Showing posts with label vlas. Show all posts
Showing posts with label vlas. Show all posts

Wednesday, April 22, 2020

Blackburne Shilling Jerome Gambit Mystery

I have added to The Database some more Jerome Gambit (and Jerome-ish) games played online at FICS from the first quarter of 2020. Making my way through some of them, I came upon a small mystery.

Here is the game. By the way, drumme is well-versed in the Jerome Gambit, having 589 games in The Database, scoring 55%.

drumme - talyprossoneri
4 0 blitz, FICS, 2020

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.Nx6 hxg6 8.Qxg6+ Ke7 9.d3 Black resigned

Black's resignation is puzzling. He has two extra pieces for four pawns - perhaps a practical challenge in a 4-minute game (for the record, in the 45 games in The Database with this position, Black won only 16, and drew 2) - an advantage that Komodo 10 assesses at about a pawn and a half.

Maybe the outside world intruded to call him away. 

If the reason was chessic, I can make a guess. Suppose talyprossoneri was intending on playing the pawn capture and fork 9...Nxc2+, followed by 10.Kd1 Nxa1 - when he suddenly realized that his opponent would then have 11.Bg5+, as in paddjaa - vlas, blitz, FICS, 2011, which would lead to checkmate after 11...Nf6 12.Qxf6+ Ke8 13.Qg6+. Ouch.




analysis diagram





However, Black did not have to go after the poisoned Rook, as he had at least two other reasonable moves to consider.

The first was 9...Ne6, although, after 10.Bg5+ Nxg5 11.Qxg5+ Black still has to solve the problem of the f6 square and the d8-h4 diagonal. A 1-minute game, jollygeoff - brouchek 1 0 lightning, FICS, 2016, finished things off from that position with 11...Kf7? 12.Qxd8 and Black resigned a few moves later. The proper response was 11...Nf6, as after 12.e5 Kf7 13.exf6 Qxf6




analysis diagram




Black's two Bishops (one, the extra piece) are probably better than White's three extra pawns.

The second choice for Black is the somewhat stronger (according to Komodo 10) 9...Nf6, as long as the defender meets 10.e5 with 10...Ke6!? (Instead, 10...Ne8? was seen in KingAsh - NightEagle, 1 0 lightning, FICS, 2015 [1-0, 40, time forfeit], when the game should have continued with 11.Bg5+, again leading to checkmate). Best, then, for White would be 11.exf6 Qxf6, as opposed to 11.0-0, from GOH - gruzanin, blitz, FICS, 2013 (1-0, 42, time forfeit).




Analysis position







In club play, of course, in both cases, White might have some practical chances with his three passed, connected passed pawns against the enemy Bishop. Especially, as we have seen in some of the example games, time appeared to be on the attacker's side.

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


Thursday, January 23, 2014

BSJG: Return of ZekeTheWolf



perrypawnpusher - ZekeTheWolf
blitz, FICS, 2014

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 


The Blackburne Shilling Gambit.


4.Bxf7+ 


The Blackburne Shilling Jerome Gambit. 


If you play the BSG at FICS (Free Internet Chess Server), sooner or later you will encounter the BSJG. Before this game, according to The Database, ZekeTheWolf had met it 24 times, winning 10. That's scoring 40%, not quite the score of Black as a whole for the BSJG in 4,272 games in The Database - 44%,


4...Kxf7 5.Nxe5+ Ke7 


Our earlier game continued very differently - 5...Ke8 6.Qh5+ g6 7.Nxg6 Nxc2+ perrypawnpusher, ZekeTheWolf, blitz, FICS, 2010, (1-0, 30).


6.c3


I tried 6.Qh5?! once, but it did not turn out well in perrypawnpusher - vlas, blitz, FICS, 2009 (0-1, 26). 


6...Ne6 7.d4 


Here we have a bit of a "free form" position, where Black's one weakness is the placement of his King. His extra piece for two pawns gives him an edge, but he has to put together a plan and execute it before he can think about gathering in the point.


7...d6 8.Nd3 g6 9.f4 Ke8 10.O-O Bg7 




Here White would probably do best to patiently continue his development with 11.Be3 and 12.Nd2.


11.f5 gxf5


By voluntarily opening the e8-h5 diagonal, Black, makes his King's life more difficult. After the game, Houdini suggested the curious 11...Ng5!?, with pressure on White's e-pawn, as a way to keep the game in balance.


12.exf5 


Okay, but 12.Qh5+ Kd7 13.d5 would have really shaken things up.


Black now decides it is time to give a piece back.


12...Nxd4 13.cxd4 Bxd4+ 14.Kh1 Nf6 




There is a hole in this line that both ZekeTheWolf and I overlooked, which would have made 14...Qf6 the better move.


15.Nc3


Again, okay, but missing the fork 15.Qa4+


15...Rg8 16.Re1+


Ditto. 


16... Kf7 17.Qf3 Bxc3 18.bxc3





If White has an advantage any more, it is in his better development and safer King. Unfortunately, Black now follows a defensive maxim (to diffuse an attack, exchange pieces) that immediately shifts things back toward the first player.


18...Re8 19.Bg5 Rxe1+ 20.Rxe1 Qd7 21.Re6 Ng8 22.Qh5+


Black resigned



Sunday, December 8, 2013

What You Don't See CAN Hurt You (on the dark diagonals)


After the previously posted game, my opponent challenged me to a game with White, and, after I introduced him to "the cheapo defense to the Scotch Opening", we went back at it again with the Blackburne Shilling Jerome Gambit.

There are some howlers in the following game, but there are some points of interest, as well.

perrypawnpusher  - michon
blitz, FICS, 2013

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 




The Blackburne Shilling Gambit.

4.Bxf7+ 

The Blackburne Shilling Jerome Gambit.

4...Kxf7 5.Nxe5+ Ke7 6.c3 



Again, Black's King ends up on e7 - but that is okay for this variation.

My move is more accurate than the 6.Qh5 in perrypawnpusher - vlas, blitz, FICS, 2009 (0-1, 26). 

6...d6 

In turn, this is an improvment over 6...Ne6 seen in perrypawnpusher - Macgregr, blitz, FICS, 2010 (1-0, 56). 

7.cxd4 dxe5 8.dxe5 

Here, the computers now like 8...Qd3 9.Qe2 Qxe2+ 10.Kxe2 c5 with and edge for Black. White has three "Jerome pawns" for his sacrificed piece.

8... Bg4 9.f3 

Okay, okay, let's just move along here...

I think my opponent just overlooked the fact that his Bishop was unprotected. I've noticed that I have a tendency to respond to "impossible" moves (impossible in my deliberations) with knee-jerk, stereotypical moves (Bishop attack; block Bishop).

9...Bh5 10.d4 c5 11.Bg5+ 

The same kind of problem on the same diagonal as last game.

11...Nf6 12.exf6+ gxf6 13.Be3 Kf7 



Black's two Bishops don't make up for his two (soon three) lost pawns.

14.Nc3 Bg7 15.dxc5 f5 16.0-0 Bxc3 17.bxc3 Qf6 



Played too quickly. Now the a1-h8 dark diagonal joins the d8-h4 diagonal as a source of pain.

18.Bd4 Qb6 Black resigned

A mouse-slip on the final, fatal dark diagonal, a7-f2, is enough to turn over his King.

Monday, October 21, 2013

Move Along, Move Along, There's Nothing Here To Look At...


It's been a while - well over a year - since I've played a Blackburne Shilling Jerome Gambit, and I knew that I was a bit rusty (and a lot forgetful), but I had no idea I had such a horrible game in me - until I played the following. To be fair, my opponent wasn't on his best game, either.

You would do just as well to check out the first six moves, then move along. 

perrypawnpusher - michon
blitz, FICS, 2013

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 


The Blackburne Shilling Gambit. Black is just dying for White to play 4.Nxe5, so he can counter-attack with 4...Qg5!?

4.Bxf7+ 

The Blackburne Shilling Jerome Gambit. Of course, White can also play 4.Nxd4, 4.0-0, 4.d3 or 4.c3.

4...Ke7 

The Blackburne Shilling Jerome Gambit, Declined; more of a psychological ploy than a move sustained by analysis. I have likened it to a "Jedi Mind Trick".

There are 451 games in The Database with this move, and, not surprisingly, White wins 70%. 

5.Bxg8 

5.Bc4 was seen in perrypawnpusher - PlatinumKnight, blitz, FICS, 2010 (1-0, 9); perrypawnpusher - zadox, blitz, FICS, 2010 (1-0, 14); and perrypawnpusher - vlas, blitz, FICS, 2010, (1-0, 84).

5.Bb3 was seen in perrypawnpusher - Roetman, blitz, FICS, 2010 (1-0, 12). 

5...Rxg8 

Or 5...Nxf3+ as in perrypawnpusher - zadox, blitz, FICS, 2011 (1-0, 49); and perrypawnpusher - zimmernazl, blitz, FICS, 2012 (1-0, 30).

Or 5...Ke8 as in perrypawnpusher - zadox, blitz, FICS, 2010 (1-0, 29). 

6.Nxe5 

And, seriously, folks, the following moves are for historical (not hysterical) purposes only. Feel free to ignore them. (You can find them in The Database.)

6...Kd6 c5 8.Nxd4 cxd4 9.Qh5 h6 10.Qd5+ Kc7 11.Qxg8 Qe7 12.Qc4+ Kd8 13.Qxd4 d6 14.Nc3 g5 15.Nd5 Qe8 16.Qf6+ Be7 17.Qxe7+ Qxe7 18.Nxe7 Kxe7 19.d4 Bg4 20.f3 Bh5 21.Be3 Re8 22.0-0 Kd7 23.c4 Kc7 24.c5 g4 25.cxd6+ Kxd6 26.Bf4+ Kd7 27.Rac1 gxf3 28.Rc7+ Kd8 29.gxf3 Bf7 30.Bxh6 Bxa2 31.Rxb7 Bc4 32.Rb8+ Kd7 33.Rxe8 Kxe8 34.Rc1 Be2 35.Kf2 Kf7 36.Rc7+ Kg6 37.Be3 Bb5 38.Rxa7 Kh5 39.Ra5 Kh4 40.Rxb5 Kh3 41.Rh5 checkmate

Wednesday, July 4, 2012

Just Makin' Moves


The following game, my most recent Blackburne Shilling Jerome Gambit, is the kind of encounter where I made a move, then my opponent made a move, then I made a move... Afterward, Rybka criticized most of them. It's a lazy game.

perrypawnpusher - zimmernazl
blitz, FICS, 2012

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 


The Blackburne Shilling Gambit.


4.Bxf7+

The Blackburne Shilling Jerome Gambit.

4...Ke7 5.Bxg8

Of course, it is also possible to retreat the Bishop with 5.Bc4 as in perrypawnpusher - zadox, blitz, FICS, 2010 (1-0, 14),  perrypawnpusher - PlatinumKnight, blitz, FICS, 2010 (1-0, 9); and perrypawnpusher - vlas, blitz, FICS, 2010 (1-0, 84); or with 5.Bb3 as in perrypawnpusher - Roetman, blitz, FICS, 2010 (1-0, 12).

5...Nxf3+

More routine is 5...Rxg8 as in perrypawnpusher - TheProducer, blitz, FICS, 2009 (1-0, 16) and perrypawnpusher - issamica, blitz, FICS, 2011 (1-0, 8).

Downright strange was 5...Ke8 6.Nxe5 (6.Bb3) Qg5 7.Nf3 Qxg2 8.Nxd4 Qxh1+ 9.Ke2 Qxd1+ 10.Kxd1 Rxg8 as in perrypawnpusher - zadox, FICS, 2010 (1-0, 29).

6.Qxf3 Rxg8 7.Nc3 g6 

Or 7...d6 like in perrypawnpusher - zadox, blitz, FICS, 2011 (1-0, 49).


8.d4 Ke8 9.Be3

At this point I realized that I was just making moves, and so decided to focus on development and King safety, trusting that my extra pawn and my opponent's unsafe King would decide the game.

9...Bb4 10.0-0 Bxc3 11.bxc3 exd4 12.cxd4 Rf8 13.Qe2 d6 14.f4 

In the "Jerome pawns" we trust.

14...b6 15.e5 dxe5 16.fxe5 Bb7 17.Rxf8+ Kxf8 18.Rf1+ Kg7 19.Qf2 Qe7 20.c3 Ba6 21.Qf6+ Qxf6 22.Rxf6 Rf8  23.Rxf8 


A little to routine. With 23.Bh6+ I could have won the exchange and made the endgame easier.

23...Kxf8 24.Kf2 Ke7 25.Kg3 Bb7 26.h4 c5 27.dxc5 bxc5 28.Bxc5+ Ke6 29.Bxa7 Kf5 30.Bd4 Black resigned

My guess is that my opponent resigned here when he noticed that he was just making moves here, too, and could have played 29...Kxe5, instead. It would have made a difference.

I was willing to go into the notoriously drawish Bishops-of-opposite-colors endgame, and 3 pawns up, I think White would win; but 2 pawns up, I think Black had a draw...