Sunday, October 10, 2021

Jerome Gambit: Facing Up to 4.Bxf7+ in the Two Knights (Part 2)



As mentioned in the previous post, the earliest example that I have found of the Two Knights "impatient Jerome Gambit" line, 1.e4 e5 2.Bc4 Nf6 3.Nf3 Nc6 4.Bxf7+, is the following game. It is just the start of the investigation, as it raises many more questions than it answers.


Draper, Dr - Child, AW.

Belfast - Dublin team correspondence match-2 1891-2


My source for this game is Dr. Timothy Harding's very reliable UltraCorr 3A (2010) collection of correspondence chess games (an updated version is due in early 2022).

However, examining Dr. Harding's thesis,‘Battle at long range’: correspondence chess in Britain and Ireland, 1824-1914, a social and cultural history, I immediately ran into difficulties.

Appendix III, titled "Matches between clubs" ("This appendix lists the known correspondence matches played between U.K. clubs, or between clubs and individuals, between 1824 and 1914"), does not list a Belfast - Dublin correspondence match for 1891.

[In 1891, Ireland was still part of the U.K.]

On top of that, Appendix IX, titled "A-Z of Chess People", does not list an AW Child or a Dr. Draper.

Clearly, I have more research ahead of me.

1.e4 e5 2.Bc4 Nf6 3.Nf3 Nc6 4.Bxf7+ 

4...Kxf7 5.Qe2 

Placing the Queen on e2 as a strategic and tactical idea must have been "in the air" at the time the game was played. I have looked at 4.Qe2 in earlier posts.

White has a different idea. To put it into context, see "No Way A GM Plays the Jerome Gambit! (Part 1)". 
There is also the historical perspective reflected in "Proto-Jerome Gambits? (Part 3)". 
The earliest example that I have seen with this move is Pollock, W.H.K. - Vernon, J.E., Bath vs Bristol match, 1883 (1/2 - 1/2, 29). 
It was also played in Gunsberg - Burn6th American Chess Congress, 1889 (1/2-1/2, 27) and Bird - Chigorin, 6th American Chess Congress, 1889 (0-1, 53).

In the current game, White's Queen puts pressure on Black's e-pawn, while readying the simple threat, 5...Bc5? 6.Qc4+.

5...d5

Black hits the center right away. He envisions trouble for White, who has his Queen and King on the same file (we have recently warned about this).

6.exd5 Nxd5 

7.O-O 

Prudent. If White had originally planned 7.Nxe5+ Nx5 8.Qxe5, perhaps he now realized that after 8...Qe7 the Queens will be exchanged, and he will not have much of an attack. As in the regular Jerome Gambit, White would have two pawns for his sacrificed piece, but that would not be a lot of comfort in a quiet game - especially an open one, where his opponent has the two Bishops. 

7...Bd6 8.d4 Re8 9.Ng5+

Optimistically putting his hopes on the chance of a Kingside checkmate.

9...Kg8 10.Qh5 Nf6 11.Qf7+ Kh8 12.Qc4 Qe7 


Black's King is secure, and now the Knight checks at f7 are dealt with.

White's tactical threats would probably amount to something in blitz, but, remember, this is a correspondence game. 

13.Be3 Be6 14.Qa4 

Allowing a tactical shot.

14...exd4 15.Bxd4 Bxh2+ 16.Kh1 

Avoiding 16.Kxh2 Ng4+ 17.Kg1 Qxg5, but it does not matter. 

16...Bd5 17.f3 

Blunting the power of Black's light-squared Bishop, but the danger comes from elsewhere.

17...Nh5 18.Kxh2 Qxg5 19.Bf2 Nf4 20.Bg3 Qh6+ White resigned

Checkmate comes after the very attractive 21.Kg1 Ne2+ 22.Kf2 Qe3+ 23.Ke1 Nc3.

 

[to be continued]

Saturday, October 9, 2021

Jerome Gambit: Facing Up to 4.Bxf7+ in the Two Knights (Part 1)

 


I started this blog over 13 years ago with a focus on the Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+. The backbone of The Database is a collection of all of the Jerome games that I could gather from the online site FICS, since its beginning in 2009.

As I collected additional games and analysis to add to my posts, I began to include information on lines which included the development of all 4 Knights, or which saw an early ...h6 - or which saw a combination of both.

I added 1.e4 e5 2.Bc4 Bc5 3.Bxf7+, because at least one authority labeled it the Jerome Gambit.

It seemed natural to add 1.e4 e5 2.Nf3 Nc6 3.Bc4 Na5 4.Bxf7+ and 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+, because of Jerome-ish themes, too.

As readers began to send me games, there were many with Bxf7+ played as reasonably (or unreasonably) as possible, e.g. 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.Bxf7+.

Although I have not gone back to the early days of FICS to search for these additional lines, I have added as many games as I can to The Database, which now contains over 69,000 games.

The other day, I noticed that I had over 500 examples of the Two Knights variation, 1.e4 d5 2.Nf3 Nc6 3.Bc4 Nf6 4.Bxf7+.


Although I had early experience facing this line - 
leobrazer - perrypawnpusher, blitz 3 0, FICS, 2009 (0-1, 48) and yorgos - perrypawnpusher, blitz 3 0 FICS, 2009 (1-0, 48) - in my blog analysis I mostly avoided it - see "Jerome Gambit vs Two Knights Defense (Part 1, 2, 3 and 4)". 

My preference in facing the Two Knights Defense was to play 4.Nc3 and hope for a transition to the Jerome Gambit Four Knights with 4...Bc5 5.Bxf7+. When faced with 4...Nxe4 in this line, I sometimes tried 5.Bxf7+ or 5.0-0 (with hopes for transition).

But I continued to be sent, and to find, Two Knights games with 4.Bxf7+. Witness the recent "Jerome Gambit: Chess Adventures of GM Hambleton (Part 1)"

The earliest game that I have found with 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Bxf7+ comes from a correspondence tournament played in 1891-92. We will look at that game tomorrow.


[to be continued]

Friday, October 8, 2021

Jerome Gambit: Another Push For the Nudge

In the 6...Ng6 variation of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) I have always been an advocate of the Queen check "nudge" 7.Qd5+ before picking up Black's Bishop at c5.

The move gives Black one more thing to think about (Where does my King go?) and drives the enemy monarch to the back rank, where it can interfere with his Rook placement.

The following game is an example of the troubles that can arise, otherwise.


Astral1119 - JJayquan

10 0 blitz, lichess.org, 2021


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6 7.Qxc5


I checked with The Database, and found that this direct capture scores 49% for White, while the "nudge" check, first, 7.Qd5+, scores 67%. That's something to think about.

Also, Stockfish 14 shows a clear preference for 7.Qd5+, about 3/4 of a pawn.

7... d6 8.Qe3 Nf6 


A couple of posts ago, I referred to this as "A normal Jerome Gambit position" - with the King on e8, that is.

9.Nc3 

This is a regular developing move, designed both to protect the e -pawn and prevent 9...d5. However, it fails in the latter case, as Black can play his d-pawn forward, as seen in the earlier game RevvedUp - Crafty 19.19, 2 12 blitz, 2006 (0-1, 14).

In fact, the more modest 9.d3, and the more direct 9.f3 can also be met by 9...d5.

The problem is that White's Queen is on the same file as his King - the one that Black can move his Rook to. As I have cautioned before, "beware the e-file".

9...Re8 10. d3 d5 11.f3 


White has reinforced his e-pawn, but in the process he has overlooked something.

11...d4 12.Qd2 dxc3 13.Qxc3 Kg8 

Instead, after 13...Qd6, White eventually lost on time in Astral1119 - EliArturKarL, lichess.org, 2021, (0-1, 48) 

14.O-O  White resigned

White is down two pieces for three pawns.


Thursday, October 7, 2021

Jerome Gambit: Normal Fails



One thing that makes the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) attractive for club blitz play is that many defensive moves and plans seem normal, and, therfore, reasonable; but they eventually turn out to be flawed.

The following short game is a good example. 


Astral1119 - BenTheMaster00

5 3 blitz, lichess.org, 2021


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

4...Kxf7 5.Nxe5+ Ke8 

Why cooperate with White's attack, by capturing the Knight?

Indeed, this is a good response for Black, but not if he only follows normal moves.

6.Qh5+ 

The most aggressive response.

Best, but complicated, is 6.Nxc6 Qh4!?, a line that has 0 examples in The Database.

6...g6 7.Nxg6 Qf6 

This attack on White's King would work, if there were enough time. There isn't.

Instead, Black could attack the enemy Queen right away with 7...Nf6. Then, after 8.Qxc5 hxg6 9.f3 he would have an edge.

In fact, since Black is going to lose his Bishop anyhow, he could improve with 7...Bxf2+ first, followed by 8.Kxf2 Nf6, with White's Knight at g6 later to be taken. It is interesting to consult The Database, where the Bishop sacrifice scored only 17% for Black in a dozen games, despite leading to a position that is "objectively" better.

8.Nxh8+ Kd8 9.Qxc5 Qxh8 10.Qf8 checkmate


Nice.


Wednesday, October 6, 2021

Jerome Gambit: Busting the Pawn Center

The Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) often features a large and aggressive pawn center that White uses to show compensation for his sacrificed piece. 

In the following game, Black succeeds in dismantling the enemy pawn center, only to continue his aggression one move too much.


EdnaDrown - hechQ

10 0 blitz, Chess.com, 2021 


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6

7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 Nf6

A normal Jerome Gambit position: there are 330 examples in The Database. White defends the e-pawn and works on the Queenside.

10.f3 Kf7 11.O-O Re8 12.Qb3+ Be6 13.c4 b6 14.d4 c6 

White's pawn center looks like it is almost enough...

15.f4 

Black hits back against this. White might have done better with 15.d5.

15...b5 16.Na3 bxc4 17.Nxc4 Nxe4 


Suddenly, Black decided to grab the "free" e-pawn - a risky move with his Bishop still on e6.

18.f5 Bxc4 

This almost works.

19.fxg6+  Kxg6 20.Qxc4 


The battle on the Queenside has settled down, White's pawn center has disappeared, and Black can keep things relatively balanced now by protecting his c-pawn with 20...Qd7.

Instead, he continues by setting up a disclosed check - although he overlooks something.

20...Qb6 21.Qf7 checkmate




Tuesday, October 5, 2021

Jerome Gambit: Thank You

 


Every month, Bill Wall sends me his new Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) games. Often they are hard-fought battles that extend the theory of the opening. Sometimes they are miniatures - often because of the assistance of the defender. (In those cases, I am sure that Bill says "Thank you".)

The following game is an example of how in the Jerome Gambit one oversight on defense can quickly turn the game into a "1 - 0" result.


Wall, Bill - Kayck

internet, 2021

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 


The Database shows 961 games with this position for Bill, with him scoring 94%. Those are pretty solid numbers.

(Older skeptics who are familiar with both chess and basketball might say that It's not the shoes.)

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 


So far, so good, for Black.

7.f4 g6

The defender follows the advice that if a piece of yours is attacked, you don't have to move the piece, you can attack a piece of a higher value. In this particular case, however, the advice does not apply.

The Database has 56 games with this position, with White scoring 74%. More to the point, it has 4 games played by Bill with this position, with him scoring 100%.

Instead, 7...d6 leads to the "annoying defense" which is a tougher nut for White to crack.

8.Qxe5+ Kf7 9.Qxh8 Black resigned


Black is down the exchange and a couple of pawns.

Monday, October 4, 2021

Jerome Gambit: Alert

 


I have a Google alert set up to catch instances of the use of "Jerome Gambit" on the internet.

Often I receive an alert that references this blog. No surprise.

However, occasionally I discover something new and different.

Today I was directed to something that was simply irresistable: