4 Bd4? =+

Missing White's threat - 12...h5 13.Na4 -++ would still have been strong for Black.

13.Bh6+ Kg8 14.Bxf8 Qxf8 15.Kh1 Be6?! =


The perennial inaccuracy for Black in the Jerome Gambit - this bishop move tends to run headlong into White's pawn push f2-f4-f5. Better would have been 15...Qg7 16. f4 Bd7, with a slight advantage for Black. 

16.f4 Re8 17.Nd1? =+

17.Ne2 would have been better, though I had missed that 17...Bxb2? could then have been met by 18.Rab1.

17...Ng4 18.h3 Ne3 19.Nxe3 Bxe3 20.Rf3 Bd4 



21.c3 Bg7 22.Raf1 Qe7??


22...Qf6 23.Qf2 =+

23.Qg3??

Missing the typical Jerome Gambit tactic of utilising the f-pawn with 23.Qxe7 Rxe7 24.f5 gxf5 25.exf5 Bxa2 26.f6! ++-, forking the rook and bishop.

23...Bxa2 24.f5 Bf7??

The Jerome Gambit f-pawn strikes again! Blockading it with 24...gxf5 25.exf5 Qf6 would have left Black with a clear advantage.

25.f6 Bxf6 26.Rxf6 Be6 

27.Qf4 Kg7 28.Qf2 Bg8?

The interference tactic 28...Bf5! would have been better here, though after 29.Rxf5 gxf5 30.exf5 Rf8 31.Qxa7, White would still have had a winning advantage.

29.Rf3 Qe5 30.Qxa7 Qb5 

31.Qd4+ Kh6 32.Qf6 Re5 



33.Qh4+ Kg7 34.Qf6+ Kh6 35.Rf4 Rh5? 



36.Rh4?

Black made the mistake of allowing White to mate in 2 moves with 36.Qf8+ Kg5 37.Rg4 (which White obviously missed!), though Black's position was lost in any case.

 36...Rxh4 37.Qf8+?

The game now descends into rubble. With White having 2.4 seconds left on the clock and Black having double that (exactly 4.8 seconds left), we both started to throw down any move we could think of! Clearly, 37.Qxh4+ would have been a much better move to play (though even after 37.Qf8+?, White still has a winning position).

37...Kg5 38.Qf3 Rg4?? 39.Qg3?? Rxg3 40.Kh2 Qe5 41.Rf5+ and White cheekily won on time.


Thursday, November 14, 2019

Jerome Gambit: Across the Board

The following Jerome Gambit game features play alternating different sides of the board. It is a long journey for White - but he comes out ahead, in the end, when Black can not keep up (the story of many defenders). 

Wall, Bill - GuestYKQX
FICS, 2019

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




4...Kxf7 5.Nxe5+ Nxe5 6.d4 Bxd4 7.Qxd4 d6 



Bill has had this position about 80 times.

8.Nc3 Nf6 9.Bg5 Re8 10.O-O-O Kg8 



Black has castled-by-hand, Kingside. White's King has castled Queenside. This dynamic will play out.

11.f4 Nc6 12.Qa4 

Her Majesty has ideas about how she can influence the enemy King, from afar. Also, there may be a b-pawn available, soon. According to The Database, this is a new move.

12...Qe7 13.Nd5 Qf7 14.Bxf6 gxf6 15.Qb3 Be6 



The eternal question arises in the Jerome Gambit as well: Does one who grabs the b-pawn sleep in the gutter? Bill decides to find out.

16.Qxb7 Bxd5 17.exd5 Ne7 18.Rhe1 Rec8 



White has 2 pawns for his sacrificed piece, but he still has a lot of work to do.

19.Qb3 Nf5 20.Qd3 Ng7 21.g4 



Back to the Kingside.

21...Re8 22.Rg1 Re7 23.h4 Rae8 24.h5 Re3 



Black's dynamic counterplay keeps him better - for now.

25.Qa6 f5 26.h6 fxg4

Opening lines against your own King can not be wise.

27.Rxg4 Qf8 



A slip. Time?

28.Rxg7+ Kh8 29.Qxa7 Qxf4 30.Kb1 Re1 31.Rg1 Rxd1+ 32.Rxd1 Qxh6 33.a4 



The a-pawn advances. It has an advantage over Black's h-pawn, which is blocked, for now.

Also, Black's King is vulnerable. Ultimately, that makes the difference.

33...Rc8 34.a5 Qh5 35.Qd4+ Kg8 36.Rg1+ Kf8 37.Qg7+ Ke8 38.Qg8+ Kd7 39.Rg7+ Black resigned



Tuesday, November 12, 2019

Jerome Gambit: Knight Errant

The Jerome Gambit is most known for the Bishop sacrificed at f7, and the active role the Queen plays. In the following game, however, a Knight stars. At first it seems to be making a transparent threat, but it quickly overwhelms the defender's game.

Wall, Bill - Anonymous
lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 




4...Kxf7 5.Nxe5+ Nxe5 6.d4 Bxd4 7.Qxd4 d6 



8.O-O Nf6 9.Bf4 Qe7 10. f3 Rf8 11. Nc3 Kg8 



Black has castled-by-hand. He has the advantage in this middlegame, but he must make good use of his opportunities.

12.Rad1 Nc6 13.Qd2 a6 14.Rfe1 Qf7 15.b3 Ne7 16.Ne2 Ng6 17.Be3 Nd7 18.c4 Nde5 

White has developed quickly and has strong pressure on the pawn at d6. He will be able to take over the game, if his opponent slips. He starts with the "Jerome pawns".

19.f4 Nc6 20.f5 Nge5 21.Nf4 Ng4 22.Nd5 Nxe3 23.Rxe3 Ne5



24.Rg3 Kh8 25.c5 dxc5 26.Qc3 Nd7 27.Nxc7 



White's Knight threatens the Rook at a8 - and even more. Black should counter with 27...Nf6!?, with his own threat to win the exchange (after ...Nxe4), but he underestimates the danger and replies routinely.

27...Rb8 28.Ne6

The Knight threatens the Rook at f8, the pawn at g7 - and even more.

28...Rg8 29.Ng5 Qe7 30.Nxh7 Re8 



Of course, if 30...Kxh7, then 31.Rh3+ Qh4 32.Rxh4 checkmate

31.Ng5 Nf8 32.Qf3 Kg8 33.Qh5 Bxf5 34.exf5 Black resigned



White's pressure on the Kingside will win material, as Black defends, first, attacks on his King, and then, deals with the advancing "Jerome pawns".