Tuesday, January 24, 2012

My Horse is Faster Than Your Horse



If the finish of the following game can be considered somewhat of a horse race, then it proves to be a mismatch, and a victory for White (and the Jerome Gambit).


mckenna215 - DREWBEAR 63
Jerome Gambit Thematic Tournament
ChessWorld, 2011

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


4...Kxf7 5.Nxe5+ Nxe5 6.d4

This move, as opposed to 6.Qh5+, saw a bit of a revival in this tournament.

6...Bd6


Not a cautious move. mckenna215 scored two points against it in the Thematic Tournament.

7.dxe5 Bxe5 8.Qd5+ Kf8

8...Ke8 9.Qxe5+ Qe7 10.Bf4 Qxe5 11.Bxe5 d6 12.Bxg7 Black resigned, mckenna215 - Magni, Jerome Gambit Thematic Tournament, ChessWorld, 2011.

9.Qxe5 d6 10.Qf4+ Qf6


Perhaps Black is already thinking about finding safety in the endgame: so, off with the Queens!

11.Nc3 Qxf4 12.Bxf4 Nf6 13.0-0-0 Be6 14.Nb5


White's Knight abandons the e-pawn to go in search of larger prey. Black's Knight grabs the pawn, but cannot keep up.

14...Nxe4 15.Nxc7 Nxf2 16.Rhf1

The line-up of pieces on the f-file spell disaster.

16...Nxd1 17.Bxd6+ Black resigned


The double, discovered check assures that White will be a piece (and a pawn) ahead: 17...Kg8 18.Nxa8 h5 19.Kxd1 Kh7 20.Rf8 Rxf8 21.Bxf8

Monday, January 23, 2012

Here... No, There... No, Here... No, There...

The winner of the recent ChessWorld Jerome Gambit Thematic Tournament, AsceticKingK9, won 27 of his 28 games, primarily using the strategy: play ordinary chess until your opponent makes a mistake, apply the pressure, and when he falters, crush him.

The following game is a good example: Black's King keeps finding the wrong square to go to, and that proves lethal.

AsceticKingK9 - Luke Warm
Jerome Gambit Thematic Tournament,
ChessWorld, 2011

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


4...Kxf7 5.Nxe5+ Nxe5 6.d4 Bb4+ 7.c3


For a look at earlier coverage of this move, see "Gloom and Doom" and "On the Sidelines."

7...Bxc3+ 8.Nxc3 Ng6 9.0-0 d6 10.f4 Ke8 11.f5 N6e7 12.Bg5 h6


With his extra King move, Black leveled the game (before that, he was winning) and with this impatient move (curiously, 12...Kf8 might have kept things even) he lets White's Queen in.

13.Qh5+ Kf8

Uncomfortable as it looks, the logical 13...Kd7 14.e5 Qe8 was the way to hang on.

14.f6 gxf6 15.Bxf6 Rh7 16.Bxe7+ Black resigned


The double, discovered check is enough for Black to strike his colors.

Sunday, January 22, 2012

MacGyver

From Wikipedia: "MacGyver is an American action-adventure television series... [S]ecret agent Angus MacGyver... is a resourceful agent with an encyclopedic knowledge of science, able to solve complex problems with everyday materials he finds at hand, along with his ever-present duct tape and Swiss Army knife."

Playing over the following game, I got to thinking about MacGyver.

Bill Wall's opponent had navigated the game into a tricky, but draw-able, Bishops-of-opposite-colors endgame, where it seemed possible that Black might actually extract a half-point from White's Jerome Gambit (a rare event, to be sure).

What did Bill have to work with at the end?

Ah, but it is the "+" on White's last move that gives the win.

Wall,B - CKFM
FICS, 2012

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


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


7.Qd5+ Ke7 8.Qg5+

Something new! There are no other examples in The Database.

Black has a chance to slip, but the game transposes to more "normal" lines.

8... Ke8 9.Qxc5 Qe7 10.Qe3 Nf6 11.Nc3 Kf7



Or 10...d6 11.0-0 Ng4 (11...Be6 12.f4 Ng4 13.Qg3 Qh4 14.Qxh4 Nxh4 15.g3 Nf5 16.exf5 Bxf5 17.Re1+ Kd7 18.d3 Rae8 19.Bd2 c6 20.h3 Black resigned, Wall,B - Hirami,Z, Chess.com, 2011) 12.Qg3 Qe5 13.Nd5 Qxg3 14.fxg3 Kd7 15.Rf7+ Black resigned, Wall,B -CKSP, FICS, 2010.

12.0-0 Re8 13.d3 d5

Giving a pawn back to be able to exchange Queens.

14.Nxd5 Nxd5 15.exd5 Qxe3 16.fxe3+ Kg8


White has three pawns for his sacrificed piece. Perhaps a super-GM like Magnus Carlsen would say that the game here is won for Black, and all that is left is a matter of (his) technique.

In the world of club players, however, it is not naive to see the game as balanced. The winner will be the one who handles his pawns/Knight better.

17.e4 Bg4 18.Be3 a6 19.Rf2 Rad8 20.h3 Bd7 21.Raf1 c6 22.Bb6 Rc8 23.d6

One "Jerome pawn" gets through. The game is still about even, but that's one more thing for Black to worry about, and one more thing for White to rely on.

23...Be6 24.d4 Nf8 25.g4 Bc4 26.Rxf8+


Possibly this Rook sacrifice was a surprise for Black.

26...Rxf8 27.Rxf8+ Rxf8 28.d7 Bxa2

Of course, White will get his Rook back when he promotes the d-pawn, so Black grabs some "compensation."

29.e5 Kf7 30.d8Q Rxd8 31.Bxd8 Ke6


The excellent placement of Black's King makes the Bishops-of-opposite-colors endgame even, even though White has an extra pawn.

32.Kf2 Bb1 33.c3 Ba2 34.Kf3 Kd5 35.Kf4 Ke6 36.Kg5 Kf7 37.h4 Bb1

White looks to see what he can create on the Kingside. If he is able to advance his center two pawns, that will allow Black some counterplay with his remaining 2:1 pawn majority on the Queenside. Eventually White will have to exchange one of his center pawns for a Black wing pawn, and the other White center pawn will be safely blockaded.

38.h5 h6+ 39.Kh4 g6 40.hxg6+ Kxg6 41.e6 Ba2 42.e7 Bf7 43.c4


Things are looking a bit scary for Black right now. Suppose he loses a tempo with 43...Be8. White quickly advances in the center with 44.d5 cxd5 45.cxd5 and has those scary two passers.

But, what would happen next? After 45...Kf7 White can liquidate the Kingside with 46.g5 hxg5+ 47.Kxg5 but now Black starts rolling on the Queenside with 47...a5. Since swapping his Pe7 for the ambitious, but lowly, Pa5 is seriously draw-ish, White's King must persevere with 48.Kf5.

After 48...a4 49.Ke5 b5 50.d6 (50.Kd6 will face the same response) b4 51.Bb6 a3 52.b3 Bc6 53.Bc5 a2 54.Bd4 Bf3 


analysis diagram






Black's and White's advanced passers hold each other hostage and the point can be split, especially after 55.Bb2 Bd1 56.Kc5 Bxb3+.

That kind of pressure, though, searching for that kind of solution, can cause the defender to slip.

43...Kf6 44.e8Q+ Black resigned


The discovered check allows the pawn to Queen safely, and now White can force checkmate.

(Along with his Swiss army knife and duct tape, you had to figure that MacGyver had a discovered check on him, somewhere.)

Saturday, January 21, 2012

Amounting to Very Little...

I have treated the entry of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxc7+) into the pages of the opening "encyclopedias" of its day (see "Jerome Gambit: Early Opening Tomes" Part 1 and Part 2) as a good thing. Certainly, the exposure of the gambit to a greater number of chess players was a positive turn.

Was the opening, however, refined as it passed from one analytical session to the other? Were the best defenses identified and polished? Were White's chances, as thin as they are, clearly identified?

In a word, "no."

Newer books largely copied what was in the older books and passed it along. Critical analysis was almost nonexistent.

True, some authors vied with each other for different ways to say "this opening is no good, but Black must stay awake and do his best or he could embarass himself", but that was about as forward as chess knowledge marched, at least concerning the Jerome Gambit...

I will return to these opening works, but for now, Dear Readers, a break from all this seriousness.

Friday, January 20, 2012

Full Circle (Part 2)

I have been using the line 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.Na3 as the guide for a travelogue around the Jerome Gambit world.

It is worth staying "home" today, to look at Alonzo Wheeler Jerome's analysis, and then examine what Lt. Sorensen did with it.

After 8.d4 Bxd4 9.Na3 two of the three defenses that Jerome presented in his Dubuque Chess Journal article, 9…Ke7 and 9...Ne7 were given as sufficient for Black’s advantage, as they left the second player two pieces up.

Certainly 9...Ke7 10.Qh3 d6 11.Qh4+ Ke8 12.Bg5 Nf6 13.0–0–0 Bb6 14.f4 Ng6 15.Qg3 Nh5 16.Qf3 Qd7 17.f5 Nf6 18.fxg6, as Jerome gave, is not at all promising for White, and 15...h6 instead would have made his prospects even more dismal.

Still, when it was Sorensen's turn, he ignored 9...Ke7.

As for 9...Ne7, Jerome's main line, 10.Qh3 Qf8 11.0–0 Kc6 12.Nb5 Kxb5 13.Qb3+ Kc6 14.Bg5, it looks equally uncomfortable for White.

Sorensen repaired the second line for White by replacing Jerome’s 11.O-O with the consistent 11.Nb5+ which brings danger to Black’s King: 11...Kc5 12.Nxd4 Kxd4 13.Bg5. There are several corrections needed here, though.

First, 13.Qe3+ (not 13.Bg5) is the winning move, leading to mate. The text is an error, as it lets Black find 13...Nf3+, returning a piece to either allow the exhange of Queens or, after 14.gxf3 Kc5, block the White Queen and permit the Black King to escape.

Second, 10...c6 (instead of Jerome's 10...Qf8) stops the White Knight's troublesome leap (Sorensen's 11.Nb5+), showing that 9...Ne7 is good for Black, after all.

The third defense that Jerome gave, 9…Qf6, led to White’s advantage, in his opinion, after 10.Nb5+ Kc5 11.Nxd4 Kd6 12.Nb5+ Kc5 13.Qh3 Kxb5 14.Qb3+. However, this line, too, is a mess.

The position is even after White's 14th move, as he is forcing a draw by repetition.

On his 13th move, Black can show an advantage by playing 13...Nf3+, with ideas similar to the same defensive move in the 9...Ne7 defense.

The big problem for Black in the analysis, as we have seen (i.e. Jerome - Norton, correspondence, 1877) is his 11...Kd6 (instead of Norton's much stronger 11...d6). Jerome gives as a secondary line 11...Qxf5, but it also falls short of the strength of 11...d6.

Sorensen simply copied Jerome’s 9...Qf6 line, giving 10.Nb5+ Kc5 11.Nxd4 Qxf5 12.Nxf5 g6 13.Be3+ Kc6 14.Nd4+ Kd6 15.O-O-O Ke7 16.Nb5 and said “White has the best position” – but this would not be the case after the correct 13…Kb5; or after 12...d6 or 11...d6.

Thursday, January 19, 2012

Full Circle (Part 1)

While Lt. Sorensen's article (see "Early Opening Tomes: Addendum") was making its rounds, Alonzo Wheeler Jerome was learning more about the line that we have been pursuing (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.Na3), and about the dangers of having one's published analysis available for others to crack – as can be learned from the November 24, 1877 issue of News of the Week, that carried a Jerome Gambit correspondence game.

That game can already be found, thanks to Dr. Tim Harding, in "The Jerome - Norton Games (Part 4)", to which can be added the following notes:


Jerome,A - Norton,D
correspondence, 1877

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


4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6


7.Qf5+ Kd6 8.d4 Bxd4 9.Na3


9...Qf6 10.Nb5+ Kc5 11.Nxd4 d6

Instead of Norton's 11...d6 in this game, Jerome's analysis in the Dubuque Chess Journal gave both 11...Qxf5 and 11...Kd6.

Филидор1792's recent game showed 11...Kxe4 to be playable, but very dangerous for Black.

As the News of the Week commentator pointed out, "This move decides the game. White reels from the shock, is henceforth pressed to the wall, and Black has an easy victory."

12.Nb3+ Kb6 13.Qg5 Qxg5 14.Bxg5 Nf6 15.f3 Be6 16.Nd4 Rhe8 17.0-0 c5 18.Nb3 Bxb3 19.cxb3 a5 20.Rfd1 Kc6 21.a4 b6 22.Rd2 Rad8 23.h3 Nf7 24.Bh4 g5 25.Bf2 d5 26.Rad1 dxe4 27.Rxd8 Rxd8 28.Re1 Re8 29.fxe4 Rxe4 30.Rf1 Re6 31.Be3 h6 32.g4 Ne5 33.Bd2 Ne4 34.Bc3 Nxc3 35.bxc3 c4 36.bxc4 Kc5 37.Rb1 Kxc4 38.Rb5 Kxc3 39.Kg2 Nd3 40.h4 gxh4 41.Kh3 Nc5 Black resigned

Wednesday, January 18, 2012

Early Opening Tomes: Addendum

Gathering in all that we have covered in the last week and a half on the Jerome Gambit line 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.Na3 see "An Intriguing Letter" Parts 1, 2 and 3; "Some History of the Jerome Gambit" Parts 1, 2 and 3; and "Jerome Gambit: Early Opening Tomes" Parts 1 and 2 – we see that Alonzo Wheeler Jerome considered 3 responses in his analysis: 9...Ne7, 9...Qf6 and 9...Ke7.

It is time to pause and make an important addition – not from an opening tome, but from a chess magazine.

There was one singular event after Jerome's Dubuque Chess Journal articles were published that gave the gambit incredible exposure, and carried its analysis to those who would later include the attack in their opening books.

The editor of the Dubuque Chess Journal was in the habit of exchanging issues with different chess magazines around the world, and this led to the publication, in the May 1877 issue of Nordisk Skaktidende, a Danish chess magazine, of Lt. Sorensen's column "Skaktheori for Segyndere" ("Chess Theory for Beginners") covering the Jerome Gambit.

The article was translated into (at least) English, Spanish, French and Italian and appeared in chess magazines around the world.

Here is the article, from the English translation in The Chess Player's Chronicle of August 1, 1877 (I have substituted algebraic notation for descriptive.)


Chess Theory for Beginners
by Lieut. Sorensen
(translated from the Nordick Tidende for May.)

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5

With this answering move of the Bishop we have the fundamental position for that good old game which the Italians, hundreds of years ago, when they were masters of the Chess board, called "Giuoco Piano," even game, but the later age, for generality of explanation, the "Italian game." On this basis the usual continuation is 4.c3, whereby the d-pawn at the next move threatens to advance, and the White middle Pawns to occupy the centre.

In the next articles we will make mention of that regular fight for the maintenance or destruction of the centre, which is the essential point of the Italian game; in this, on the contrary, we will occupy ourselves with a Bashi-Bazouk attack, over which the learned Italians would have crossed themselves had they known it came under the idea of piano, but which is in reality of very recent date – 1874, and takes it origin from an American, A.W. Jerome.

It consists in the sacrifice of a piece by 4.Bxf7+.

Naturally we immediately remark that it is unsound, and that Black must obtain the advantage; but the attack is pretty sharp, and Black must take exact care, if he does not wish to go quickly to the dogs. A little analysis of it will, therefore, be highly instructive, not to say necessary, for less practised players, and will be in its right place in our Theory, especially since it is not found in any handbook.

The Americans call the game "Jerome's double opening," an allusion, probably, to the fresh sacrifice of a piece which follows at the next move, but we shall prefer to use the short and sufficiently clear designation, Jerome Gambit.

4.Bxf7+ Kxf7

That the King must take is evident, otherwise the Bishop without any hindrance can retire with his booty.

5.Nxe5+

Once must confess that this is a forcible invention, and difficulties begin now already for Black. There is clearly a choice between two things; between taking, and so maintaining further the preponderance of two pieces, or going with the King, for example, to f8, and being content with the one piece, which, however, has cost two pawns. We will treat these contingencies separately under First and Second Defence.

First Defence

5...Nxe5

White's best move is now 6.d4 or 6.Qh5+. By the first move he wins back one piece quite easily, but when there follows 6...Bxd4, he only receives the scanty recompense of one pawn for the other; by the second move exposes himself to the evil of gaining no piece back, inasmuch as Black can protect himself by 6...Ke6.

According to our conviction, the check with the Queen gives the best chances, and we therefore carry out this, while we point out the result of 6.d4 in the Specimen Game No. 1.

6.Qh5+ Ke6

Black now essays to keep both the pieces, and this must, after the defence adopted, 5...Nxe5, be regarded as consequently the most correct. For if he prefers to interpose the Kt at g6, White plays 7.Qd5+ Ke8 8.Qxc5, and one of the pieces falls under far more unfavorable conditions than if the King had immediatley retreated on the 5th move (Second Defence).

In Specimen Game No. 2 we shall see unfolded some of the inconveniences which the move treated of, 6...Ng6, brings with it.

7.Qf5+ Kd6 8.d4

It is impossible to decide whether this attacking move is stronger than a multitude of others which offer themselves in this interesting position, and of which we expecially 8.f4 and 8.Na3, but it seems clear every case into what abysses Black is plunging.

8...Bxd4 9.Na3 c6

With this move Black escapes; under (a) and (b) are seen less favourable modes of play. (a) 9...Qf6 10.Nb5+ Kc5 11.Nxd4 Qxf5 12.Nxf5 g6 13.Be3+ Kc6 14.Nd4+ Kd6 15.0-0-0 Ke7 16.Nb5 and White has the best position; (b) 9...Ne7 10.Qh3 Qf8 11.Nb5+ Kc5 12.Nxd4 Kxd4 13.Bg5 and White must win.

10.c3 Qf6 11.cxd4 Qxf5 12.exf5 Nf7 13.Bf4+ Ke7

Black must now, though not completely out of danger, be able to make his superiority of a piece and a pawn prevail.


Second Defence

5...Kf8 (best)

Althought the first defence was not thus to be abandoned, we shall still recommend this as more solid, and easier to manage.

6.Nxc6 dxc6 (best)

If 6...bxc6 7.d4 follows, and the Bishop becomes shut out from the game. It is also here of importance to have the open Queen's file.

7.0-0 Nf6 8.Qf3

Upon 8.d4 follows 8...Bg4 9.Qe1 Kf7 and Black is completely extricated, and has the advantage.

8...Qd4 9.d3 Bg4 10.Qg3 Bd6 11.Bf4 g5

This move, which costs a pawn, is not absolutely necessary, but it promotes and energetic liberation of Black's game, which is important in such positions to have in view.

12.Bxd6+ cxd6 13.h3 Be6 14.Qxg5 Rg8 15.Qh6+ Ke7 16.Nc3

The best move to preserve the b-pawn, which is necessary.

16...Rg6 and Black's attack becomes irresistable.




Specimen Game No. 1

6.d4

See the remark upon this under First Defence

6...Bxd4 7.Qxd4 d6 8.0-0 Nf6 9.f4 c5

This move, and the development of the Queen's wing standing in connection with it, we cannot regard as right, at any rate not until all was in order on the King's side. 9...Nc6 eventually followed by ...Re8, would have been the proper continuation, and must have left few favourable chances remaining for White.

10.Qc3 Neg4 11.Nd2 b5 12.h3 h5

Black must now prepare to sacrifice a little, because he did not protect himself in time.

13.e5 (best).

To have taken immediately would not have been near so good; the situation now requires thoroughly attentive play.

13...b4 14.Qf3 Ba6 15.exf6 Bxf1 16.Qb7+

Here 16.hxg4 would also have been good; White, however, plays to drive Black into a mating position.

16...Kxf6 17.Ne4+ Kg6 18.f5+ Kxf5 19.hxg4+ Kg6

With any other move Black is mated in a few moves, or loses the Queen.

20.Ng5

To the sufficiently threatening move 20.Bg5 Black has a good reply in 20...Qb6.

20...Qe8 21.Bd2 (best) Rf8 22.gxh5+ Kxh5 23.Qxg7 Bxg2

In order to avoid the mate threatened in two moves by Qh7 and Qh3.

24.Qh7+ Kg4 25.Re1 and White wins.




Specimen Game No. 2

6...Ng6

See the note to Black's 6th move in First Defense. The reader is now requested to observe for himself the difficulties which we mentioned that this mode of play entails, as we can spare with the subjoined game no space for further notes.

7.Qd5+ Ke8 8.Qxc5 d6 9.Qc3 Nf6 10.d3 c6 11.0-0 Kd7 12.f4 Qb6+ 13.Kh1 Kc7 14.Qe1 Re8 15.b3 Nd5 16.Qg3 Nb4 17.Na3 Bd7 18.c3 Nxa2 19.f5 Ne5 20.d4 Qxb3 21.dxe5 dxe5 22.Rb1 Qxc3 23.Rf3 Qa5 24.Rfb3 b5 25.Rxb5 cxb5 26.Nxb5+ Kc8 27.Nd6+ Kc7 28.Rb7+ Kxd6 29.Qd3+ and White wins