Showing posts with label jedi. Show all posts
Showing posts with label jedi. Show all posts

Wednesday, March 25, 2020

A GM Faces the BSJG: Not Quite (Part 1)


Last year, on this blog, I had a lot of fun looking at the idea of a Grandmaster playing or facing the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), online or over-the-board. You might enjoy bouncing back to "A GM Faces the Jerome Gambit (Part 1 and Part 2) and "Jerome Gambit: More GMs? (Part 1 and Part 2)".

In summary, checking The Database, I found some online games with a GM-level player (2500 or above, according to the site's rating scales), but they featured either computers, human players with a lower FIDE rating, or human players whose FIDE rating I could not confirm.

I was left with 2 online games that matched my criteria: ChessCoachUA - PArnaudov, 3 0 blitz, lichess.org2017 (1-0, 39) and Cliff Hardy - Yasser Quesada Perez, lichess, 1 0, 2019 (0-1, 54).

The other day I started wondering: Did any GMs play or face the Blackburne Shilling Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+)? That search would be a different kind of task, as the game would have to feature either a rare example of a GM playing the BSG, or, even less likely, a GM playing the BSJG. But my curiosity was piqued...

A search of The Database did not turn up any games with a player (of either color) rated 2500. In fact, there was only one game with a player rated above 2300 - but it was an interesting enough game. White is rated 2386 on the site. 

ivan767 - SanChess2005
7 2 blitz, lichess.org, 2016

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 


The Blackburne Shilling Gambit.

4.Bxf7+ 

The Blackburne Shilling Jerome Gambit.

4...Ke7 

The surprises continue: Black plays the BSG, White "Jerome-izes" it, Black declines the gambit. (SanChess2005 has played this move at least once before, in a frantic 0 minutes, 1 second increment bullet game - see "Faster Than A Speeding Neuron".)

The Database has 755 games with 4...Ke7, with White scoring 70%.

For some thoughts on the BSJG declined, see "Idées Fixes et Manqués".

5.Bc4

White is happy with the pawn he has won, and with the fact that Black will not be able to castle; so he withdraws his Bishop.

5...Ke8

Black unblocks the d8-h4 diagonal, putting the main tactical theme of the Blackburne Shilling Gambit back into play. I have called this a kind of "Jedi mind trick".

6.Nxe5

White relaxes too soon. He could have remained safely a piece up by playing 6.Nxd4 Qh4 (if 6...exd4, 7.Qh5+) 7.Nf3 Qxe4+ 8.Be2

6...Qg5 

Compare this position with one in the main line of the BSG:





analysis diagram






7.O-O Qxe5 8.c3 

8...Nb5

Retreating the Knight to c6 would maintain Black's piece-for-two-pawns material advantage, although White would be somewhat better after 9.d4, because of his better pawn center and Black's less safe King.

9.d4 Qe7 10.Bxb5 c6 11.Bc4 b5 12.Bb3 Nf6 13.e5 Nd5 14.Nd2 Qg5 

White is better, but he has some work to do.

15.Ne4 Qg6 16.Re1 Bb7 17.Nd6+ Bxd6 18.exd6+ Kd8 19.Bxd5 cxd5 20.Bf4 Rf8 21.Be5 Qf5



22.a4

White wants to open a line for his Rook, and he is not afraid to offer his f2 pawn.

23...Qxf2+ 23.Kh1 Qxb2 24.Rb1 Qxc3 



All of this moving of the Queen is risky - in fact, White now has a checkmate in 11 moves, although it is hard to find in this complicated position, especially in blitz.

25.Rxb5 

Even stronger was 25.Bxg7, because Black's Rook cannot move.

25...Ba6 26.Rc5 

This saves his Rook but lets much of the energy escape from the position. White should go after the enemy Queen, but by playing 26.Rf1 Re8 27.Rf3, not the text. Once the Black Queen is moved away from covering the e1 square, White's Queen can go there - and then on to h5, with checkmate threats.

26...Qd3 27.Qxd3 Bxd3 28.Bxg7 Rf7 



White is a pawn up.

29.Bh6 Bc4 

Instead, after 29...Rf1+ 30.Rxf1 Bxf1 White will have to work for the point. 

30.Bg5+ Black resigned



It is checkmate in 3 more moves.


[to be continued]

Sunday, November 21, 2010

Declined Becoming More Accepted??

I peeked in on a blackburne game at ChessWorld.net the other day, and was surprised to see his opponent respond to the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) by declining the sacrificed Bishop.

While this is well in line with a recent game of mine (see "Here's My Plan...") as well as all of the "Jedi Mind Tricks" that I have been observing in the Blackburne Shilling Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+), where Black also declines the Bishop, it can hardly be called more than a psychological ploy.

It is as if Black declined being given "Jerome Gambit odds" and offered, instead, odds of "pawn and two moves" himself!

Watchwords for White in such cases must be: The price of victory is eternal vigilance...

blackburne - Talwhu
Chess.com, 11.2010

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


4...Kf8

A hint from the updated New Year's Database: If Black is going to decline the Bishop, this is probably how he should do it. In 161 games, White scored only 54% as opposed to when Black played 4...Ke7, when, out of 26 games, White scored 71%.

5.Bb3 Nf6

Instead, perrypawnpusher - ibeje, blitz, FICS, 2010 continued in exciting fashion with 5...h6 6.Nxe5 Nxe5 7.d4 Qh4  although I blundered in the endgame and lost (0-1, 46). 

6.Nc3 d6 7.d3 Bg4


blackburne had an earlier battle with some similar themes: 7...Bd4 8.Bg5 Bxc3+ 9.bxc3 h6 10.Be3 Bg4 11.0-0 Qe7 12.h3 Bh5 13.Kh2 a5 14.a4 Nd7 15.Qd2 Bxf3 16.gxf3 Nf6 17.Rg1 Rd8 18.Rg2 g5 19.Rag1 d5 20.Bxg5 hxg5 21.Rxg5 Rd7 22.Rg7 Qd6 23.R7g6 Ne7 24.Rg7 Rh7 25.Rxh7 Nxh7 26.exd5 Nxd5 27.Bxd5 Qxd5 28.Qh6+ Ke8 29.Rg7 Rxg7 30.Qxg7 Nf8 31.Qxc7 Ng6 32.Qc8+ Kf7 33.Qc7+ Kf6 34.Qb6+ Kf5 35.Qe3 Nh4 36.Qe4+ Qxe4 37.fxe4+ Ke6 38.Kg3 Ng6 39.c4 b6 40.c3 Nf4 41.d4 Nd3 42.h4 exd4 43.cxd4 Nb4 44.Kf4 Na6 45.d5+ Kd6 46.h5 Nc7 47.h6 Black resigned, blackburne - BrainFreeze, Chessworld.net, 2008.

8.Bg5 Nd4

This move should fail due to the tactical shot 9.Nxd4, as 9...Bxd1 is well answered by 10.Ne6+ Ke7 11.Nxd8 Bxc2 12.Nxb7 Bxb3 13.Nxc5 Bf7 14.Na6 when White remains a piece up.

9.0-0


9...Nxf3+ 10.gxf3 Bh3 11.Re1


This move seems okay to me, but Rybka was uncomfortable enough with it to suggest instead an exchange sacrifice: 11.f4 Bxf1 12.Qxf1 even giving White an edge after 12...Qd7 13.f5 c6 14.Be6 Qe8.

11...h6 12.Bxf6

It seems risky to invite the enemy Queen to join the party.

Rybka suggests 12.Be3 Bxe3 13.fxe3. Blackburne may have been wary of a further 13...Nxe4, as 14.fxe4? (or 14.dxe4?) loses quickly to 14...Qg5+. Still, 14.Nxe4 would provide a defense, e.g. 14...d5 15.Ng3 h5 16.f4, covering the critical g5 square.

12...Qxf6


13.Re3

Again, jettisoning the exchange with 13.Kh1 Bxf2 14.Rf1 Bxf1 15.Nd5!? was probably the best way to get some counterplay, even thought Black would have an edge in the resulting position. 

13...Qg5+ White resigned







Saturday, October 9, 2010

Platinum Mind Tricks

I had another encounter with what I have called a Blackburne Shilling Gambit "Jedi Mind Trick". My opponent was PlatinumKnight, so perhaps I should refer to it as a "Platinum Mind Trick".


perrypawnpusher - PlatinumKnight
blitz, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4


The Blackburne Shilling Gambit.

4.Bxf7+

The Blackburne Shilling Jerome Gambit.

The updated New Year's Database has 60 examples of games by my opponent in this line: 58 with Black, 2 with White. Two have already appeared on this blog, one against darrenshome and another against richiehill.

4...Ke7


Messing with my mind (4...Kxf7 was just fine)...

After our game I learned that PlatinumKnight is a bit of a specialist with this strategy, as the Database has 30 of his games with 4...Ke7, starting in 2005. 

5.Bc4

Also possible, of course, are 5.Bxg8 or  5.Bb3.

5...Ke8


A striking move, played, I imagine, to allow Black's Queen to regain access to the d8-h4 diagonal. Indeed, we have the original Blackburne Shilling Gambit position, except that Black's f-pawn is missing and Black's King cannot castle – neither will be important if he can pull off the usual BSG shenanigans.

6.Nxd4

I suspect that PlatinumKnight was hoping for 6.Nxe5, which he could answer with 6...Qg5 (and a roughly equal position) but I've learned my lesson from Master zadox.

I don't think that my opponent has faced 6.Nxd4 in this position before. Perhaps it will help him give up attempts at "mind tricks".

6...exd4

It is sad that after the game all Rybka had to recommend instead of this recapture was: 6...Qh4 7.Nf3 Qxe4+ 8.Be2 Qf5 when White is much better.

7.Qh5+


7...g6 8.Qe5+ Ne7

Or 8...Qe7, as in perrypawnpusher - zadox, blitz, FICS, 2010 (1-0, 14).

9.Qxh8 Black resigned






Wednesday, April 14, 2010

Watch me pull a rabbit out of my hat...

The other day I was having fun with a Blackburne Shilling Jerome Gambit (1.e4 d5 2.Nf3 Nc6 3.Bc4 Nc4 4.Bxf7+) and looked at a sideline that I had not analyzed before. I felt like a magician pulling a rabbit out of a hat.

Well, not quite.

perrypawnpusher - JokeritT
blitz 6 12, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4


4.Bxf7+

A good look at this line can be found in "Please, don't do that..." and "It's a good thing I read this blog".

4...Kxf7

No Jedi Mind Tricks.

5.Nxe5+ Ke8 6.Qh5+ g6


7. Nxg6 hxg6 8. Qxg6+


Taking the pawn is more prudent than taking the Rook: 8.Qxh8 Nxc2+ 9.Kd1 Nxa8 10.Qxg8 Qg5, when White's King is in more danger than Black's.


 



analysis diagram






8...Ke7 9. Qg5+ Nf6


I've analyzed this position enough to know that now after 10.Qc5+ d6 11.Qxd4 White has 4 pawns for his piece – and that computers give Black the edge, while humans are okay with the compensation.

But what about the other sharp move in the position? I didn't remember looking at that one. I thought I'd give it a try.

10. e5

Down two pieces, White offers a Rook! 

10... Nxc2+

And Black goes for it – which turns out to be a mistake.

As much fun as this line is, I have to admit that if Black had not been greedy, but played 10... Kf7 instead,  I'd have nothing more to work with than 11.Kd1, and then it looks like Black has good responses in 11...Rg8, 11...Bg7 and 11...Be7.

For example, 10...Kf7 11. Kd1 Rg8 12. Qxf6+ Qxf6 13. exf6 Rxg2 14. d3 d5 15. h3 Kxf6 and White's two Kingside pawns do not make up for the missing piece, especially since Black has the two Bishops.






analysis diagram





More encouraging for White (and thus, misleading) was for Black to decline the Rook offer with 10...Rg8, as in GOH - NightEagle, lightning, FICS, 2009: 10...Rg8 11.exf6+ Ke8 12.Qh5+ Rg6 13.Qxg6 checkmate.

I'm glad that I was not aware of GOH's game at the time I played JokeritT.

11. Kd1

11...Nxa1

Black needed to reconsider his chances and play 11... Ke6. White's best choice would likely then be to let the air out of the position with 12.Kxc2, when 12...Rg8 13.Qxf6+ Qxf6 14.exf6 Rxg2 was a likely followup. 

The position would be similar to the analysis diagram after Black's 10th move, although Black and White would have the same number of pieces, and White can develop his while Black scoops up the loose pawns on the Kingside.  






analysis diagram





In a game that I was unaware of until I was writing this post, I discovered that the alternative 11...Ke8 led to a disastrous outcome for the second player: 12.Qg6+ Ke7 13.Qxf6+ Ke8 14.Qg6+ Ke7 15.Qxc2 d5 16.exd6+ cxd6 17.Qe4+ Kd7 18.Nc3 a6 19.d4 Kc7 20.Bf4 Qf6 21.Nd5+ Black resigned, themuppeteer - risbo, blitz, FICS, 2005

I wish I had seen that game before taking on JokeritT.

12.Qxf6+


This is what I offered the Rook for.

12...Ke8 13.Qg6+ Ke7 14. d4


14...d6 15. Bg5+ Kd7 16. Bxd8 Kxd8


17.Qf6+ Be7

Slightly better was 17...Kd7, although after 18.Qxh8 White would have a Queen and a handful of passed pawns against Black's two Bishops. 

18. Qxh8+Kd7 19. exd6 Bxd6 20. Qg7+ Be7


21. Re1 Kc6 22. Qxe7 Bg4+ 23. f3 Bf5 24. Qc5+ Kd7 25. Qxf5+ Kc6 26. Qc5+ Kd7 27. Re7+ Kc8 28. Qxc7 checkmate


Tah dah!


Monday, April 12, 2010

Sith still and don't move...


I have posted on the "Jedi Mind Tricks" that may (or may not) have occured in my chess game and rematch with – Darth Zadox? Pleased was I, too long ago not, finding a similar effort unsuccessful...

djham - zadox
blitz FICS, 2010


1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4


The Blackburne Shilling Gambit. Maybe.

4.Bxf7+

The Blackburne Shilling Jerome Gambit.

4...Ke7


Highly irregular. There can be only one reason that my opponent (rated higher than me) would do this...
In perrypawnpusher - zadox, blitz FICS, 2010 our game continued 5.Bxg8 Ke8 6.Nxe5
No, no, no, no, no... This is the only move that gives the BSG any power!
Clearly, this is some kind of Jedi "mind trick"!
In this current game djham was not to be fooled. (You don't think he saw the earlier posts here, do you?)

5.Nxd4

5...exd4 6.Bd5


6..Nf6 7.0-0 Nxd5 8.exd5 d6


9.Re1+ Kd7 10.Qg4 checkmate


I think I detected a slight giggling in the Force...

Wednesday, March 10, 2010

Jedi Mind Tricks / Rematch

My first game against zadox had several strange and unexpected moves – odd enough for me to humorously attribute them to some kind of "Jedi Mind Tricks."

I was ready in our rematch, however, and the Blackburne Shilling Jerome Gambit had enough "Force" to win handily. 

perrypawnpusher - zadox
blitz 5 12, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4

 

The Blackburne Shilling Gambit. I have 15 wins, 2 losses and a draw against it, all with 4.Bxf7+.

4.Bxf7+ Ke7


Again with the mind tricks!

There is no "objective" reason to decline the sacrifice, but zadox has this all thought out. As soon as the White Bishop moves off of the f7 square along the a1-g8 diagonal, the Black King will move back to e8, freeing the Black Queen to go to g5 – should White play Nxe5.

Don't laugh. That's what I did in our first meeting: I took on e5.

5.Bc4

Or 5.Bxg8, as in perrypawnpusher - zadox, blitz FICS, 20105...Ke8 6.Nxe5 Qg5 7.Nf3 Qxg2 8.Nxd4 Qxh1+ 9.Ke2 Qxd1+ 10.Kxd1 Rxg8 11.d3 d6 12.Nc3 Bg4+ 13.f3 Bh5 14.Bg5 c5 15.Nf5 Bxf3+ 16.Kd2 h6 17.Bf4 g6 18.Nxd6+ Bxd6 19.Bxd6 Kd7 20.Bxc5 b6 21.Be3 Rac8 22.Rf1 Bg4 23.Rf7+ Ke6 24.Rxa7 g5 25.Ra6 Rc6 26.Nd5 Rgc8 27.Rxb6 Kd7 28.Rxc6 Kxc6 29.Ne7+ Black resigned

5...Ke8


"Hokey religions and ancient weapons are no match for a good blaster at your side, kid" - Han Solo, having blasted the pawn at f7.

6.Nxd4 exd4

It is dire to note that after the game Rybka suggested that best for Black was not the recapture, but 6...Qh4. Since White has 7.Qf3, the result – 7...Nf6 8. Nb3 – is not much better an outcome for Black.

7.Qh5+ g6

8.Qe5+ Qe7 9.Qxh8 Qxe4+


At this point I realized that the position was oddly similar to one in a game (a Damiano Defense) that I had played against Dr. Andrew Hinkle, 40 years ago. Mind trick, indeed.

10.Kd1 Qxg2


Better is 10...Ne7, but after 11.Re1 Black has no compensation for the Rook. 

11.Re1+ Kd8 12.Qxg8 Qg4+ 13.Be2


13...Qe6 14.Qxf8+ Black resigned

And not a midi-chlorian too soon.