Showing posts with label tampajake. Show all posts
Showing posts with label tampajake. Show all posts

Friday, March 31, 2017

Blackburne Shilling Jerome Gambit: Black Runs Out of Energy



In the following game Black is vigorous in his response to White's gambit. However, he seems to run out of energy at the end. Is being down 5 pawns for a piece reason enough to resign? In this case, perhaps not: Stockfish 8 evaluates the final position as even.

Wall, Bill - NN
lichess.org, 2016

 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4


The Blackburne Shilling Gambit.

4. Bxf7+

The Blackburne Shilling Jerome Gambit.

4...Kxf7 5.Nxe5+ Ke8 6.Qh5+ g6 7.Nxg6 hxg6 8.Qxg6+


8.Qxh8 is a mistake, but I once managed to win with it anyhow, perrypawnpusher - tampajake, FICS, 2009 (1-0, 12).

8...Ke7 9.Qg5+ Nf6

Better than 9...Ke8 in perrypawnpusher - adamzzzz, FICS, 2009 (1-0, 39).

10.Qc5+

Better than 10.e5 in perrypawnpusher - JokeritT, FICS, 2010 (1-0, 28).

10...Kf7

I faced 10...d6 in a number of games; perrypawnpusher - foreverblackman, FICS, 2010 (1-0, 21); perrypawnpusher - vlas, FICS, 2010 (0-1, 23); perrypawnpusher - theferno, FICS, 2010 (1-0, 28); perrypawnpusher - Raankh, FICS, 2010 (1-0, 49); and perrypawnpusher - michon, FICS, 2015 (1-0, 36). Bill, too: Wall,B - Guest5170841, PlayChess.com 2015 (1-0, 15 ).

11.Qxd4 Qe8 12.Nc3 c5 13.Qe3 Qe5 14.h3 Bh6 15.Qf3 Qf4 16.Qe2 d6

Black is fighting back vigorously, despite his slightly exposed King. Still, I am always suspicious of ...c5 in these kinds of positions, as it can allow further opening of the game.

17.d4 Qh4 18.Bxh6 Qxh6 19.dxc5 dxc5 20.e5 Nh5 


Here Stockfish 8 recommends 21.g4!? which is not the kind of move that I can see Bill choosing, as it seems to give even more exposure to his King. Yet the followup is ironic enough for him to appreciate: 21...Nf4 22.Qf3 Kg7 23.0-0-0 (made possible by the Knight's block of the Queen's diagonal) Ne2+ 24.Kb1 Nxc3 25.Qxc3 Be6 with an advantage to White after he captures the c-pawn.

21.Qc4+ Be6 22.Qxc5 Black resigned


Interesting. Compared to Stockfish 8's analysis above, the Knights are still on the board, which would slightly favor White's better piece. However, White's King is not castled, which could be quite risky. 22...Rhd8 would seem to guard well against White's possible Queen check at c7.

In a human vs human game, however, in the long run I would take the extra pawns over the extra piece. It would appear that Black agreed. 

Tuesday, July 7, 2015

A Discussion Continued


After this game was finished, I checked with The Database, and discovered that my opponent and I had "discussed" this opening (over the board) several times previously.

In addition, before I post a game on this blog, I usually "discuss" it with either Houdini 3 or Stockfish 6, hoping for enlightenment.


This time, however, my two electronic "friends" did not always agree in the early stages, occasionally sounding like a couple of know-it-all kibitzers, leaving a current assessment of the opening lines a bit unsettled.


Ironically, the game was tipped by the endgame play of both me and my opponent - as HAL 9000 once said, "It can only be attributable to human error."


perrypawnpusher - michon

blitz, FICS, 2015

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+ 




The Blackburne Shilling Jerome Gambit.


4...Kxf7 


My opponent declined the piece a couple of times, a couple of years ago, with 4...Ke7, but without success: perrypawnpusher - michon, blitz, FICS, 2013 (1-0, 8) and perrypawnpusher - michon, blitz, FICS, 2013 (1-0, 41). 


5.Nxe5+ Ke8 


Instead, 5...Ke6 was seen in perrypawnpusher - michon, blitz, FICS, 2014 (1-0, 23); while 5...Ke7 was seen in perrypawnpusher - michon, blitz, FICS, 2013 (1-0,18). 


6.Qh5+


This move was preferred by Houdini 3 after some deep thought.


Some human input: In over 70% of the over-2,100 relevant Blackburne Shilling Jerome Gambit games in The Database, White chose 6.Qh5+, scoring 60%.


Instead, Stockfish 6 preferred 6.c3.


Again: In 21% of the relevant Blackburne Shilling Jerome Gambit games in The Database, 6.c3, was the people's choice, scoring 55%.


I checked, and noticed that 6.c3 was first mentioned on this blog in "Blackburne Shilling Jerome Gambit", 7 years ago.


Interestingly, an earlier version of Stockfish expressed a preference for 6.c3 about 5 years ago.


The choice of 6.Qa5+ or 6.c3 still seens to be an "Unfinished Discussion" (posted 3 years ago), although it seems that 6.c3 may have appeared in more blog posts than 6.Qh5+.


Here are a couple of examples of the 6.c3 Nc6 7.Nxc6 dxc6 8.d4 Qh4 line suggested by Stockfish 6: 9.0-0 (9.g3 Qxe4+ 10.Qe2 Qxe2+ 11.Kxe2 Bg4+ 12.f3 Bf5 13.Re1 Bxb1 14.Kf1+ Be7 15.Rxb1 Kd7 16.Re2 Re8 17.Be3 Nf6 18.c4 Rhf8 19.b4 Ng4 20.Kg2 Nxe3+ 21.Rxe3 Bxb4 22.Rxe8 Rxe8 23.Rxb4 Re2+ 24.Kh3 Rxa2 25.Rxb7 Ra4 26.Kg4 Rxc4 27.Rxa7 Rxd4+ 28.f4 c5 29.Ra8 c4 30.Rh8 c3 31.Rxh7 c2 32.Rxg7+ Kc6 33.Rg6+ Rd6 34.f5 c1Q 35.Rxd6+ cxd6 36.f6 Qc4+ 37.Kf5 Qf1+ 38.Ke6 Qh3+ 39.Ke7 Qd7+ 40.Kf8 d5 41.f7 d4 42.Kg8 Qg4+ 43.Kh8 Qh5+ 44.Kg8 Qg6+ 45.Kf8 d3 46.Ke7 Qxf7+ 47.Kxf7 d2 48.h4 d1Q 49.h5 Qxh5+ White resigned, marinrouge - homerg, FICS, 2002) 9...Ke7 10.Nd2 Nh6 11.Nf3 Qh5 12.Qd3 Kd8 13.Bg5+ Be7 14.Bxh6 gxh6 15.Ne5 Bd6 16.Qg3 Be6 17.f4 Bxe5 18.fxe5 Rg8 19.Qf3 Bg4 20.Qf7 Qxf7 21.Rxf7 Kc8 22.Kh1 b6 23.Raf1 Kb7 24.Rxh7 h5 25.Rff7 Rac8 26.d5 cxd5 27.exd5 Be2 28.d6 Rgf8 29.Rxc7+ Rxc7 30.Rxc7+ Ka6 31.h3 h4 32.Kh2 Bb5 33.Rg7 Bc6 34.e6 b5 35.d7 Rf6 36.Re7 Bd5 37.d8Q Rg6 38.Qc8+ Ka5 39.Qc7+ Ka4 40.Rg7 Rxg7 41.Qxg7 a5 42.Qd4+ b4 43.cxb4 Black lost on time, dzomba - VendettaA, lightning [!], FICS, 2006. 


6...g6 7.Nxg6 


7...hxg6 


Here we have another dispute.


Stockfish 6 prefers 7...Nxc2+, suggesting that after 8.Kd1 hxg6 (8...Nxa1? 9.Nxh8+ Ke7 10.Qe5#) 9.Qxg6+ Ke7 10.Qg5+ (Houdini prefers 10.Kxc2 with an edge for White) 10...Ke8 11.Qg6+ Ke7 12.Qg5+ White draws by repeating the position (Houdini prefers 12.Kxc2 with an edge for White).


8.Qxg6+


A number of years ago I got away with the weaker 8.Qxh8?! after 8...Nh6 when 8...Nxc2+, instead, would have led to an edge (Houdini) or an advantage (Stockfish 6) for Black after 9.Kd1 Nxa1 10.Qxg8 in perrypawnpusher - tampajake, blitz, FICS 2009 (1-0, 12).


8...Ke7 9.Qg5+ Nf6


Here Stockfish 6 says Black has the advantage, while Houdini 3 says the position is equal.


Both prefer the text to 9...Ke8  of perrypawnpusher - adamzzzz, blitz, FICS, 2009 (1-0, 39). 


10.Qc5+


Better than 10.e5 of perrypawnpusher - JokeritT, blitz, FICS, 2010 (1-0, 28).


10...d6


Stockfish 6 slightly prefers 10...Ke8 to the text, while Houdini 3 thinks 10...d6 is better. 


11.Qxd4 Be6 


Here, Houdini 3 likes White, while Stockfish 6 prefers Black.


Of course.


For the record, I have also seen:


11...c5 in perrypawnpusher - foreverblackman, blitz, FICS, 2010 (1-0, 21) and perrypawnpusher - vlas, blitz, FICS, 2010 (0-1, 23);


11...Qd7 in perrypawnpusher - theferno, blitz, FICS, 2010 (1-0, 28);


and 11...Bg7 in perrypawnpusher - Raankh, blitz, FICS, 2010 (1-0, 49). 


12.Nc3


Also possible is 12.f4 c5 when again Houdini 3  likes White, while Stockfish 6 likes Black.


12...Bh6 13.d3 Bxc1 14.Rxc1


Both Stockfish 6 and Houdini 3 suggest 13...c5 first, to displace the White Queen.  


White has four pawns for his sacrificed piece. Even if the position is "objectively" even, his prospects are good at club play level.


The next few moves show that both players are blind to some tactical possibilities, however.


14...Qg8 15.g3 Bh3 16.Nd5+?! Nxd5 17.Qxd5? Qxd5 18.exd5 Rae8 


Both players overlook the fork 18...Bg2! when Black can grab a pawn and increase Kingside pressure after 19.Rg1 Rxh2 20.c4 Rf8.


19.Kd2 Kd7 20.c4 Re7 21.f4 Rhe8 22.Rce1 Rxe1 23.Rxe1 Rxe1 24.Kxe1


Both computer programs see the position as equal.


What follows goes along with suggestion that a bad plan is better than no plan at all - which is a nice way of saying that my bad idea worked, while my opponent missed some good ideas.


24...Bg4 25.Kf2 Ke7 26.Kg2?! Kf6?! 




Black is worried about stopping the Kingside pawns, when he probably should look at using his Bishop to capture a couple of center pawns: 26...Be2 27.d4 Bxc4 28.a3 Bxd5+ 29.Kf2 b6. After this, Black can look to create his own passed pawn, which should counter White's activity.


27.h3 Bd7?!


Again, 27...Be2 was to be preferred. Black's Bishop has to cut down the number of enemy pawns before they become a real problem. 


28.g4 Bxg4


This is tantamount to resignation. White can now develop play on both wings. At least one passer is bound to get through.


29.hxg4 


29...a6 30.Kf3 c5 31.dxc6 bxc6 32.Ke4 Kg6 33.d4 a5 34.b3 Kf6 35.a3 Kg6 36.b4 


Black resigned


Saturday, November 28, 2009

Folly

Remember the quote that the winner in a chess game is the player who makes the next-to-last mistake ? This always seemed hedged a bit by Bronstein's equally wry suggestion that three little mistakes make one big mistake.

In any event, as I indicated in "No Letdown", I believe that when it comes to playing the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), if my opponent makes a series of small mistakes, and I make a series of smaller mistakes, then eventually I should catch up...

Still, it took a while for me to be at peace with the following game.

perrypawnpusher - lourotors
blitz FICS, 2009

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4


The Blackburne Shilling Gambit.

4.Bxf7+

The Blackburne Shilling Jerome Gambit.

4...Kxf7 5.Nxe5+ Ke8


The King can also go to e6. See "Crime and Punisher".

6.Qh5+ g6 7.Nxg6



7...Nxc2+

As in perrypawnpusher - tiagorom, blitz FICS, 2009, although that game actually took place after this one.

More frequently, Black captures the Knight: 7...hxg6 8.Qxg6+ (8.Qxh8 Nh6 9.Qxd4 Qg5 10.0-0 Bc5 11.Qh8+ Ke7 12.d4 Black resigned, perrypawnpusher - tampajake, FICS, 2009) 8...Ke7 9.Qg5+ Ke8 10.Qe5+ Qe7 11.Qxd4 Bg7 12.Qc4 Kd8 13.Nc3 Nf6 14.0-0 c6 15.d4 d5 16.exd5 Nxd5 17.Nxd5 cxd5 18.Qxd5+ Qd7 19.Bg5+ Kc7 20.Qc5+ Qc6 21.Qxc6+ bxc6 22.c3 Rb8 23.b3 Rh5 24.Bf4+ Kb7 25.Bxb8 Kxb8 26.Rae1 Ba6 27.Re8+ Kc7 28.Rfe1 Bh6 29.R8e5 Rxe5 30.Rxe5 Bd2 31.c4 Bc3 32.Re4 Bb7 33.d5 cxd5 34.cxd5 Bxd5 35.Re7+ Kb6 36.h4 Bf6 37.Rd7 Be6 38.Rd6+ Kc7 39.Rxe6 Black resigned, perrypawnpusher - adamzzzz, blitz FICS, 2009.

I've also seen 7...Nf6 8.Qe5+ Ne6 Black resigned, perrypawnpusher - fintrade, blitz FICS, 2009 (8...Qe7 9.Nxe7 Bxe7 10.Qxd4 d6 11.Nc3 Be6 12.Nd5 c5 13.Nxf6+ Bxf6 14.Qxf6 Rf8 15.Qxe6+ Kd8 16.Qxd6+ Ke8 17.d3 Rd8 18.Qe7 checkmate, perrypawnpusher - patitolo, blitz FICS, 2005)

8.Kd1 Nf6

This may work in analogous situations, but not here: best was 8...hxg6 9.Qxg6+ Ke7 and the position is unclear after 10.d3 or 10.Kxc2. 

9.Qe5+ Be7 10.Nxh8



Squandering an advantage, when the simple 10.Nxe7 Qxe7 11.Qxe7+ Kxe7 12.Kxc2 was available.

White's Knight will be stuck in the corner, just as Black's will in the opposite corner, but the second player will come out a piece ahead.

10...Nxa1 11.d4

It might have been a bit better to go after the enemy Knight immediately with 11.b3, intending Qxa1.

11...d6 12.Qg3

12...Kd7

The King moves to allow the Queen to attack the Knight. Rybka suggested after the game 12...c5 13.d5 Bg4+ 14.Ke1 with a winning advantage for Black. The c-pawn acts as a shield against checks by the White Queen (see the following note) and the Bishop check moves the enemy King away from the Knight's escape square, c2.

13.Nf7

It was time to sue for peace with 13.Qh3+ Ke8 (or 13...Kc6 14.Qc3+, etc.) 14.Qg3. Of course, if Black then plays 14...c5 (or any other number of moves) instead of repeating the position, he is still comfortably ahead.

13...Qf8 14.Ng5 Nh5


Quite unexpectedly, White's Knight has been allowed to escape, and this move loses a piece.

The fact is that the position is quite complicated, as Rybka's post mortem analysis indicates: 14...h6 15.Nh3 Qf7 (hoping to safe the Knight at a1)16.Nc3 b5 17.Nf4 Qc4 18.Qd3 Ng4 (taking aim at White's other Rook) 19.Qxc4 bxc4 20.Nh3 Rb8 21.f3 Nf6 22.Nf4 Ng8 23.Nfd5 which is evaluated as slightly better for Black. The cramp on his Queenside limits White's play.

15.Qg4+ Kd8 16.Qxh5 Qxf2


17.Qe2

I should have simplified with 17.Nf7+ Kd7 18.Qf5+, forcing the exchange of Queens.

17...Qh4

In turn, my opponent missed 17...Qxd4+ which keeps the pot boiling.

This is feeling like the typical Jerome Gambit family game: I'm staying in the game with help from my opponent – a dangerous way to live.

18.Nf3 Qh5 19.Nc3 Bg4


20.b3 d5 21.Nxd5 Bd6 22.Bg5+ Kc8 23.Kd2

Hoping to gather in the Knight at a1, at last, but Black can now play 23...Bxf3 24.Qxf3 Qxg5+ recovering a piece. He will eventually have to give it back with ...Na1xb3, but White's advantage will be made smaller.

23...c6 24.Rxa1

Understandable, as the enemy Knight has been sitting in the corner for over a dozen moves. I also thought that the open file would give me attacking chances against Black's King. It does, although 24.Bf4 was probably more straight forward.

24...cxd5 25.Rc1+ Kd7

White now has a mate in 7 (a better, but still losing choice for Black was 25...Kb8) but of course, it won't play itself.

26.e5

This move is inadequate, as, for starters, it allows 26...Bxf3+ and Black can work his way to a draw.

It also misses 26.Qb5+ Ke6 27.Qxd5+ Kd7 28.Qb5+ Ke6 29.Rc7 Bf4+ 30.Kc2 Kd6 31.Qc5+ Ke6 32.Qe7 mate





analysis diagram





26...Bb4+ 27.Kc2 Rc8+



Black, in turn, wants to use the c-file for attack. It shouldn't work. It does.

28.Kb2 Rxc1 29.Kxc1



It was time for the stranded Bishop to come home with 29.Bxc1. Now it will be lost.

29...Bxf3 30.gxf3

Well beyond my sight was Rybka's suggestion 30.e6+, which would have allowed White to draw after 30...Kc6 31.Qc2+ Kd6 32.Bf4+ Kxe6 33.Qc8+ Kf7 34.gxf3 Qxf3 35.Qxb7+

30...Qxg5+ 31.Kc2


 Sigh. Another pawns vs Bishop endgame, this time with Queens instead of Rooks (see my game against CorH).

33.f4
31...Qg6+ 32.Kb2 Qb6

This hurries the loss, although Rybka's analysis is ultimately just as painful: 33.Qd3 Be7 34.f4 Qh6 35.Qg3 Qg6 36.Qh3+ Kc7 37.f5 Qg1 38.Qc3+ Kb8 39.f6 Qf2+ 40.Kc1 Ba3+ 41.Kd1 Qxh2 42.b4 Qxa2 43.e6 Qb1+ 44.Ke2 Qe4+ 45.Kd1 Qh1+ 46.Ke2 Qg2+ 47.Kd1 Qf1+.

33...Qxd4+ 34.Kb1 Ba3 35.Qg4+ Kc6 36.Qc8+


Resignation would have been okay, instead.

36...Kb6 37.Qc2 Qg1+ White resigned

Monday, February 23, 2009

Please, don't do that...



I have said this before, nicely (see "Blackburne Shilling Jerome Gambit" and "Blackburne Shilling Jerome Gambit (2)): please don't play the Blackburne Shilling Gambit against me... I tend to go Jerome all over it.
I was finishing up a nice evening of blitz at the Free Internet Chess Server (FICS), having played some fun games with several pleasant, creative opponents. The only disappointment was that I hadn't been able to either play or defend against a Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+). I had one last chance...
perrypawnpusher - tampajake
blitz 10 7, FICS, 2009


1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4

Time to insert some relevant discussion from a forum at ChessGames from 6 years ago:

Aulero: 1.e4 e5 2.Nf3 Nc6 3.Bc4 After 3...Nd4 4.Bxf7+, Simply 4.Bxf7+, I cannot resist to this shot, especially in a rapid game!

Cyphelium: 4. Bxf7+, as suggested above, doesn't convince me
Cyphelium: But ok, I admit that 4. Bxf7+ might be good after all. Though to play this, white has to agree to _defend_ his position, which hardly was your idea with the f7 sac. ;-)
Aulero: 4...Kxf7 5.Nxe5+ Ke8 My concern is about 5...Ke6 and White should prove that the attack is winning.
Honza Cervenka: 5...Ke7 is also possible.
Cyphelium: might indeed be the best move. No forced lines that I see. I guess white has to continue Cochrane gambit-style, develop his pieces and push forward his central pawns, hoping that black's king position will give him compensation. 6.c3 Might be a good start.
Aulero: 6.Qh5+ g6 7.Nxg6 Nf6 8.Qh3 [ I play 8.Qe5+ (not Qh3) and 8...Ne6 (8...Be7 9.Nxe7) 9.Nxh8 and I don't think White is worse.]
Cyphelium: 9...d5. Ok, of course 8.Qe5+ is more natural than 8.Qh3 and better too. It's not so simple though. 8. Qe5+ Ne6 9. Nxh8 and I think we should analyse further: and now white has to thread carefully. Or maybe I need more coffee and don't understand this at all?
Cyphelium: Possible, but look at this: A/ Few would play 10.exd5 I think: ( B/ 10.0-0 Bd6 11.Qf5 ( 11.Qc3 seems worse) 11...Nf4 12.Qg5 dxe4 and it's not so clear, but white might easily run into things like 13. Nc3 Nf4 14. Qg5 Bh3! Then a very nice (but not forced) variation is 15. Nxe4 Nxe4 16. Qg8+ Kd7 17. Qxd8+ (17.Qf7+!?)17.- Rxd8 18. gxh3 Rg8+! 19. Kh1 Nxh3 with mate on f2 to follow.
Cyphelium: Bd6 and now 11.Qf5 just loses to a) instead 11.Qc3 Nxd5 and black has active play and compensation. But perhaps not enough? (Though I would hate to be white.) b)There is the brilliant resource 11.Nf7 and - after 11...Bxe5 ( b)Why not 11...Kxf7 instead of 11.- Bxe5? 12.dxe6+ Bxe6 and it seems to me that white is lagging _somewhat_ in development and that black has compensation and plenty of it too.For a start, which square will you put your queen on? Rooks and queens and stuff are soon coming to e-files and g-files....
Aulero: Ok, White's development is late and it must be very carefully. I should admit one point to Black's favour, White started with a sacrifice in order to mate and now is up in material but it must defend! I don't know which is the best square for Queen: impulsively I would play Qe2 trying to follow with d3, Be3, Nc3, 0-0-0 ... yes, I know, Black will not watch passively, but it is hard to foresight all possibledevelopments.

Cyphelium: On 13.Qe2 I thought 13...Qg8 would be a good answer. (pawn g2 hanging, Re8 coming etc) But as you say, it's very complicated. In a rapid game, I might well go for your 4.Bxf7+. In a long game I'd prefer 4. Nxd4

Aulero: 12.Nxd8 Nxd8 - White is not worse.

Cyphelium: 11...Nf4 12.Qg5 Qe7+
Cyphelium: 8...hxg6 9.Qxh8 Nxc2+ and black will end up with a piece for two pawns.



Admit it, readers: you skipped a bit of that discussion to get here, didn't you? Me, too, as it turns out...


4.Bxf7+ 4...Kxf7 5.Nxe5+ Ke8 6.Qh5+ g6


The alternative leads to mate: 6...Ke7 7.Qf7+ Kd6 8.Nc4+ Kc5 9.Qd5+ Kb4 10.a3+ Ka4 11.Qa5 checkmate


7.Nxg6 hxg6 8.Qxh8


Here's another good reason not to play the Blackburne Shilling Gambit against me: I don't know enough about my favorite lines to stay out of trouble. Instead of grabbing the Rook White should play 8.Qxg6+ and then capture the Black Knight: 8...Ke7 9.Qg5+ Nf6 10.Qc5+ Kf7 11.Qxd4 with a slight disadvantage (four pawns for a piece) that should be comfortable for any Jerome Gambiteer.


8...Nh6



Phew! Good luck is better than a license to steal...

After 8...Nxc2+ the position is a mess, especially following 9.Kd1 Nxa1 10.Qxg8 Qg5. Even if White captures the Knight at a1, it will cost him a couple of pawns and Black is liable to maintain an edge.


9.Qxd4 Qg5 10.0-0 Bc5 11.Qh8+ Ke7 12.d4 Black resigns





graphic by Jeff Bucchino, the Wizard of Draws