Showing posts with label Four Knights. Show all posts
Showing posts with label Four Knights. Show all posts

Tuesday, January 7, 2020

The Database: Updated

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I recently updated The Database with games from the Free Internet Chess Server, through the end of 2019. The 62,000 games therin represent the largest collection of Jerome Gambit and Jerome-ish openings that I know of.

In addition, because 90+% of the games come from online club play (wins, losses and draws), they are pretty representative of the practical outcome of certain moves or lines. Players can consult their favorite computer (Stockfish, Komodo, Houdini, Crafty, etc.) to get an "objective" assessment of play, and then they can dip into The Database and see how well the lines have fared in play.

There are 15,036 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+, the main line Jerome Gambit.

There are 2,715 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+, the Italian Four Knights Jerome Gambit.

There are 207 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.0-0 Bc5 5.Bxf7+ and 160 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.Nc3 Bc5 5.Bxf7+, both variants of the Semi-Italian Jerome Gambit.

There are 148 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.Nc3 Nf6 5.0-0 Bc5 6.Bxf7+, the Semi-Italian Four Knights Jerome Gambit.

There are 6,388 games with the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+, The Blackburne Shilling Jerome Gambit.

There are 2,470 games with the declination 1.e4 e5 2.Nf3 Nc6 3.Bc4 Na5.

There are 17,582 games with the moves 1.e4 e5 2.Bc4 Bc5 3.Bxf7+, the Abrahams Jerome Gambit.

That leaves about 17,500 miscellaneous games that are Jerome-related, primarily through an early Bxf7+. They are there both to give players ideas about the opening - an for entertainment purposes.

Sunday, January 5, 2020

Jerome Gambit: Don't Relax

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The following game is another example of Black defending well, only to relax too early - and feel the sharpness of White's attack.

angelcamina - tbena
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+ 



The Italian Four Knights Jerome Gambit.

5...Kxf7 6.Nxe5+ Nxe5 7.d4 Bxd4 8.Qxd4 d6 



9.O-O Bd7 10.f4 

One of the weapons in the Jerome Gambiteer's arsenal.

10...Nc6 11.Qc4+ Be6 12.Qe2 Re8 13.f5 

An annoying "Jerome pawn" move, another weapon.

13...Bc8 14.Qc4+ Kf8 



15.Bg5 

Ditto.

15...Ne5 16.Qb3 b6 17.Nd5 

And, again.

17...Bb7 



Black completes his development, and wonders "Have you got anything left?" White shows that he does.

18.Nxf6 gxf6 19.Bh6+ Ke7 20.Qe6 checkmate


Very pretty.

Friday, December 20, 2019

Jerome Gambit Seesaw

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The following Jerome Gambit includes an enjoyable "seesaw" (or "windmill") theme that sets this game apart from other 1-minute, no increment, wins for White. It must have been great fun for angelcamina.

angelcamina - ThiccFantano
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+ 



The Italian Four Knights Jerome Gambit. The Database shows that angelcamina is 23 - 0 - 1 with this line!

5...Kxf7 6.Nxe5+ Nxe5 7.d4 Ng6 8.dxc5 Re8 9.O-O 



9...Nxe4

Risky, but he gets away with it - this time.

10.Nxe4 Rxe4 11.Qd5+ 

This is White's idea, but it comes in a better form with 11.Qf3+.

11...Re6 12.f4 Kg8 

Stepping off of the hot f-file, but staying on the uncomfortable a2-g8 diagonal. Better was 12...Ne7.



13.f5 Qf6 14.fxe6 Qxe6 15.Qxe6+ dxe6 



White is up the exchange. There is now a temporary lull in the action, as both sides renew their development.

16.Bd2 Bd7 17.Bc3 Bc6 18.Rae1 Re8 19.b3 Nh4 20.Re3 Nxg2 



Highlighting Black's Bishop along the a8-h1 diagonal. It is soon to be upstaged.

21.Rg3 Nh4 22.Rxg7+ Kh8 23.Rxc7+ 



The fun begins.

It seems unfair to point out 23.Rg3+ e5 24.Bxe5+ Rxe5 25.Rf8#.

23...Kg8 24.Rg7+ Kh8 25.Rxb7+ 



The fun continues. See the above note.

25...Kg8 26.Rg7+ Kh8 27.Rxa7+ 



As above.

27...Kg8 28.Rg7+ Kh8 29.Re7+ Kg8 30.Rxe8+ 



Ditto.

30...Bxe8 

White has a comfortable lead in material, and Black is running short of time (which explains some of his following moves).

31.Rf4 Bh5 32.Rxh4 Be2 33.Re4 Bb5 34.Rxe6 Bc6 35.Re7 Bd7 36.Rxd7 Kf8 37.c6 Ke8 38.b4 h5 39.b5 h4 40.b6 h3 41.b7 Black lost on time
Wonderful!

Sunday, October 27, 2019

Jerome Gambit: When White Equalizes...

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Given enough time, and the lack of distractions, some problems can be solved effectively. Facing the Jerome Gambit in a 1-minute bullet game doesn't allow for much time, and the Jerome, itself, can be quite a distraction.

angelcamina - Master1615
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+ 




The Italian Four Knights Jerome Gambit.

5...Kxf7 6.Nxe5+ Nxe5 7.d4 Bxd4 8.Qxd4 Qe7 9.O-O d6


10.f4 Nc6 11.Qc4+ Be6 12.Qe2 Rhf8 



An earlier game saw the Rook move to the e-file, i.e. 12...Rhe8 in angelcamina - pippol7, lichess.org, 2019 (1-0, 30).

13.e5 dxe5 14.fxe5 Nxe5 15.Qxe5 Kg8 



Black has returned the sacrificed piece for a pawn, and has an even game. He should remember the warning, however: When White equalizes in the Jerome Gambit, he has the advantage.

16.Bg5 h6 17.Bxf6 gxf6 

Black might have considered 17...Rxf6 18.Rxf6 Qxf6 19.Qxf6 gxf6, when he would have the same pawn weaknesses as in the game, but White would have fewer pieces to attack them. Black's Bishop vs White's Knight would probably keep the game even.  

18.Qg3+ Kh7 19.Rae1 Qc5+ 20.Qe3 Qxe3+ 21.Rxe3


Black follows the same general idea as given in the above note, but, as his time winds down, he now makes an unforced error.

21...Bf5

White now only has to make "safe" moves in order to make progress.

22.Rxf5 Rg8 23.Re7+ Kg6 24.Rf2 Rad8 25.Re6 Rgf8 26.h4 Kh5 27.g3 Kg4 28.Kg2 f5 29.Rf4+ Kh5 30.Re5 Rd6 31.Rexf5+ White won on time. 

White's extra piece and pawn were bound to win, anyhow.

Friday, October 25, 2019

Jerome Gambit: Quick Disappointment

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In the following 1-minute game, it is clear that things did not go as planned, for Black.

angelcamina - Master1615
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5
5.Bxf7+ 



The Italian Four Knights Jerome Gambit. Black was looking for a balanced, quiet game, but this changed things.

4...Kxf7 6.Nxe5+ Nxe5 7.d4 Bb4 



Black has two extra pieces that he can return. He leads in development. Surely he is better? No, actually the game is about even. Nobody ever said that the Jerome Gambit made sense.

8.dxe5 Bxc3+ 9.bxc3 Nxe4

Sad. Best for Black was 9...Re8 10.exf6 Rxe4+ 11.Be3 Qxf6 12.0-0 d6, with an even game.

10.Qd5+ 



An improvement over 10.Qf3+, which still won, in angelcamina - puffy04, lichess.org, 2019 (1-0, 20) 

10...Kf8 11.Qxe4 d6 12.Ba3 Qg5 



Lashing out. Black tried 12...Be6 in angelcamina - apropes, lichess.org, 2019 (1-0, 21).

Black's King is at risk, and his defense fails. 

13.exd6 cxd6 14.Bxd6+ Kg8 15.O-O Bf5 16.Qd5+ Be6 17.Qxe6 checkmate

Tuesday, October 15, 2019

Jerome Gambit: Rooked

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There are many parts to the Jerome Gambit attack. An important one is the power of a White Rook along the f-file, where Black's King often resides. In the following bullet game - one minute, no increment - Black forgets this, to his demise. White has his choice of checkmates, soon after that.

angelcamina - Hamidi1986
1 0 bullet, lichess.org, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+ 

The Italian Four Knights Jerome Gambit.

5...Kxf7 6.Nxe5+ Nxe5 7.d4 Neg4 



Saving the Knight. In the regular Jerome Gambit line, a Black response (to d2-d4) of ...Bd6 would be suspect, but with the addition of his Knight on f6, as in this game, he is protected from a White Queen check on d5, so 7...Bd6, saving the Bishop, was probably best.  

8.dxc5 d5

Opening things up.

9.exd5

Stockfish 10 prefers 9.cxd6 e.p. Qxd6 10.Qxd6 cxd6, with the position better for Black. Even worse, it would lead to a tedious game, not idea for 1-minute chess.

9...c6 10.d6 Qd7 11.O-O Qf5 



12.f3 

A slip, but Black, in turn, misses 12...Qxc5+. He should have at least asked himself, why did White choose the text over 12.h3.

12...Ne5 13.Ne4 Nxe4 14.fxe4 



Oops.

14...Qxf1+ 15.Qxf1+ Ke6 16.Be3 

White already sees his checkmate; and, in doing so, bypasses 16.Qf5#.

16...Bd7 17.Qe2 

As above.

17...Raf8 18.Bd4 Nf7 19.Rf1 

Or 19.Qc4# or 19.Qg4#, but the game was already over in White's plans.

19...Ng5 20.h4 

Almost there.

20...Rxf1+ 21.Kxf1 Nf7 22.Qc4 checkmate



Gotcha.

Monday, October 7, 2019

A GM Faces the Jerome Gambit (Part 1)

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How many players of grandmaster strength have faced the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+)?

I can think of Joseph Henry Blackburne, author of the notorious 1884 dismantling of the opening.


(Please, let's not revisit the "urban legend" that Alekhine lost to the Jerome. Thank you.)


Of course, if we step outside the main lines and include the Open Italian Four Knights Jerome Gambit (otherwise known as the Noa Gambit, or the Monck Gambit- 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Bxf7+ - then we can add , Charousek, Euwe, Lasker, Marco, Marshall, Tarrasch, Teichmann, and Zukertort, for starters.


For today, let's not go there, either.


Still, I have just learned of a Jerome Gambit, played at bullet speed, online, against a grandmaster.


Let me share some recent exchanges of email with the legendary Australian "Cliff Hardy", player of the white pieces. There will be some move references, but do not let them distract you - I will be presenting the game, with annotations, in due time.

Hi Rick! 
Sorry to inundate you with another game but, after playing the Jerome Gambit for years, I finally got my first chance to play a Jerome Gambit against a GM! It was GM Yasser Quesada Perez, from Cuba.  
Unfortunately, I didn't win ðŸ˜­... 
Because GM Quesada Perez is quite new to Lichess - our game was only his 15th bullet game on the site - his bullet rating on Lichess is comparatively low for his standard of chess (his standard FIDE rating is much higher at 2572) and so I expect it will soon probably go a lot higher than it was at the time of this game.
Of course, I replied quickly
Hi, Cliff, 
Very glad to receive your game against Quesada Perez! 
Certainly provides one answer to the question "How would a GM respond to the Jerome Gambit??" 
Of course, it still leaves unanswered things like "How can you play such a coherent game with 1 second a move thinking time?" 
I have been going over the game, and will try to treat it with both a sense of respect and wonder when I post it on my blog - with you, your opponent, and my good pal, Stockfish 10, playing way over my head, it's a bit of a challenge to make sense of, and then share with readers. But, that's the whole point, I guess. 
[Black's 9th move] gave me a chuckle. It's a novelty, according to The Database, although your game later could transpose into a couple of online games from 2017. I can imagine the GM thinking: The only thing wrong with my position is that White may think he has an attack; so, let's exchange queens, and the rest will work itself out. No need for concrete analysis, especially in a bullet game.
Chances are, similar thinking produced [Black's 6th move]. It would be scary think a GM actually had a refutation to the Jerome Gambit in his repertoire. Most likely he thought (or just reacted) he'd settle for something reasonable, and figure the rest out later. I have seen that kind of thinking in numerous defenses to the Jerome - but the players were not super strong, and the "figuring" was much less effective.Stockfish 10 raises it's eyebrows only at [Black's 17th move], and its recommended followup for White is complicated and not at all clear to me, at least at this point - reaching =/+ in some lines, which has got to be the same as "=" in a bullet game (unless I'm playing, when it would be "-++" )
Nice game. Good to see you taking it to "the man". I mean - why not? I would do the same - although the comment was never truer than, for me, "After 1.e4, White's game is in its final throes". 
Thanks for sharing. 
I hope to learn more, and it'll show up in the blog. 
Rick
And Cliff came back with
Hi Rick! 
I was initially afraid you might not want to see the game, as it was a loss where I never really even got a great position, but I was quite excited to finally get a chance to play a GM with the Jerome. I was also quite glad I didn't botch it by just hanging a queen on move 8 or so ðŸ˜‰. 
Yes, I think he made it all up because he seemed to spend a bit more time on the first few moves. Now that Lichess shows move times, I can see that he took a "whopping" 2.0 seconds to play [his 6th move] 😉 , so it was one of his slowest moves in the game ðŸ˜‰. He spent even longer on [his 9th move]  (2.9 seconds on that move) so I guess he was trying to work out some sort of defence that would work best for him, like you said. Unfortunately, I tried to move too quickly and played [my 10th move] there - although who knows, technically [an alternate 10th move] is not that much better a move anyway... 
Yes, I noticed with the analysis that the computer didn't like [Black's 17th move] - but that was way over my head too! ðŸ˜‰ It was good fun to try against the GM and I will try to remember to throw in [the alternate 10th move] next time [his 9th move] is played. 
Also, it shows how there are so many GM's in the world - there's always some you've never heard of - or, at least, I'd never heard of this guy before this game! 
Bye
Me


[To be continued...]