Showing posts with label Angstrem. Show all posts
Showing posts with label Angstrem. Show all posts

Saturday, October 16, 2010

Deja Vu for Me (not U)

In this game it was nice to find myself with a familiar opening, a familiar arrangement of pieces – and a familiar "optical illusion" plaguing my opponent...

perrypawnpusher - Padalino
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 Opening.

6.Bxf7+

The Semi-Italian Four Knights Jerome Gambit.

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


8...Bxd4 9.Qxd4 d6 10.f4 Nc6 11.Qd3 Re8 12.Bd2 Kg8 13.Rae1


A typical position for this variation: Black has castled-by-hand while White's Rooks back up his "Jerome pawns". White does not have full compensation for his sacrificed piece.

13...Nb4

A typical blitz oversight for this kind of position: the temptation to "kick" the Queen is too much for Black, as has been seen in:

perrypawnpusher - amirelattar, blitz, FICS, 2010 (1-0, 50)
perrypawnpusher - Angstrem, blitz, FICS, 2010 (0-1, 35)
perrypawnpusher - mjmonday, blitz, FICS, 2010 (1-0, 32)

I am sure that under slower time controls, none of my opponents would have made this error.

14.Qc4+ Be6 15.Qxb4 b6 16.h3 Bf7 17.Qd4 a5 18.Nd5 Nxd5 19.exd5


Black is down a pawn, but the open e-file and unblocked a1-h8 diagonal offer a way to exchange the heavy pieces, after which the Bishops-of-opposite-colors endgame has serious drawing potential. With this in mind, Black might now try 19...Qf6.

19...Qc8

Quickly highlighting the difference between a Bishops-of-opposite-colors endgame and a Bishops-of-opposite-colors middlegame:  the former is drawish, the latter gives the attacking side the advantage.

20.Bc3 Black resigned


It will cost Black a Rook to block the checkmate at g7, but White will have other mates available soon after 20...Re5 21.fxe5. 

Wednesday, October 6, 2010

Slippage

In our previous Jerome Gambit game, my opponent seriously out-played me and well deserved the full point. In this game, I didn't play any better, but my opponent didn't keep pace. 

perrypawnpusher - mjmonday
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...Bxd4 9.Qxd4 d6 10.f4 Nc6 11.Qd3 Re8


Black is very business-like in his play, staying out of mischief and preparing to castle-by-hand.

I also had difficulties after 11...Be6 12.Bd2 Nb4 13.Qg3 Nxc2 14.Rac1 Nd4 15.f5 Bd7 16.Qg6+ Kg8 17.Be3 Be8 18.Qg3 Nc6 19.Bf4 Nh5 20.Qe3 Nxf4 21.Rxf4 Qg5 22.Qf2 Ne5 23.h4 Qh5 24.Rd1 a5 25.f6 Ng4 26.Qg3 Qc5+ 27.Kh1 h5 28.Rxg4 hxg4 29.Qxg4 Rh7 30.Rd5 Qf2 31.h5 Qf1+ 32.Kh2 Qxf6 33.Rf5 Qd4 34.Qf3 Bd7 35.Rd5 Qf6 36.Qxf6 gxf6 37.Kg3 Rg7+ 38.Kf3 Bg4+ 39.Kf4 Be6 40.Rd2 Rg5 White resigned perrypawnpusher - HRoark, blitz FICS, 2010.

12.Bd2 Kg8 13.Rae1 Nb4


All of a sudden my opponent falls for an optical illusion... Attacking that Queen is so tempting.

Instead, 13...Kh8 was just fine for Black, as in perrypawnpusher - DeDaapse, blitz, FICS, 2010 (0-1, 24) and perrypawnpusher - JohnBr, blitz, FICS, 2010 (0-1, 31)

14.Qc4+ d5

Previously I had seen 14...Be6 in perrypawnpusher - Angstrem, blitz, FICS, 2010 (0-1, 35) and perrypawnpusher - amirelattar, blitz, FICS, 2010 (1-0, 50).

15.Qxb4 dxe4

16.Bc1 b6 17.Nxe4 Bb7 18.Nxf6+ Qxf6 19.Bd2 c5 20.Qc4+ Kh8 21.Bc3 Qg6

22.g3

The Bishops-of-opposite-colors are not yet drawish; instead, the player with the attack has the advantage. The move played is a blunder. White should not have further weakened the a8-h1 diagonal, and instead focused upon protecting g2.

22...Qg4

A missed chance: 22...Qc6 is deadly. 

23.Qd3 Rxe1 24.Rxe1 Qh3


This looks like it puts pressure on White's King, but it allows the shot 25.Bxg7+. Too bad I missed it.

25.Qe2 a5

Black continues his play on the light squares, preparing for ...Ba6.

26.Qf2


Totally focused on defending, instead of the mentioned Bxg7+.

26...Kh7

Allowing me to finally bring an end to the game by glueing Black's Rook to g8 and exchanging Queens.

27.Re7 Rg8 28.Rxb7 Qg4 29.Qd2 Qf3 30.Qd3+ Qxd3 31.cxd3 Re8


An oversight.

32.Rxg7+ Black resigned

Saturday, July 31, 2010

Another "Optical Illusion" Variation?



I've already collected too many points from the "Optical Illusion" variation of the Jerome Gambit (see "Optical Illusion (1)" and "Optical Illusion (2)" or the most recent "Disdainful Defender Defense") so I am uneasy about identifying a second position that has been gaining me points for something that my opponents do not see in the position...

perrypawnpusher  - susant
blitz, FICS, 2010

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 h6 5.0-0 Bc5 


The Semi-Italian Four Knights Game.

6.Bxf7+

The Jerome Gambit response. I've slowly raised my score against this unfortunate (for me) line to 57% (still about 30% lower than my general Jerome Gambit score).

7...Kxf7 7.Nxe5+ Nxe5 8.d4 Bxd4 9.Qxd4 d6


White has a pawn for his sacrificed piece. Black is clearly better.

10.f4 Nc6 11.Qd3 Re8 12.Bd2


Now after 12...Kg8 it is hard to see any compensation for White, as Black has even been able to castle-by-hand.

12...Nb4

Absolutely fascinating. Black attacks the Queen – and loses a piece.

Seen previously was the similar: 12...Kg8 13.Rae1 Nb4 14.Qc4+:
perrypawnpusher - amirelattar, blitz, FICS, 2010 (1-0, 50);
perrypawnpusher - pwr, blitz FICS, 2010 (1-0, 38); and
perrypawnpusher - Angstrem, blitz, FICS, 2010 (but 0-1, 35 )

13.Qc4+


Black resigned

The final illusion: Black is losing a piece, but he already has one to give!

After 13...d5 14.Qxb4 Nxe4 the game would simply be even. There was no need for surrender.

Tuesday, June 22, 2010

That Variation

What can I say?

I can handle most variations of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), even the refutation lines, but I keep tripping over the Semi-Italian Four Knights Jerome Gambit – even after my opponent has blundered back a piece to me.

It must be psychological: the loss this time had nothing to do with the opening, I blundered away a Rook in an even ending. For other unfortunate examples of "snatching defeat from the jaws of victory" see "My Turn to Blunder" and "My Turn Again".

perrypawnpusher - Angstrem
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...Bxd4 9.Qxd4 d6 10.f4 Nc6 11.Qd3


The full Queen retreat was seein in ontocaustic - defjavid, FICS, 2009: 11.Qd1 Bg4 12.Qd3 Nb4 13.Qc4+ Kf8 14.Qxb4 Qe7 15.e5 Nh5 16.f5 Qe6 17.fxe6+ Black reigned.

11...Re8

Alternately: 11...Be6 12.Bd2 Nb4 13.Qg3 Nxc2 14.Rac1 Nd4 15.f5 Bd7 16.Qg6+ Kg8 17.Be3 Be8 18.Qg3 Nc6 19.Bf4 Nh5 20.Qe3 Nxf4 21.Rxf4 Qg5 22.Qf2 Ne5 23.h4 Qh5 24.Rd1 a5 25.f6 Ng4 26.Qg3 Qc5+ 27.Kh1 h5 28.Rxg4 hxg4 29.Qxg4 Rh7 30.Rd5 Qf2 31.h5 Qf1+ 32.Kh2 Qxf6 33.Rf5 Qd4 34.Qf3 Bd7 35.Rd5 Qf6 36.Qxf6 gxf6 37.Kg3 Rg7+ 38.Kf3 Bg4+ 39.Kf4 Be6 40.Rd2 Rg5 White resigned, perrypawnpusher - HRoark, blitz FICS, 2010; and


11...Rf8 12.Bd2 Kg8 13.Rae1 Nb4 14.Qc4+ d5 15.Qxb4 Ng4 16.Nxd5 Qh4 17.h3 Nf6 18.Nxf6+ Rxf6 19.e5 Rg6 20.Qb3+ Be6 21.Qf3 Bxh3 22.Rf2 Rg3 23.Qxb7 Rf8 24.e6 Rf6 25.e7 Bd7 26.e8Q+ Bxe8 27.Rxe8+ Kh7 28.Qe4+ Rgg6 29.Qd3 Qg4 30.Ree2 h5 31.f5 Rd6 32.fxg6+ Rxg6 33.Qf5 Qd4 34.Qxh5+ Rh6 35.Bxh6 gxh6 36.Re7+ Kg8 37.Qg6+ Kh8 38.Re8 checkmate, perrypawnpusher - pwr, blitz, FICS, 2010. 

12.Bd2 Kg8 13.Rae1 Nb4


Black has brought his King to safety, and should continue with his development. The text move loses a piece, unless Black prepares it, as he did in perrypawnpusher - JohnBr, blitz, FICS, 2010: 13...Kh8 14.h3 Nb4 15.Qe2 Bd7 16.Bc1 Nfd5 17.Nxd5 Nxd5 18.Qh5 Nf6 19.Qg6 Re6 20.e5 Ng8 21.Qg3 Qe7 22.exd6 cxd6 23.b3 Rxe1 24.Rxe1 Qf7 25.Bb2 Re8 26.Rf1 Nf6 27.Qd3 d5 28.g4 Ne4 29.f5 Qe7 30.Qxd5 Ng5 31.Kg2 Bc6 White resigned

14.Qc4+ Be6 15.Qxb4 c5 16.Qxb7


White should be able to survive his pawn-grabbing, but it complicates the position.

16...Bc4 17.Rf3 a6 18.Nd5 Rb8


19.Nxf6+ Qxf6 20.e5 dxe5

It is possible that Black should have gotten the Queens off the board and gone towards a Bishops-of-opposite-colors endgame, i.e. : 20...Rxb7 21.exf6 Rxe1+ 22.Bxe1 Bxa2 23.b3 gxf6 24.Rd3 Re7 25.Kf2 Bb1 26.Rxd6 Bxc2 27.Rxf6 Bxb3.





analysis diagram






21.fxe5


White did not need this pawn, but he did need to get his Queen off of the diagonal that she shared with his Rook: 21.Qe4.

21...Qh4

A missed opportunity to win the exchange: 21...Qd8 22.Qe4 Bd5

22.Qe4 Qxe4 23.Rxe4


23...Bxa2

The same opportunity to win the exchange existed with 23...Bd5.

24.b3 Bb1 25.Rc3 Red8 26.Be1 Rd1


It looks like Black is whipping up some counter-play, but 27.e6 now for White shows that the first player has the advantage.

By ignoring his e-pawn, White misses chances to put the game away; and the game drifts toward drawn.

27.Kf2 Rf8+ 28.Ke2 Rdd8 29.Ra4 Rfe8


30.Rxc5 Rc8 31.Rxc8 Rxc8


32.Kd2 Bxc2 33.Rxa6 Bxb3


34.Ke2

A blunder in a mostly-even position.

34...Bc4+ 35.Kf3 Bxa6 White resigned

Thursday, April 8, 2010

Technical Difficulties (Part 5)

Just when I was certain that the recent rash of going online chess-playing "technical difficulties" had ended – I was the cause of one, myself.

Pity, it was a good game, and I was winning handily.


perrypawnpusher - Angstrem
blitz 2 12 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+

Of course.

6...Kxf7 7.Nxe5+ Nxe5 8.d4 Bb4


Fascinating.

If you look at Matt Pullin's fine "fork trick" video, which focuses upon a similar strategy in the regular Italian Four Knights Game – 1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Nxe4 4.Nxe4 d5 5.Bb5 –you will see that Angstrem here is using an idea that Pullin refers to as "quite sharp, but bad if Black [in this case, White] knows what to do".

9.dxe5 Nxe4

Now 10.Qg4 would analagous to Pullin's suggestion in the "fork trick", but the move has little meaning with Black's King protecting g7. However, White doesn't have to go that far...

10.Qf3+ Kg8 11.Qxe4


White is now a pawn ahead, with the safer King.

11...c5


12.Nd5 Ba4 13.Be3 b6 14.Rad1


Just putting pressure on the position, although Black's next move allows for a tactical shot.

14...Bb7

15.Nf6+


This is not White's strongest move – that would be 15.c3, intending b2-b4, trapping and winning Black's Bishop in a5 – but it is the most surprising one.

15...gxf6

Better was 15...Qxf6 16.Qxb7 Qc6 17.Rxd7 and White would be a clear two pawns up.

16.Qxb7

There was a checkmate with 16.Qg6+, but I could not work it out in my head at the time:  16...Kf8 17.exf6 d6 18.Bxh6+ Rxh6 19.Qg7 (a nice move I overlooked) Ke8 20.Rfe1+ Bxe1 21.Rxe1+ Be4 22.Rxe4+ Qe7 23.Qxe7 mate.

The move that I played was also good, especially after my opponent's inaccurate reply.

16...fxe5


Here the followup move 17.Rxd7 will win Black's Queen.

However, it was not to be. My wife had gotten up to answer the telephone, and, becoming dizzy, had taken several steps before tripping over our dog, subsequently falling hard to the floor.

Neither of us are young kids any more. I needed to go to her aid, and as a result I lost this game on time. That was unfortunate, but as they say: into each life, some falls must reign...

I messaged my opponent later, to explain my sudden disappearance from the board.