Showing posts with label Pigjuice. Show all posts
Showing posts with label Pigjuice. Show all posts

Sunday, February 27, 2011

Long Lost Cousin?!

Much like the long lost cousin who you wish had stayed lost, the Knight sacrifice in the Exchange Variation of the Ruy Lopez bears a family resemblance to the Jerome Gambit. 
Jerome Gambit

Ruy Lopez Jerome Gambit














Still, as suggested in the notes to Pigjuice - perrypawnpusher, blitz, FICS, 2011, 6...Qxe4+ was stronger than the move played and reduces the resemblance. The following ICCF game, where a 2200+ player is schooled by someone rated over 450 points lower, puts things in perspective.

Christiaens,R (2242) - Dumont,G (1777)
Tournoi Accession 009, ICCF, 2009

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6


The good old Ruy Lopez, Exchange Variation.

Black's coming pawn grab and Knight sacrifice are not considered part of his best defense.

5.Nxe5 Qd4 6.Nxf7


Recommended by Rybka is 6.Nf3 Qxe4+ 7.Qe2 Qxe2+ 8.Kxe2 Be6 9.Re1 0-0-0 10.d3 h6 11.Kf1 Nf6 12.h3 Bd6 13.Nbd2 Rhe8 14.b3 Nd5 15.Nc4 where Black has an edge.

6...Qxe4+

If, instead, the weaker 6...Kxf6, the game takes on a resemblance to the Jerome Gambit after 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5 Kf8 6.Nxc6 dxc6. Amusingly, in the Spanish Game the White Bishop is exchanged on c6 and the Knight is sacrificed on f7, while in the Jerome Gambit the Bishop is sacrificed on f7 and the Knight exchanged on c6.

7.Kf1 Kxf7 8.Nc3 Qf5 9.h3 Bb4 10.a3 Bxc3 11.dxc3 Nf6


White's compensation for the piece is negligible. His timid play hastens the end.

12.b4 Be6 13.Bb2 Bc4+ 14.Kg1 Rad8 15.Qc1 Rhe8 16.Kh2 Re2 17.Re1 Qxf2 18.Rf1 Qxg2 checkmate


I probably will continue to investigate the "Ruy Lopez Jerome Gambit" for historical purposes (and I have added the couple hundred games that I have uncovered to The Database), but after tomorrow's post –  letting a self-styled "hopeless patzer" have the final words – I will not inflict it further upon readers.

Saturday, February 26, 2011

Ruy Lopez Jerome Gambit??


Still puzzled and a bit impressed by the opening that Pigjuice sprung on me yesterday (see "...or should they?") I did a Google search, and much to my surprise ran across the following as part of a discussion of the Exchange Ruy Lopez at ChessGames.com


Nov-13-04 drukenknight: Spanish Exchange (N sack on f7). You know w/ my new "back to the basics" approach to chess, I decided to start looking into the exchange spanish, but it seems pretty freakin stupid. I always want to grab that pawn on e5 but it never seems to work out, but wait a minute! WHy can't white simply sack the N on f7 and gain 2 pawns and go on the attack? What could be more basic than that.....?
"No, stupid moron, you cant do that, no one does that, look here stupid...
1.e4 e5
2.Nf3 Nc6
3.Bb5 a6
4.Bxc6 dxc6
5.Nxe5 Qd4
6.Nxf7 Kxf7
7.Qf3+ Qf6
8.Qb3+ Qe6
9.Qf3+ Nf6
10.d3 Bd6
11.Bf4 Bxf4
12.Qxf4 Qe7
13.00


Errh well maybe it's bad, but hey what about this...?


1.e4 e5
2.Nf3 Nc6
3.Bb5 a6
4.Bxc6 dxc6
5.Nxe5 Qd4
6.Nxf7 Kxf7
7.d3 Nf6
8.c3 Qe5
9.O-O Bd6
10.f4 Qb5
11.e5


chesslab computer takes black and starts rating it at -2.5 (me so stupid) and then comes almost back to equality, that's odd...


Then I tried another version with an insane K march courtesy of the metal monster, don’t ask me I'm even more confused then ever after....


1.e4 e5
2.Nf3 Nc6
3.Bb5 a6
4.Bxc6 dxc6
5.Nxe5 Qd4
6.Nxf7 Kxf7
7.Qf3+ Qf6
8.Qg3 Bd6
9.Qb3+ Kg6
10.h4 Kh5


Maybe evaluation of this depends on how good your computer assistant is.
So maybe the Knight sacrifice in the Ruy Lopez Exchange line 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nxe5 Qd4 6.Nxf7


wasn't something that Pigjuice had made up on the spur of the moment, I wondered.

I checked the FICS games database and found three more games by Pigjuice with that line. Interesting... "Malice aforethought" as they say.

In fact, in the last three months of play at FICS the sac had been played over 200 times. That was "something" but I wasn't exactly sure what kind of "something"  for example, White scored under 20% in those games...

More investigation is needed.



graphic by Jeff Bucchino, the Wizard of Draws

Friday, February 25, 2011

...or should they?

I once wrote that "perhaps not every opening should be Jerome-ized..." I've been re-thinking that: recently an opponent in a 3 0 blitz game found a piece sacrifice that turned that respectable opening into something remarkably Jerome-ish, a trick that gave me quite a headache.

Pigjuice - perrypawnpusher
blitz 3 0, FICS, 2011

1. e4 e5 2. Nf3 Nc6 3. Bb5

The Ruy Lopez, I know. Just wait a few moves.

4...a6 4.Bxc6 dxc6 5.Nxe5

A slip. I think that it was unintentional.

5...Qd4 6.Nxf7

Making things interesting.

6...Kxf7

The resemblance to a Jerome Gambit variation (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Kf8 6.Nxc6 dxc6) is remarkable.


Ruy Lopez

 

Jerome Gambit
 











In the Ruy Lopez White's Bishop was exchanged on c6 and his Knight was sacrificed on f7. In the Jerome Gambit, the Knight was exchanged on c6 and the Bishop was sacrificed on f7. You can not see the difference.

I do not think that having his Queen developed instead of his Bishop is an improvement for Black over the Jerome line. Having the King on f7 instead of f8 is probably helpful in terms of castling-by-hand.

The facts were clear, though: I was now defending a Jerome Gambit (I'll think about calling it a "Ruy Lopez Jerome Gambit" later) – and my clock was ticking.

7.Qf3+ Qf6

An endgame – without White's attacking Queen – appealed to me, but 7... Nf6 was probably better. My opponent was not interested.

8.Qb3+ Qe6 9.Qf3+ Nf6



10.Nc3 Bb4 11.d3 Rf8 12.Bd2 Kg8


13.O-O Qg4 14.Qe3 Bd7 15.a3 Bd6 16. Ne2 Rae8


I was holding my own, although after the game Fritz10 suggested 16...Nd5 17.Qg5 (if 17.exd5 Rae8) 17...Qxe2 18.Rae1 Qg4 19.exd5 Qxg5 20.Bxg5 cxd5 as a way to a comfortable Queenless middlegame.

The next move I had a similar idea, but it did not work out as well.

17.Ng3 Nd5 18.Qa7 Bc8

Overlooking a couple of things.

19.exd5

That was one of them: dropping a piece. Now I was down a pawn with less than a minute to play, no increment.

The other thing? The pawn that I protected was not worth it, as 18...Nb6 would have shown: 19.Qxb7 Rb8 20.Qxa6 Ra8 21.Qb7 Rfb7 and the Queen is lost.

19...cxd5 20.f3 Qg6 21.Qf2 Bxg3 22.Qxg3 Qxg3 23.hxg3 c6


I callously planned on reaching a Bishops-of-opposite-colors endgame that I could shuffle pieces in quickly – important, as I not only had little time left, I had less than my opponent.

24.Rae1 Rxe1 25.Rxe1 Kf7 26.f4 Re8 27.Rxe8 Kxe8


If time were not an issue, we probably would have split the point here, and I would have congratulated my opponent – rated 200 points below me – on his opening play creativity.

I was ready to very quickly do "nothing". My opponent's downfall was that he was trying to quickly do "something."

28.Bc3 g6 29.Bg7 h5 30.Bh6 Kf7 31.Bg5 Ke6 32.Kf2 Kf5 33.Ke3 Be6 34.c3 a5 35.d4 a4 36.Kd3 b5


Don't go away quite yet. There are some interesting positions to come.

37.Kc2 Kg4 38.b3

I was pleased to see my opponent "thinking" instead of "shuffling". Thinking takes more time.

38...axb3+ 39.Kxb3 Kxg3 40.a4 bxa4+ 41.Kxa4 Kxg2 42.Kb4 Kg3

In Bishops-of-opposite-colors endgames the blockade of enemy pawns by both Bishop and King is essential. I realized that White's King excursion gave me a chance to un-blockade my Kingside pawns and I squeezed a few thoughts out of my brain...

43.Kc5 Bd7

More straight-forward, winning White's Bishop, was 43...h4, although it needed some precision: 44.Bxh4+ Kxh4 45.Kxc6 Kg4 46.Kd6 Kf5! Instead, if Black abandons his Bishop to go directly to Queening a pawn he gets his wish, but after 46...Kxf4 47.Kxe6 g5 48.c4 dxc4 49.d5 c3 50.d6 c2 51.d7 c1=Q 52.d8=Q the Q + K + P vs Q + K endgame takes a whole lot of moves – and time to win.

44.Kd6 Be8

I was ahead of my opponent in time (what was left of it) here, but thinking was still a precious commodity. It seemed like time to abandon my Bishop and win Pigjuice's.

45.Ke7 h4 46.Kxe8

Giving up the Bishop first with 46.Bxh4+ leads to the kind of endgame that I was familiar with and had won on several occasions: 46...Kxh4 47.Kxe8 Kg3 48.Kd7 Kxf4 49.Kxc6 g5 50.Kxd5 g4 51.Kc6 g3 52.d5 g2 53.d6 g1=Q 54.d7 Qg5 – Black's Queen holds the advanced pawn and when Black's King joins the fight, the pawns will be won and then the enemy King checkmated.

Still, that would take moves, thinking, and time – more by Black than White, it seems  so it was probably White's more practical chance. Now, Black's pawn can promote.

46...h3

47.f5

The same idea, without giving up the f-pawn, would arise after 47.Bd8 h2 48.Bc7 h1=Q 49.f5+ Kg4 50.fxg6 although, like in the note to White's 46th move, Black's Queen and King can control White's passer:  50...Qh6 51.Kf7 Kf5 52.g7 Qe6+ 53.Kf8 Qc8+ 54.Kf7 Qxc7+ 55.Kf8 Qd8+ 56.Kf7 Qf6+ 57.Kg8 Kg6.

The cooperation between Black's Queen and King is worth knowing about for this kind of ending.

47... gxf5 48.Bf6 h2 49.Be5+ f4 White forfeited on time



Whew!

Hats off and a deep bow of respect to my opponent.