Saturday, July 17, 2010

Once A Year

I was wandering through the updated New Years Database and noticed that about once a year someone playing the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) makes a particular unfortunate oversight and gets crushed...

drumme - Cascagians
blitz, FICS, 2010

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


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


6...Qf6 7.dxe5 Qxf2 checkmate 


Last year the same moves (and result) showed up in Nusiance - acuriel, blitz FICS 2009.

Two years ago, the Black Queen went to h4, instead, with the same outcome: 6...Qh4 7.dxe5 Qxf2 checkmate, stretto - DjinnKahn, FICS, 2008.

Take care: Forwarned is forarmed!

Friday, July 16, 2010

Halo Effect


When people notice a good trait in a person, they often assume other positives. With the Jerome Gambit  often a negative "halo effect" occurs – if the early moves are bad, many of the other ones must be bad, too.

perrypawnpusher  - dkahnd
blitz, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 


4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8


7.Qxe5 d6 8.Qg3 Qe7


Starting the counter-attack in the center.

9.Nc3

Alternatives: 9.d3 d5 (9...Nf6 10.0-0 Qe5 11.Qf3 Bg4 12.Qg3 Qxg3 13.hxg3 Ke7 14.c3 Be2 15.Re1 Bxd3 16.e5 Ng4 17.exd6+ Kxd6 18.Be3 Nxe3 19.fxe3 Ke6 20.Nd2 Rad8 21.Kh2 Rhf8 22.Nf3 Rf6 23.e4 Rh6+ 24.Nh4 g5 25.Rad1 gxh4 26.g4 Bd6+ 27.Kh3 Bb5 28.Rd4 Bg3 29.Red1 Rxd4 30.cxd4 Bd7 31.b3 Rg6 32.e5 h5 White resigned, Petasluk - pawnloss, FICS 2006) 10.0-0 dxe4 11.Re1 Qd6 12.Bf4 Qd4 13.Be5 Qd7 14.Rxe4 Qf5 15.Qxg7+ Ke8 16.Bg3+ Qxe4 17.dxe4 Black resigned, perrypawnpusher - frencheng, blitz, FICS, 2010.

9...Nf6 10.d3 Ng4


Here comes the counter-attack on f2 again (see "Frying Pan Minus Perspective Equals Fire").

Two different courses of play: 10...b6 11.Na4 Bb4+ 12.c3 b5 13.cxb4 bxa4 14.Bd2 Qe5 15.Qxe5 dxe5 16.Rc1 Ne8 17.Bc3 Be6 18.a3 Rd8 19.Ke2 Nd6 20.Bxe5 Nb5 21.Bxc7 Nxc7 22.Rxc7 Bd7 23.Rxa7 Ke7 24.Rc1 Rc8 25.Rac7 Rxc7 26.Rxc7 Rc8 27.Rxc8 Bxc8 28.Ke3 h6 29.Kd4 Kd6 30.f4 g6 31.Kc3 Ba6 32.d4 Bf1 33.g3 Bg2 34.e5+ Kd5 35.b5 Ke6 36.Kb4 Kd7 37.Kxa4 Bh3 38.Ka5 Kc7 39.b6+ Kb7 40.d5 Bg2 41.d6 Bh3 42.Kb5 Bd7+ 43.Kc5 Be6 44.a4 h5 45.b4 Black resigned, levigun - dmyze, GameKnot.com, 2004; and

10...h6 11.Be3 Bxe3 12.fxe3 Qe5 13.Qxe5 dxe5 14.Rf1 Ke7 15.Nd5+ Nxd5 16.exd5 Bd7 17.Rf2 Rhf8 18.Rxf8 Rxf8 19.Ke2 Bg4+ 20.Ke1 g5 21.c4 Kd6 22.b4 b6 23.a3 a6 24.Ra2 Bf5 25.Rf2 Ke7 26.e4 Bg4 27.Rxf8 Kxf8 28.Kd2 Ke7 29.d4 exd4 30.Kd3 Kd6 31.Kxd4 c5+ 32.dxc6 Kxc6 33.c5 bxc5+ 34.bxc5 h5 35.g3 h4 36.gxh4 gxh4 37.Ke5 Kxc5 38.Kf4 Bd7 39.h3 Bxh3 40.Kg5 Bg2 41.Kxh4 Bxe4 42.Kg4 a5 43.Kf4 Bc2 44.Ke3 Kc4 45.Kd2 Kb3 46.a4 Kb2 47.Ke1 Bxa4 48.Kd2 Bc2 White resigned, rhoadarmer - partha, Gameknot.com, 2006.

11.0-0 Ke8 12.Nd5 Qf7


Black continues his preparations even though the game has leveled out. 

13.h3

More to the point, as with perrypawnpusher - marianomocoroa, blitz, FICS 1020, was 13.Be3.

13...Nxf2

This is an error that 14.Be3 would have pointed out – just because White's early moves were bad doesn't make all of his other moves, or his position now, bad.

13...Rxf2 Rf8


Consistent, but 13...Bxf2+ 14.Qxf2 Qxf2+ 15.Kxf2 Rf8+ 16.Kg3 Rf7 18.Be3 would have given Black a position with the exchange for a pawn. Now White recovers.

15.Be3 Bxe3 16.Qxe3 Qd7


17.Rxf8+ Kxf8 18.Rf1+ Kg8 19.Qf3


Even stronger was 19.Qg5, when Black will have to give up his Queen (e.g. 19...h6 20.Qg6 Qe6 21.Nf6+ Qxf6 22.Rxf6) to avoid checkmate.

19...Qd8 20.Qf7+ Black resigned

Thursday, July 15, 2010

Frying Pan Minus Perspective Equals Fire

In the following game Black has a new idea in the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) 5...Kf8 defense. It is dynamic and sound, but quick play leads to a quicker end for the second player.

perrypawnpusher  - marianomocoroa
blitz, FICS, 2010

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


4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8


A solid defensive choice.

7.Qxe5 d6 8.Qg3 Nf6 9.d3 Ng4


Black is happy with his King's safety, and instead of looking to castle-by-hand (with 9...Kf7) he immediately counter-attacks. There are no examples of this move in the updated New Year's Database, but there should be.

10.0-0 Qf6 11.Nc3 c6


12.Be3 Nxe3

An interesting continuation of the attack would be 12...h5!?

A routine continuation of the attack would be 12...Bb6.

Instead, confident at being higher-rated than me and certain that the refuted Jerome Gambit can be quickly wiped from the board, Black errs.

13.fxe3


The kind of thing that happens in blitz play.

12...Bf5

Panic, but 13...Ke8 14.Rxf6 gxf6 15.d4 leaves White with a Queen and a couple of pawns against a Rook and Bishop – and vulnerable King.

14.Rxf5 Black resigned

Wednesday, July 14, 2010

Ms. Jerome Gambit Killer

As given in an earlier blog post (see "Les Femmes des Echecs... & the Jerome Gambit") I lost my first Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) in a 3 0 game at FICS:  perrypawnpusher - MsD, blitz, FICS, 2009.

The other day I was wondering if MsD had played against other Jerome Gambits and other Jerome-ish openings, so I checked out the updated New Year's Database.  I was quite impressed by what I found: in 35 games, she had accumulated 33 wins and 2 losses, scoring 96%!

Here is one example.

Daisuke - MsD
blitz, FICS, 2008

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


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


6...Bxd4 7.Qxd4 d6 8.0-0 Nf6 9.Bg5 Be6 10.f4 Nc6


11.Qe3 Rf8 12.e5 dxe5 13.fxe5 Qd4


14.Qxd4 Nxd4 15.exf6 Nxc2 16.fxg7+ Kxg7 White resigned


graphic by Jeff Bucchino, the Wizard of Draws



Tuesday, July 13, 2010

More Than Seen At First Glance (Part 2)

The following game has another drawish-looking endgame that is more than meets the eye. Finding those "extra" half-points that don't seem there at first is an important part of improving in chess play.



 
perrypawnpusher - catri
blitz, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 h6


The Semi-Italian Opening.

4.0-0 Nf6 5.Nc3 Bc5


The Semi-Italian Four Knights Game.

6.Bxf7+


The Semi-Italian Four Knights Jerome Gambit.

6...Kxf7 7.Nxe5+ Nxe5 8.d4


8...Re8

Fascinating!

This is a defense that I've not seen before, although there are a few similar games in my database in games without ...h6 and 0-0.

When you are up two pieces, as Black is, there are so many ways to play the opening!

9.dxc5 b6


Black can keep his advantage with 9...Qe7, but he wants to develop his Queen Bishop.

10.cxb6 axb6 11.f4 Ba6


This is Black's idea, but it is tactically suspect.

12.fxe5 Rxe5 13.Re1 c6 14.Bf4 Rc5


Black wants to keep his Rook "active," but it was safer and more effective at Re6.

White gets a chance to take over the game. 

15.e5 Nd5 16.Nxd5 Rxd5 17.Qh5+ Kg8


When a sufficient advantage has been obtained, a player must attack or the advantage will be dissipated said Steinitz.

White now has 18.Bxh6 gxh6 19.Qg6+ Kh8 20.Qxh6+ Kg8 21.Re3 and he will win. Black defends better with 18...Rd4, but then White can play 19.Bxg7 Kxg7 20.Re3 with similar play. Again, Black can defend instead with 19...Qh4, but White can just exchange Queens and then withdraw his Bishop, having gained two pawns.

18.Rad1

Playing positionally instead of tactically, focusing on the "hole" in Black's positon at d6. White still has a small advantage.

18...b5


It is hard to understand why Black chose this over the simple exchange of Rooks.

19.Rxd5

A bigger advantage was to be found with 19.Bxh6 as above.

I have a tendency to substitue "strategic" moves for analysis and tactical shots.

19...cxd5 20.g4

It is ironic that this "attacking" move surrenders White's advantage, while the "positional" move 20.Qd1 kept it. I was seriously out of synch with the needs of my game at this point.

20...Qb6+ 21.Be3 Qe6

Better was 21...d4.

22.Qf5 Rf8 23.Qxe6+ dxe6 24.Rf1 Rxf1+ 25.Kxf1


This game has taken on the tone of the previous one (see "More Than Seen At First Glance Part 1") – chosing to reduce the game to a pawn-up Bishops-of-opposite-colors endgame with the overheated belief that I can out-play my opponent...

25...b4+ 26.Ke1 Kf7 27.Kd2 Kg6 28.a3


Stronger was 28.Bc5 Kg5 29.Bxb4 Kxg4 30.a4 although Black's Kingside pawns looked dangerous.

28...bxa3 29.bxa3 h5 30.gxh5+ Kxh5 31.Bf4 g5 32.Bg3 Kg4


This looks like a typical Bishops-of-opposite-colors endgame – but is it?

At this point it looks like Black's King can get over to the Queenside in time to blockade White's a-pawn, but first it will be wise to slow its advance with 33...Bb5

33.Ke3 Kf5 34.Kd4

White needed to take advantage of his opportunity and play 34.a4 with a good chance that his King could then advance on the Queenside, and eventually win Black's Bishop for the a-pawn.

34...Bc4 35.a4


Now White should have a win – if he sees it.

35...g4 36.a5 Ba6



37.c3 Bc4 38.Ke3


Totally missing the winning opportunity presented by 38.Kc5.

38...Ba6 39.Kd4 Bc4 40.Ke3

Oh, no, I did it again!

40...Ba6 41.Kd4 Bc4 42.Ke3

And again. An advantage isn't an advantage if you don't take advantage of it...


Game drawn by repetition.

Oh, well: yesterday I won a drawn  position, today I drew a won position. I guess it balances out...





Monday, July 12, 2010

You Never Know...

When my opponents slip up early against the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) I never know if it is because they are terrified, of if they are laughing so hard that they don't pay proper attention...

Either way, the game can be over almost before it's even begun (see "Let the Guilt-a-thon Continue").

perrypawnpusher - anonymous
blitz, FICS, 2010

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


4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke7


I have never seen this move before. There are no examples in my database.

7.Qxe5+ Black resigned


White gets back both sacrificed pieces, remaining up two pawns against an uncastled King. If only every Jerome Gambit were this successful!



Sunday, July 11, 2010

More Than Seen At First Glance (Part 1)

The following Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) game starts quietly. Black's defense is a "refutation" only in the sense that my opponent (rated a few points above me) was content with a draw, so I had to struggle if I wanted more.

Fortunately I found something to complicate things and eventually give me the full point.

perrypawnpusher - obmanovichhh
blitz, FICS, 2010

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


The Italian Four Knights Game.

5.Bxf7+


The Italian Four Knights Jerome Gambit.

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

An unusual but certainly playable defense. Including this game, the updated New Year's Database has 26 examples of this position, with White scoring 65%.

Stronger for Black, though, was 7...Bd6 8.0-0 Nc6 9.f4 Be7.

8.dxe5 Bxc3+ 9.bxc3


If Black keeps his wits about him, he can now play 9...Re8, giving back the piece but reaching a safe, even position where he has play against White's weakened pawns: 10.exf6 Rxe4+ 11.Be3 Qxf6

9...Nxe4 10.Qd5+ Kf8 11.Qxe4 d6


White is a pawn up – a situation that is always psychologically uneasy for me, as I feel like I've "escaped" in another Jerome Gambit, and I tend to play vapid moves that lead to even (or worse) positions. (Brian Wall may have a valid insight into this.)

12.0-0 dxe5



I am convinced that my opponent was already thinking about reaching a drawn endgame here. I was willing to go along with him, and hoped to out-play him – a notion that obmanovichhh would probably have scoffed at.

The fact is that we both missed 13.Ba3+ here, when the position becomes anything-but-drawish: 13...Kf7 14.f4 (to open more lines for attack) Be6 15.fxe5+ Kg8 and White wins Black's Queen with 16.Rf8+ Qxf8 17.Bxf8 Rxf8.




analysis diagram







White's Queen can now go munching on Black's pawns.

13.Qxe5 Qe7 14.Bf4


Again, too accomodating of Black's plan – I thought that I knew what I was doing – when there was a stronger option available.

After the game Stockfish showed that White could have shaken things up with the piece sacrifice 14.Ba3!? as after 14...Qxa3 15.Rfe1 Bd7 16.Qxc7 Bc6 17.Rad1 he would have had a very strong position, with the possible continuation 17...h6 18.Rd8+ Rxd8 19.Qxd8+ Kf7 20.Qxh8 when White is up the exchange. 

14...Qxe5 15.Bxe5 c6


For the next 15 or so moves, White and Black play cooperative chess: we both aim for a Bishops-of-opposite-colors endgame that I think that I can win, and that my opponent thinks that he can draw.

There is another factor in play, however – we'll get to that later.

16.Rad1 Bf5 17.Rd2 Kf7 18.Rfd1 Rhe8 19.f4 Re6 20.Rd8 Rxd8 21.Rxd8 Re7 22.Rd2 g5 23.g3 gxf4 24.gxf4 Be6


Each side will put pawns on squares the same color as their Bishop, the Kings and Rooks will help in the blockade of the enemy pawns, and all will be peaceful in the world...

25.a3 Bc4 26.Kf2 b5 27.Ke3 a5 28.Rd6 Bd5 29.Rh6 Kg8 30.Kd4 a4 31.Kc5 Be4


Black has reached the position that he has been aiming at for a long time. So have I.

32.Rxc6

Surprise!

Truth be told, after this sacrifice the game is still drawn – but it is tough work for Black, made tougher by the blitz time control.

32...Bxc6 33.Kxc6 Re6+


Instead, according to Rybka and Stockfish, if Black centralizes his King to blockade White's passed f-pawn, and maneuvers his Rook to pin the Black King to the a-file in front of the passed a-pawn, then it doesn't matter if he loses all but one of his pawns: 33...Kf7 34.Kxb5 Rb7+ 35.Kxa4 Ke6.




analysis diagram








White will not be able to make progress.

34.Kxb5 Rh6


This also leads to a draw, but not an easily seen one.

35.c4 Kf7 36.c5

 

Now if Black can scoop up the two lagging pawns with 36...Rxh2 37.c6 Rxc2 and keep his Rook on the c-file to capture the White pawn when it Queens, he actually would have winning chances after 38.c7? Ke6 39. Kb5 h5! as White cannot stop the Black h-pawn.





analysis diagram







Instead of 38.c7?, White has to find 38.f5! when his Bishop will be free to stop the Black h-pawn and his f-pawn does not allow Black's King to wander too far from the center.

A reasonable continuation might look like 38...Rc1 (keeping an eye on the passer) 39.Bd6 (threatening to block the Rook's access to White's c-pawn, and possibly able to block checks along the b-file) Ke8 40.f6 Rf1 (Black's King and Rook are working well together in frantic times) 41.Be7 (safeguarding the f-pawn) h5 (to the rescue!) 42.Kb6 Rb1+ 43.Bb4 Rf1 44.Kb7 Rc1 45.c7 Kd7 46.Ba5 Ke6 (Black abandons his Rook in favor of capturing White's f-pawn) 47.c8/Q+ Rxc8 48.Kxc8 Kxf6




analysis diagram








– and suddenly, miracle of miracles, Black realizes that it no longer matters if he loses his last two pawns, as the game will enter the notorious "Rook pawn plus wrong Bishop" endgame, which is a draw. (Of course, if Black greedily tries to win the Bishop for his h-pawn, White will queen his a-pawn and win.)

I didn't realize that the endgame was that complicated, but I did think it would "set problems" for my opponent.

36...Ke6


37.c6 Ke7

Black can no longer count on 37...Rxh2, as White has 38.c4!? to help guard his advanced (and advancing) c-pawn.

Black can try the swindle 38...Rh3!? hoping for a King move by White, but 39.f5! wins for the first player, as in 39...Ke7 40.f6+ when one of the passers will Queen, for example: 40...Kd8 41.Kc5 Rd3 42.Bd6 Rf3 43.Be7+ Kc8 44.Kd6 Rf1 45.Ke6 Re1+ 46.Kf7 Kc7 47.Ke8 Kxc6 48.f7 Rf1 49.f8/Q+ Rxf8 50.Bxf8 and White's extra pawn makes all the difference in the world compared to the above analysis.






analysis diagram






38.Kb6


My turn to slip: this activates 38...Rxh2 as a drawing strategy, much as in the analysis after White's 37th move (for one thing, c2-c4 doesn't work as a shield as White's King is too far advanced) – ending up as before with a Rook Pawn plus wrong Bishop endgame for White.

White's winning move was therefore 38.h4!? which cannot be answered by 38...Rxh4?! because of 39.Bf6+! Kxf6 40.c7 and the pawn will Queen. Black defends better with 38...Kd8, but White can slowly advance his forces and win, e.g. 39.Kc5 Rh5 40.c4 Kc8 41.Kd5 Kd8 42.Ke4!? Rh6 43.f5 and either 43...Rxc6 or 43...Rxh4+ will be answered by 44.Kd5 and the Bishop pawns will continue to advance...

38...Kd8

Missing his last chance (38...Rxh2).

39.Kb7


At this point my opponent disconnected and was forfeited. He has to give up his Rook for the advanced c-pawn, and the ending thereafter would not be difficult for me to win.