Showing posts with label Abrahams. Show all posts
Showing posts with label Abrahams. Show all posts

Sunday, June 7, 2015

Doing the Enemy's Work


I like the Jerome Gambit in all its variations, and I love to show a snappy Jerome Gambit win; but sometimes it is necessary to balance the scale, and give Black a hand, too...

acuriel - DOCTOERDETROIT 
blitz, FICS, 2009

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Qh5+ Kf8 5.Qf5+ Nf6 6.Qxe5


Here is a position in the Abrahams Jerome Gambit that has been reached in 72 games in The Database. What is Black's best move now?

6...Bxf2+ 

Of course.

However, the move was played in only 7 of the aforementioned games, less than 10% of the time! Defenders, step up your game!

7.Kxf2 

Unwittingly going along with Black's plan.

7...Ng4+ 

Forking King and Queen.



White resigned

Monday, May 18, 2015

I'll Do The Thin'in' Around Here...





As a child I enjoyed watching Saturday morning cartoons, including the comic adventures of Hanna-Barbera's Quick Draw McGraw, the western sheriff who sometimes could get caught up in his own ideas, proclaiming "I'll do the thin'in' [thinking] around here... And don't. you. forget. it."

In the following game, White inadvertently follows Quick Draw, by responding to Black's "psychological" riposte -- You want me to take the Bishop?? So - I won't take the Bishop! -- by dropping his guard, as if to remind his opponent I'll do the attackin' around here... And don't. you. forget. it.

Disaster follows.

bereakatze - pawnstarrr
blitz, FICS, 2015

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ 


The Abrahams Jerome Gambit, which we have been looking at on this blog lately.

3...Kf8

The Abrahams Jerome Gambit Declined, which "objectively" turns Black's better game into a better game for White - especially after 4.Bc4 or 4.Bb3.

The Database has 432 games with this move,  in which White has scored 64%. That number is surprisingly low, but perhaps that is because White doesn't always play "objective" chess, but insists that Black take the piece by leaving it en prise. (It is interesting to note that The Database shows that against ...Kf8 in the regular Jerome Gambit Declined, White has scored only 58%.) 

4.d3 Qf6 5.Bb3

The Database has a couple of alternative games, one a warning to White and one a caution to Black: 
5.c3 Qxf2 checkmate, clocked - wileyone, FICS, 2009; and 

5.Qf3 Qxf7 6.Qxf7+ Kxf7 7.Nf3 Nf6 8.Nxe5+ Ke7 9.0-0 d6 10.Nc4 Nbd7 11.Bg5 h6 12.Bh4 g5 13.Bg3 b6 14.Kh1 Bb7 15.f4 gxf4 16.Bxf4 h5 17.Nbd2 Rag8 18.Nf3 c6 19.Nh4 d5 20.Ne5 Nxe5 21.Bxe5 Rf8 22.Ng6+ Kf7 23.Nxh8+ Black ran out of time, greatbigdave - lucluc, FICS, 2001

5...Qxf2 checkmate

Kabong!

Thursday, May 14, 2015

More and More About What We Know So Little



In the last few days I have added over 10,000 Abrahams Jerome Gambit games (1.e4 e5 2.Bc4 Bc5 3.Bxf7+), which we have been discussing recently, to The Database, pushing it almost to 51,000 games, total. (I can probably add another 10,000 Abrahams JG games to bring things up-to-date with play at FICS.)

Reviewing my email files, I note that in the past I have discussed the opening with the always-impressive IM/PhD Tim Harding (whose 1973 Bishop's Opening is a classic, whose articles for chesscafe.com  helped answer the question "What Exactly Is the Bishop's Opening?", and whose biography of Joseph Henry Blackburne many await from McFarland) and with Michael Goeller, who maintains an excellent online resource on the Bishop's Opening; and neither was familiar with the early Bishop sacrifice.

That pretty much makes three of us.

I have recently contacted IM Gary Lane, a long-time friend of this blog, who has written Winning With the Bishop's Opening (1993) and The Bishop's Opening Explained (2005). While he is not familiar with the Abrahams Jerome Gambit, either, he is willing to take a look at it with his readers in his next month's "Opening Lanes" column at ChessCafe.com. 

I hope to learn more - much more. I need to. It is ridiculous that the "oldest" over-the-board game example of this line in The Database is a 2003 game:

Kuckuck,D - Loesche,N 
EU-ch U08 Germany, 2003

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Nf3 Nf6 5.0-0 Nxe4 6.Nxe5+ Kf8 7.Re1 Bb4 8.Rxe4 b6 9.Rxb4 Bb7 10.c4 Ke7 11.d3 h5 12.f3 g5 13.f4 gxf4 14.Bxf4 d6 15.Bg3 h4 16.Bf2 b5 17.Rb3 Rh7 18.Nd2 Qd7 19.Ne4 Nc6 Black resigned

The "oldest" online game example in The Database is only from 1999.

ChessNinja  - Leebros
FICS,1999

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Qh5+ Kf8 5.Qxe5 Qe7 6.Qf5+ Nf6 7.e5 d6 8.Qxc8+ Kf7 9.Qxh8 Nc6 10.Qxa8 Qxe5+ 11.Ne2 Nd4 12.Nbc3 Ng4 13.Qxb7 Nxc2+ 14.Kf1 Nxh2+ 15.Rxh2 Qxh2 16.Qxc7+ Kg6 17.Rb1 Qh1+ 18.Ng1 Ne1 19.Kxe1 Qxg1+ 20.Ke2 Qxf2+ 21.Kd1 Black ran out of time




Tuesday, May 12, 2015

Exploring

Image result for free clip art exploring

After the previous post ("Keep Your Eye on the Prize") I started gathering thousands of Abrahams Jerome Gambit games and adding them to The Database, to develop a better understanding of the opening.

As the following game shows, theory of some of the variations is not far developed.


macele - torment

blitz, FICS, 2005

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ 




3...Kxf7 4.Qh5+ Ke6 5.Nf3 




I was surprised to see that this move leads to an even game. So far, less than half of the games in The Database have this move.


Now, after 5...Nc6, the position would resemble a Jerome Gambit where the "ghost" White Queen has passed through the White Knight to deliver check.


5...d6 6.Ng5+ 


I have always been suspicious of this move in the Jerome Gambit proper, but here it seems necessary.


6...Kd7 7.Nf7 Qf6


One of a few equal responses. Black could have tried 7...Qf8 8.f3 Nf6 9.Qh3+ Kc6 10.g4 Qxf7 11.Qf1 d5 12.exd5+ Qxd5 13.Nc3 Qe6 14.Qb5+ Kd6 15.b4 b6 16.bxc5+ bxc5 17 Ba3 c6 18.Qxc5+ Kd7 19.O-O Nxg4 20.fxg4 Qxg4+ 21.Kh1 Bb7 22.Rg1 Qf3+ 23.Rg2 Re8 24.Kg1 Ba6 25.d3 Bb7 26.Rf1 Qh5 27.Rxg7+ Kc8 28.Qd6 Black resigned, Turkman - andrecoenen,  FICS, 2006. 

Or 7...Qe8 8. Qf5+ (8.Qg4+ Kc6 9.Qxg7 Be6 10.Nxh8 Nd7 11.b4 Bxb4 12.c3 Bc5 13.Ba3 Ndf6 14.Bxc5 dxc5 15.Na3 Rd8 16.Nb5 Rd7 17.Qg3 Kxb5 18.c4+ Bxc4 19.a4+ Kc6 20.a5 Rd3 21.Qg7 Qd8 22.O-O Nxe4 23.Nf7 Qd4 24.Nxe5+ Kb5 25.Rfb1+ Ka6 26.Qf6+ Ngxf6 White resigned, AlexPR - raviven, FICS, 2008; or 8.Qf3 Nf6 9.Nxh8 Qxh8 10.d3 Nc6 11.Be3 [11.c3 Ke8 12.Bg5 Bg4 13.Qg3 Be6 14.Nd2 Kd7 15.f4 Rf8 16.fxe5 dxe5 17.b4 Bd6 18.O-O h6 19.Be3 Ng4 20.Rxf8 Qxf8 21.Rf1 Qe7 22.a3 Nxe3 23.Qxe3 Qg5 24.Qxg5 hxg5 25.Nf3 g4 26.Ng5 Bg8 27.Nf7 Be7 28.b5 Bxf7 29.Rxf7 Nd8 30.Rxg7 Ne6 31.Rxg4 Bxa3 32.h4 Ke7 33.h5 Kf7 34.h6 Nf8 35.Rg7+ Kf6 36.Rxc7 Kg6 37.Rxb7 Kxh6 38.d4 exd4 39.cxd4 Bb2 40.d5 Bd4+ 41.Kf1 Kg6 42.Ke2 Kf6 43.Kf3 Ng6 Black resigned, Philidor 1792 - guest1923, www.bereg.ru, 2015] 11...Bxe3 12.fxe3 b6 13.O-O Bb7 14.Qh3+ Ke7 15.Nc3 Bc8 16.Qh4 Be6 17.Nd5+ Bxd5 18.exd5 Nb4 19.Qxb4
Nxd5 20.Qc4 Ke6 21.e4 b5 22.Qxd5+ Kd7 23.Rf7+ Kc8 24.Raf1 Black resigned, pauldiekrake - AlgozBR, FICS, 20148...Kc6 9.Qh5 (9.Qf3 Nf6 10.Nxh8 Qxh8 11.d3 Bg4 12.Qg3 Nbd7 13.h3 Be6 14.O-O Rf8 15.Be3 Nh5 16.Qh2 b6 17.Bxc5 Nxc5 18.Nd2 Nf4 19.b4 Nd7 20.c4 Kb7 21.a4 g5 22.a5 h5 23.Nf3 g4 24.Nh4 Nf6 25.g3 Nxh3+ 26.Kg2 Bxc4 27.dxc4 Nxe4 28.Ng6 Qf6 29.Nxf8 Qf3 checkmate, RattyMouse - raviven, FICS,  2007) 9...Nf6 10.b4 Bxf2+ 11.Kxf2 Nxh5 12.b5+ Kb6 13.Nxh8 Qxh8 14.d3 Qf8+ 15.Ke2 Bg4+ 16.Ke1 Nd7 17.Nc3 c6 18.bxc6 bxc6 19.Rf1 Ndf6 20.Bd2 Kc7 21.Na4 Qe7 22.Rb1 Nd7 23.h3 Be6 24.Ba5+ Kc8 25.Kd2 Rb8 26.Rxb8+ Nxb8 27.Rb1 Qg5+ 28.Kc3 Qxg2 29.Bb6 axb6 White resigned, AlexPR - raviven, FICS, 2007. 

Or 7...Nf6 8.Qf5+ (8.Qh4 Bxf2+ 9.Kxf2 Nxe4+ 10.Qxe4 Qf6+ 11.Qf3 Qxf3+ 12.gxf3 Rf8 13.Ng5 h6 14.Nh3 Nc6 15.c3 Kd8 16.d3 Bxh3 17.Rg1 Rg8 18.Bxh6 Kd7 19.Bxg7 Rae8 20.Nd2 Bf5 21.Ne4 Bxe4 22.dxe4 Kc8 23.b4 Kb8 24.b5 Na5 25.a4 Nc4 26.Rab1 Nd2 27.Rbd1 Nb3 28.Bh6 Rxg1 29.Rxg1 Nc5 30.a5 Nd3+ 31.Ke3 Nc5 32.h4 Ne6 33.Bg5 Ng7 34.Rg4 Nh5 35.Bh6 a6 36.bxa6 bxa6 37.Rg5 Nf6 38.Rg6 Ng8 39.Bg5 Rf8 40.h5 Kb7 41.h6 Nxh6 42.Bxh6 Rh8 43.Bg7 Rg8 44.f4 exf4+ White forfeited on time, radejanus - Erge, FICS, 2008; or 8.Qe2 Qf8 9.Nxh8 Qxh8 10.O-O h5 [10...Nc6 11.c3 Ke7 12.h3 Be6 13.Na3 a6 14.Nc4 Qc8 15.d3 Bxh3 16.gxh3 Qxh3 17.Be3 Ng4 18.f3 Qg3+ 19.Qg2 Qxg2+ 20.Kxg2 Nxe3+ 21.Nxe3 Bxe3 22.Rh1 h6 23.Rh5 g6 24.Rh4 Bf4 25.Rah1 Rh8 26.Rg4 Kf6 27.a4 Ne7 28.b4 Bd2 29.d4 Bxc3 30.dxe5+ Bxe5 31.b5 axb5 32.axb5 g5 33.Kf2 d5 34.Ke2 dxe4 35.Rxe4 Nd5 36.Kd3 Kf5 37.Kc4 Nb6+ 38.Kc5 Nd7+ 39.Kd5 Nf6+ 40.Kc4 Nxe4 41.fxe4+ Kxe4 42.Re1+ Kf4 43.Kd5 Rd8+ 44.Ke6 Rd6+ 45.Ke7 Bd4 46.Rf1+ Kg4 47.Rh1 h5 White resigned, ndizvoh - sniktawiii, FICS, 2014] 11.h3 Ke7 12.d3 Qh7 13.Bg5 Qg6 14.Qd2 Kf7 15.Bxf6 gxf6 16.Kh2 Nd7 17.f4 exf4 18.Rxf4 Ne5 19.d4 Nc4 20.Qf2 Bb6 21.b3 Na5 22.c3 c5 23.Nd2 cxd4 24.Rf1 Bd8 25.cxd4 Nc6 26.e5 dxe5 27.dxe5 Nxe5 28.Ne4 Nd3 29.Rxf6+ Bxf6 30.Qd4 Bf5 31.Qd5+ Kg7 32.Qxb7+ Kh6 33.Nxf6 Rf8 34.Nd7 Rf7 35.Qf3 Rxd7 36.Qxf5 Qxf5 37.Rxf5 Nc1 38.Rf2 a5 39.Rc2 Nd3 40.Rc6+ Kg5 41.Rc2 Nb4 42.Rc5+ Rd5 43.Rxd5+ Nxd5 44.a3 Nc3 45.Kg3 Ne4+ 46.Kf3 Nc5 47.b4 axb4 48.axb4 Na4 49.b5 Nb6 50.Kg3 h4+ 51.Kf3 Nc4 52.g3 Ne5+ 53.Kg2 hxg3 54.Kxg3 Nc4 55.h4+ Black forfeited on time, ndizvoh - LadyBishop, FICS, 2014; or 8.Qh3+ Ke7 9.Nxd8 Bxh3 10.gxh3 Rxd8 11.d3 Nc6 12.Nc3 Nd4 13.O-O Nxc2 14.Rb1 Nd4 White forfeited on time,  Djmilen - Torny, FICS, 2006) 8...Kc6 9.Nxd8+ Rxd8 10.Qg5 Rg8 11.d3 Bd4 12.Na3 Na6 13.Be3 Nb4 14.O-O-O Nxa2+ 15.Kb1 Nc3+ 16.bxc3 Bxc3 17.d4 Nxe4 18.Qh4 Bf5 19.f3 g5 20.Qxh7 Bxh7 21.fxe4 Bxe4 22.dxe5 dxe5 23.Rhf1 Bxg2 24.Rg1 Bf3 25.h4 Bxd1 26.Rxd1 gxh4 27.Rd3 Bb4 28.Nc4 e4 29.Ne5+ Kb5 30.Rb3 a5 31.c4+ Ka6 32.Ka2 c5 33.Nd7 Rg2+ 34.Kb1 b6 35.Ne5 a4 36.Rd3 exd3 37.Nc6 d2 38.Nxb4+ cxb4 39.Kc2 Rd8 White resigned, austindark - AkeZ, FICS, 2008. 


Or 7... g6 8. Qg4+ Black resigned, Kazzakii - kkpsA, FICS, 2014. 


Or 7...Bxf2+ 8.Kxf2 Nf6 9.Qh3+ Kc6 10.Qc3+ Kd7 11.Nxd8 Kxd8 12.d3 Ng4+ 13.Ke1 Nc6 14.Bg5+ Ke8 15.h3 Nh6 16.Bxh6 gxh6 17.Rf1 Be6 18.Qd2 Nd4 19.c3 Nc6 20.Qf2 Ke7 21.Qf6+ Kd7 22.Qg7+ Ne7 23.Qxh6 Rag8 24.g4 Ng6 25.Qe3 Nf4 26.Rxf4 exf4 27.Qxf4 Rf8 28.Qe3 b6 29.Nd2 Rf7 30.Kd1 Rg8 31.Kc2 Rgf8 32.d4 Kc8 33.d5 Bd7 34.Qe2 Kb7 35.Rf1 Black resigned, Mannixcannon - Txanan, FICS, 2014)


8.Qf5+


Instead, 8.Qf3 seems essential.


Alternately 8.Qg4+ Ke7 9.Qg5 Kxf7 10.Qxf6+ Nxf6 11.d3 Ng4 12.O-O Nc6 13.c3 Be6 14.b4 Bb6 15.a4 a6 16.h3 Nf6 17.Bg5 Nh5 18.Nd2 h6 19.Bh4 g5 20.Bg3 Raf8 21.Nf3 Ke7 22.b5 axb5 23.axb5 Na5 24.c4 Nb3 25.Ra3 Nd4 26.Nxd4 Bxd4 27.Ra7 Bxa7 28.Bh2 Nf4 29.Bxf4 gxf4 30.Kh1 Rhg8 31.f3 Rf6 32.Kh2 Rg3 White resigned, drcollie - nytwotwenty, FICS, 2006; or 8.O-O g6 (8...Nc6 9.Nxh8 Nd4 10.Na3 Bxa3 11.bxa3 Nxc2 12.Rb1 b6 13.Rb2 Nd4 14.Rb1 Bb7 15.d3 Ne7 16.Nf7 Rf8 17.Ng5 Ba6 18.Rd1 g6 19.Qxh7 Ne2+ 20.Kh1 Nxc1 21.Nf3 Ne2 22.Rd2 Nd4 23.Nxd4 exd4 24.Rf1 Rf7 25.Qh3+ Kd8 26.f4 Nc6 27.Qf3 g5 28.f5 Ne5 29.Qg3 Nxd3 30.Rxd3 Bxd3 31.Qxd3 Qe5 32.Re1 Rh7 33.h3 g4 34.Kg1 gxh3 35.Qxh3 Rxh3 36.gxh3 Qg3+ 37.Kf1 Qxh3+ 38.Kf2 Qh2+ 39.Kf3 Qh3+ 40.Kf4 Qxa3 41.Re2 Qe3+ 42.Rxe3 dxe3 43.Kxe3 Ke7 44. Kf4 Black forfeited on time, RattyMouse - attackme, FICS, 20089.Qh3+ (9.Qf3 Qxf3 10.gxf3 Ke7 11.Nxh8 Kf8 12.d3 Kg7 13.Nxg6 hxg6 14.c3 Bh3 15.Re1 Nd7 16.a4 Rf8 17.b4 Bb6 18.a5 Bxf2+ 19.Kxf2 Ngf6 20.Kg3 Be6 21.h4 Nh5+ 22.Kf2 Bg4 23.Nd2 Nf4 24.Kg3 Nxd3 25.Re3 Nxc1 26.fxg4 Ne2+ 27.Rxe2 c6 28.Rh1 Black resigned, radejanus - Blus, FICS, 2014) 9...Kc6 10.Qf3 Qxf3 11.gxf3 Bh3 12.Re1 Nf6 13.Nxh8 Nbd7 14.Nf7 Nh5 15.Ng5 Nf4 16.Nxh3 Nxh3+ 17.Kg2 Nxf2 18.c3 Nf6 19.b4 Bb6 20.c4 Nd3 21.Rd1 Nxb4 22.Ba3 Nc2 23.Nc3 Nxa1 24.Rxa1 Rf8 25.Rf1 Nh5 26.h3 Nf4+ 27.Kg3 Nd3 28.Ne2 h6 29.Kg4 Nf2+ 30.Kg3 g5 31.c5 Nxe4+ 32.fxe4 Rf2 33.Kxf2 Bxc5+ 34.Bxc5 Kxc5 35.Ng3 Kd4 36.Nh5 Kd3 37.Nf6 Kxd2 38.Nd7 Kd3 39.Kf3 Kc4 40.Rc1+ Black forfeited on time, Rattymouse - COHGNH, FICS, 2007. 


8...Qxf5 9.exf5 Nf6 10.Nxh8 Ke7 11.c3 Bxf5 12.d4 Bb6




Black is temporarily down the exchange, but White's Knight on h8 will soon be lost, giving the defender the advantage.


13.dxe5 dxe5 14.Bg5 Nc6 15.O-O Rxh8 16.Re1 h6 17.Be3 Bxe3 18.Rxe3 Rd8 19.Na3 a6 20.Nc4 Ke6 21.f3 Nd5 22.Re2



A slip, which compounds White's problems.


22...Bd3 23.Rd2 Bxc4 24.b3 Be2 25.Rxe2 Nxc3 26.Rc2 Rd1+ 27.Rxd1 Nxd1 28.Rd2 Nc3 29.a3 Nd4



30.Kf2 Kf5 31.Rd3 Nd5 32.g3 g5 33.g4+ Kf4 34.h3 c6 35.Kg2 Ne2 36.Kf2 Nc1 37.b4 White forfeited by disconnection




Sunday, May 10, 2015

Keep Your Eye On The Prize

Putting Black's Queen on f6, with the idea of exchanging Her Majesty, is a common anti-Jerome Gambit strategy. In the following game, Black introduces the plan, then wavers - and the game ends quickly.


Philidor 1792 - guest1862
3 0 blitz, www.bereg.ru, 2015

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ 




Another example of the Abrahams Jerome Gambit.


As far as I can tell, Alonzo Wheeler Jerome did not play the Bishop sacrifice out of the Bishop's Opening, but Gerald Abrahams attributed the gambit to him nonetheless.


4...Kxf7 4.Qh5+ Ke6 5.Qf5+ 


Houdini judges the Abrahams Jerome less harshly than it does the Jerome proper, suggesting that here 5.Nf3, instead, equalizes. This bears further examination, as this blog has in the past presented only two losses by White with 5.Nf3 - see "The Abrahams Jerome Gambit (Part II)".


5...Kd6 6.Nf3 Qf6 7.d4 Bxd4 




Black overlooks the reason behind his 6th move, that of exchanging Queens, and is subsequently severely punished. 

Some contrasting examples: 7...Qxf5 8.dxc5+ Kxc5 9.exf5 (9.Be3+ Kd6 10.exf5 Nf6 11.0-0 [11.Nc3 Re8 12.0-0-0+ Ke7 13.Nd5+ Nxd5 14.Bg5+ Nf6 15.Nxe5 Kf8 16.Bxf6 gxf6 17.Nxd7+ Bxd7 White resigned, Geeeman - ludonix, FICS, 2014] 11...Nd5 12.Rd1 c6 13.Nc3 Rf8 14.Nxd5 cxd5 15.b4 Rxf5 16.Bc5+ Ke6 17.Re1 d6 18.Be3 Nc6 19.b5 Nb4 20.Re2 Bd7 21.Rd1 Bxb5 22.Ree1 Nxc2 23.Rf1 Bxf1 24.Kxf1 d4 25.Bd2 d5 26.Rc1 d3 27.g4 Rxf3 28.Kg2 Rff8 29.f3 Nd4 30.Rf1 e4 31.f4 Rac8 32.Bc3 Rxc3 White resigned, KevinSI - fedand, FICS, 20149...d5 10.Nxe5 Ne7 11.0-0 Nxf5 12.Nd3+ Kd6 13.Bf4+ Kd7 14.Nc5+ Kc6 15.b4 b6 16.Nd3 Nd4 17.Ne5+ Kb7 18.Nc3 Nxc2 19.Rac1 Nxb4 20.a3 N4c6 21.Nxd5 Be6 22.Nxc6 Nxc6 23.Rfd1 Rhd8 24.Nxc7 Rxd1+ 25.Rxd1 Rd8 26.Rxd8 Nxd8 27.h3 Bb3 28.g4 a6 29.Kg2 Nf7 30.h4 h6 31.h5 a5 32.Nb5 Bd5+ 33.Kg3 Kc6 34.Nd4+ Kc5 35.Nf5 Kc4 36.Nxg7 Kb3 37.Nf5 Kxa3 38.Nd4 a4 39.g5 hxg5 40.Be3 Kb4 41.Kg4 Kc4 42.f4 gxf4 43.Kxf4 a3 44.Nc2 a2 45.Bd4 Kb3 46.Ne3 Be6 47.Nd1 b5 48.Ba1 b4 49.Nb2 Kc2 50.Na4 b3 51.Bb2 Bd7 52.Nc5 Kxb2 53.Nxd7 a1Q White resigned, KevinSI - lavaprut, FICS, 2014. 


8.Nxd4 exd4 9.Qd5+ Ke7 10.Bg5 Black resigned




Thursday, April 16, 2015

Hybrid

Chessfriend Philidor 1792 has sent another collection of Jerome Gambit, reversed Jerome Gambit, and Jerome Gambit-inspired games.

The game below is an interesting mix of opening systems. White combines the "Abrahams Jerome Gambit" - 1.e4 e5 2.Bc4 Bc5 3.Bxf7+ - with the "Scholar's Mate" - 1.e4 e5. 2.Qh5 Nc6 3.Bc4 Nf6 4.Qxf7+ - and plays it all in a 3-minute game. Black holds on for a while, but, in the end, either nerves or shortage of time lead to his downfall.


Philidor 1792 - guest1433
3 0 blitz, www.bereg.ru, 2015

1.e4 e5 2.Bc4 Bc5 3.Qh5



We have seen this hybrid before. See "A Scholarly Abrahams Jerome Gambit".

3...Qf6 4.Bxf7+ Qxf7 5.Qxe5+


5...Qe7 6.Qxe7+ Nxe7 7.c3 d5 8.d4 Bb6 9.e5 c5 10.Be3 



An earlier game continued: 10.dxc5 Bxc5 11.f4 Nbc6 12.Nf3 Be6 13.Na3 Bxa3 14.bxa3 0-0-0 15.Be3 Rhf8 16.Ng5 Bf5 17.Kf2 h6 18.Nf3 Be4 19.h4 Nf5 20.Rad1 b6 21.h5 Na5 22.Bc1 Nc4 23.Rh3 Kb7 24.g4 Ne7 25.e6 Bxf3 26.Rxf3 Rd6 27.f5 Rfd8 28.Re1 d4 29.cxd4 Rxd4 30.f6 gxf6 31.Rxf6 Nd6 32.Rf4 Rd3 33.Rf7 Re8 34.Bxh6 Kc6 35.Rf8 Rxa3 36.Rxe8 Nxe8 37.Bf8 Rxa2+ 38.Kg3 Nd5 39.h6 Ra3+ 40.Bxa3 Black resigned,  Philidor 1792 -guest124, www.bereg.ru, 2014

10...Nf5 11.Na3 cxd4 12.cxd4 Bxd4 13.Bxd4 Nxd4 14.0-0-0


Blitz games are often about development and King safety. If White loses this game, it won't be because of the extra pawn he invested.

14...Ndc6 15.Nb5 Na6 16.Rxd5 Be6 17.Rd6 Ke7 18.Nf3 Rad8 19.Ng5 Rxd6 20.exd6+ Kd7 21.a3 Rf8 22.Ne4 Bc4 23.Nbc3 Nab8 24.Rd1 Na6 

White's advanced "Jerome pawn" is not enough compensation for the sacrificed piece, but his knowledge of this kind of play, and advantage on the clock may well be.

25.b4 b5 26.f3 Ne5 27.Rd4 Nd3+ 28.Kd2 Nb2 29.Nf2 Rf6 30.Nce4 Rg6 31.Ng4 Re6 32.f4 Kd8 33.Ne5 Rh6


White's pieces have come together, while Black's are scattered.

34.d7 Be6 35.Nc6+ Kc7 36.d8Q+ Kxc6 37.Rd6+ Kb7 38.Rxa6 Kxa6 39.Nc5 checkmate



Thursday, February 5, 2015

Updated


I have updated The Database with games from FICS (Free Internet Chess Server) through 2014. It now contains over 39,000 games.

The basic Jerome Gambit position, after 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+, appears in about 11,600 games. White scores 45%

The Italian Four Knights Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Bc5 5.Bxf7+, appears  2,300 times. White scores 38%.

Interestingly, the Semi-Italian Four Knights Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 h6 5.0-0 Bc5 6.Bxf7+, appears only 120 times, but White scores 65%. Note the "power" (or lack of) ...h6.

This is reflected in the Semi-Italian Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.0-0 Bc5 5.Bxf7+, appearing in about 160 games, where White scores  66%. Interestingly, with 4.Nc3, in about 130 games, White scores only 54%.

The Blackburne Shilling Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+, appears in about 5,000 games, with White scoring 56%.

Recent examples of the Abrahams Jerome Gambit, 1.e4 e5 2.Bc4 Bc5 3.Bxf7+, have been added. There are a little over 2,500 examples, and White scores 50%.

Because the line continues to show up, and is worth knowing, the nameless 1.e4 e5 2.Nf3 Nc6 3.Bc4 Na5 4.Bxf7+  appears in The Database 2150 times, with White scoring  72%.

There is also a large selection of Jerome-ish lines, featuring, for example, an early Bxf7+ by White. Some Reversed Jerome Gambit games have been included, as well.

Monday, January 26, 2015

Method In't



Playing the Jerome Gambit - or any other opening, as far as I am concerned - in bullet (1 minute, no increment) chess is madness; but, as the following game from lichess.org shows, as was said by Hamlet, "Though this be madness, yet there is method in 't"

obamaGANDON - JAVAD76

1 0 bullet, lichess.org, 2014

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7




Listed in lichess as "Bishop's Opening, Jerome Gambit" but referred to on this site as the "Abrahams Jerome Gambit". For a recent discussion, see "Alert!"


4.Qh5+ g6 


One advantage for the attacker in bullet chess is if the defender does not know the best opening moves, the game can be over very quickly due to an early blunder. Here, for example, Black's best move is 4...Kf8, with an advantage.


On the other hand, this is a bullet game, and anything can happen.


5.Qxe5 d6


The only other game that I have with this line in The Database  continued 5...Qe7 6.Qxh8 Qxe4+ 7.Ne2 Qxg2 8.Qxh7+ Kf8 9.Rf1 d6 10.d4 Bxd4 11.Nxd4 Qe4+ 12.Ne2 Bg4 13.Nbc3 Qxc2 14.Bh6+ Nxh6 15.Qxh6+ Kg8 16.Qxg6+ Qxg6 17.Rg1 Nd7 18.h3 Re8 19.Rxg4 Kf7 20.Rxg6 Kxg6 21.Nd5 Ne5 22.Nxc7 b5 23.Nxb5 a5 24.Nxd6 Re6 25.Nf4+ Black resigned, burraburra - grechy, FICS, 2011


Best, according to Houdini, is 5...Bxf2+ (getting a pawn for the endangered piece) 6.Kxf2 Nf6 when White has an edge, a pawn up.


With the text, Black may be remembering the Blackburne Defense to the regular Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.Qh5+ g6 7.Qxe5 d6) but the Rook sacrifice does not work here.


Up the exchange and two pawns, White "only" has to make normal moves and watch his clock.


6.Qxh8 Be6 7.Nf3 d5 8.Qxh7+ Kf8 9.Qxg6 Bf7 10.Qf5 Nh6 11.Qf4 Ng8 12.exd5 c6 13.0-0 cxd5 14.Ne5 Black forfeited on time 


Friday, June 6, 2014

A Scholarly Abrahams Jerome Gambit



Philidor 1792 - guest124
5 0 blitz, www.bereg.ru, 2014

1.e4 e5 2.Bc4 Bc5 3.Qh5 




Philidor1792 would be having a lucky day, indeed, if he were now able to pull off the "scholar's mate" - 3...Nf6? 4.Qxf7#.


3...Qf6 4.Bxf7+ Qxf7 5.Qxe5+ Qe7 6.Qxe7+ Nxe7




The game has experienced an interesting transformation, almost transposing into an Abrahams Jerome Gambit, 1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Qh5+ Ke8* 5.Qxe5+ Qe7 6.Qxe7+ Nxe7, like the game in the previous post.  (See "A New Abrahams Jerome Gambit", as well as "Abrahams Jerome Gambit" Part I and Part II).


Of course, Black's 4th move, above, is illegal, but if he were to play, instead, 4...Kf8, and the game proceeded similarly otherwise with 5.Qxe5 Qe7 6.Qxe7 Nxe7, that would be a legitimate Abrahams Jerome Gambit; and if Black were later to play ...Kf7 to allow castling-by-hand, as in Philidor1792 - guest543, www.bereg.ru, 2014, the transformation would be complete.


By the way, I have not been able to find many games starting 1.e4 e5 2.Bc4 Bc5 3.Qh5 Qf6 (or 3...Qe7) 4.Bxf7+ (although I did speculate about the line and Alonzo Wheeler Jerome in "Proto-Jerome Gambits? (Part 2)"), but all of them have been put into The Database. I plan on checking through my issues of Randspringer to see if there is any analysis there.


If all of this seems a bit egregious,  I should remind Readers of Emmanuel Lasker's best, if not the last, words on the Jerome Gambit, responding to a letter to “Our Question Box” in the March 1906 issue of Lasker’s Chess Magazine

No; the Jerome gambit is not named after St. Jerome. His penances, if he did any, were in atonement of rather minor transgressions compared with the gambit.
The picture at the top of this post is of St. Jerome.

7.c3 d5 8.d4 Bb6 9.e5 c5 10.dxc5 Bxc5 11.f4 Nbc6 12.Nf3 Be6




You have to have faith in the "Jerome pawns" to play on in this kind of position.


13.Na3 Bxa3 14.bxa3 0-0-0 15.Be3 Rhf8 16.Ng5 Bf5 17.Kf2 h6 18.Nf3 Be4 


19.h4 Nf5 20.Rad1 b6 21.h5 Na5 22.Bc1 Nc4 23.Rh3 Kb7 24.g4 Ne7 


25.e6 Bxf3 26.Rxf3 Rd6 27.f5 Rfd8 28.Re1 d4 29.cxd4 Rxd4 30.f6 gxf6 31.Rxf6 Nd6 


32.Rf4 Rd3 33.Rf7 Re8 34.Bxh6 Kc6 35.Rf8 Rxa3 36.Rxe8 Nxe8 37.Bf8 Rxa2+ 38.Kg3 


Although both sides have passed pawns, White's are better placed, and Black's defense is difficult - especially at the end of a 5-minute game.


38...Nd5 39.h6 Ra3+ 40.Bxa3 Black resigned






Wednesday, June 4, 2014

A New Abrahams Jerome Gambit


The following game is typical of Philidor1792: an interesting opening line, pawn play against the extra piece, some sharp tactics - all executed at blitz pace. 

Philidor1792 - guest543

3 0 blitz, www.bereg.ru, 2014

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ 




I have referred to this as the Abrahams Jerome Gambit (see Part I and Part II), after Gerald Abrahams, who, in his The Chess Mind (1951) and The Pan Book of Chess (1965) referred to the line as the Jerome Gambit or Jerome's Gambit. Other authors may have made this attribution, earlier - I would be glad to hear from Readers.


To date, I have not been able to find a game or analysis by Alonzo Wheeler Jerome with the line. My guess is that Abrahams decided that the presence of Bxf7+ was enough to make it Jerome's.


This kind of mis-attribution has occurred before. Joseph Henry Blackburne, in annotating his famous destruction of the Jerome Gambit (see "Nobody Expects the Jerome Gambit!"), referred to it as the "Kentucky Opening".


After some investigation (see "The Kentucky Opening" Parts 1, 23 and 4, as well as "The Kentucky/Danvers Opening"), I ran across analysis of 1.e4 e5 2.Qh5 - "the Kentucky Opening" - published in the Dubuque Chess Journal at around the same time the magazine was introducing the world to the Jerome Gambit 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+. My conclusion


[T]he Queen move in the Jerome Gambit, and the Queen move in the Kentucky Opening are an outstanding – but similar – feature in each opening, something which likely caught Blackburne's eye.


3...Kxf7 4.Qh5+ Kf8 5.Qxe5 d6 6.Qg3 Nf6



7.d3 Nc6 8.c3 Kf7 9.Ne2 Re8 10.f3 d5 11.d4 Bb6 12.e5 Nh5



13.Qf2 g6 14.g4 Ng7 15.Na3 Ne7 16.Nc2 h5 17.h3 Be6 18.Bg5 Qd7 19.Kd2 hxg4 20.hxg4 Rh8 




The position resembles an unusual French Defense Advance Variation!


21.Ne3 c5 22.Qg3 cxd4 23.cxd4 Ba5+ 24.Nc3 Rac8 25.a3 Bb6 26.Nc2 Nc6 


27.Kd3 Na5 28.Raf1 Nc4 29.Bc1 Ba5 30.Ne3 Bxc3 31.bxc3 Qb5 32.Kc2 Qa4+ 33.Kd3 Nxa3 34.f4 Qb3 35.Bd2 Nc4 




White is in trouble, and seeks counterplay against Black's King.


36.f5 gxf5 37.gxf5 Nxd2 


Just the break White was looking for! Now he has a forced checkmate, featuring a Queen sacrifice.


38.fxe6+ Kg8 39.Qxg7+! Kxg7 40.Rhg1+ 




Alas! White is short of time, and goes for the repetition of position and the draw. With a few more seconds he would have found 40.Rfg1+ Kf8 41.Rxh8+ Ke7 42.Rg7+ Kxe6 43.Rh6 checkmate.


40...Kh7


Black, in turn, misses the saving 40...Kh6.


41.Rh1+ Kg8 42.Rhg1+ 


See the note to White's 40th move.


Drawn