Showing posts with label Despistado. Show all posts
Showing posts with label Despistado. Show all posts

Monday, May 18, 2020

Jerome Gambit: Searching for A Few Answers (Part 1)


I am used to playing over 1-minute (no increment) Jerome Gambit games by angelcamina. Occasionally I have wondered, what would happen if he had more time to work his magic?

Recently I found out - he sent me a 5-minute game that got weird, fast, and that's saying something for a Jerome Gambit.

For some enlightenment, I did what I usually do: turning to The Database I looked at some of the games with that line that had been played previously. There were only 5, I'm not sure how many of those games had a grip on the line, either.

So, I turned to my trusted Komodo 10 for insight - you can probably guess how that turned out.

Finally, I reviewed my blog, and, although I had peeked at the line, before - see "Boris isn't so hot..." and ''Jerome Gambit Hammer" - there was still more to be said.

Here's how it all came down...

angelcamina - nanangtisna
5 0 blitz, lichess.org, 2020

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 




4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 g5 



Here's a position you don't see very often. What is it all about? What is Black getting at?

It is possible to get a hint by looking at a Bill Wall game that continued 8.fxe5 Qf8, as if Black were offering a counter-gambit followed by a threatened Queen check at f2. Bill wasn't impressed, however, and quickly found a solution after 9.Rf1 Qe7 10.Qg4+ Kxe5 11.Qf5+, Black resigned, facing a mate in 1, Wall,B - Lisandru, Chess.com, 2012. The defender's Queen should have gone to g7 instead of e7, but 10.d4 would have then cemented White's avantage. 

8.fxe5 Kxe5 

After a long think (26 ply), Komodo 10 passes up this move, as well as 8...d5 and 8...Ne7, and chooses Stockfish 7's suggestion from 4 years ago, 8...Nf6 9.exf6 Qxf6 10.Rf1 Qg6 11.Qe2 Ke7, with White up about a pawn and a half.

But nanangtisna's choice of move is reasonable.

9.Qf7 

Setting up a mating net.

Previously, 9.Rf1 was seen in GuestCRJQ - Despistado, FICS, 2009 (1-0, 26),  Wall,B - Boris, sparkchess.com, 2012 (1-0, 16) and Vlastous - PornobeshKumar , internet, 2016 (1-0, 13).

Also successful was 9.c3 Be7 10.d4+ in Black,D - Boris, sparkchess.com, 2012 (1-0, 18). 

Probably best is Komodo 10's (and Stockfish 7's!) 9.d4+, as 9...Bxd4 10.Bxg5 Nf6 11.Bxf6+ Kxf6 12.Rf1+ Kg7 13.Rf7+ Kg8 14.Rf3 Bf6 15.Nc3 Kg7 remains, as I noted
a line worth looking at in detail as an example of building an attack.
9...d5

Often this strike at the center, opening up lines for development, serves Black well in the Jerome Gambit. Here, though, 9...Nf6 might have been better, although White could meet it with 10.d4+, with play similar to that in Vlastous - PornobeshKumarInternet, 2016.

It is worth pointing out, again, that this is a 5-minute blitz game, and it is always easier to come up with improvements after the fact.

10.Qg7+

Out of the blue, Komodo 10 prefers 10.b4. It takes a moment to realize that it has not just found a way for White to castle - 10...Bxb4 11.0-0 - as it further recommends that Black answer with 10...Nf6, giving up a piece to 11.bxc5. No, the b-pawn advances to allow White to subsequently fianchetto his dark squared Bishop.

The idea 10.b4 Bd4 11.c3 Bb6 12.d4 reminds me of a suggestion that Stefan Bücker made to me in a similar line, back in 2004, when I still hoped to have my Jerome Gambit article published in his fantastic chess magazine, Kaissiber. See, fittingly, "Delusions of Grandeur".

[to be continued]

Tuesday, July 19, 2016

Jerome Gambit Hammer




Sometimes defenders will believe that the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) is such a dubious opening that just about any defense will be good enough to defeat it. When that happens, the attacker should double his efforts to finish the game off quickly.

The following Internet game is from chessfriend Vlasta Fejfar of the Czech Republic. He makes fast work of his opponent.

Vlastous - PornobeshKumar
Internet, 2016

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




4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 g5



Quite an odd move. I was surprised to find several examples in The Database, including two games where it was played by the "Boris" computer personality at Sparkchess.com.

8.fxe5 Kxe5

Stockfish 7 suggests 8...Nf6 9.exf6 Qxf6 10.Rf1 Qg6 11.Qe2 Ke7 12.Nc3 Kd8 when White is better.

Wall, B - Lisandru, Chess.com, 2012, continued 8...Qf8 9.Rf1 Qe7 10.Qg4+ Kxe5 11.Qf5+ Black resigned

9.Rf1

White played 9.c3 and then 10.d4+ successfully in Black,D - Boris, Sparkchess.com, 2012 (1-0, 18).

Stockfish 7 argues that White can hit the center immediately: 9.d4+ Bxd4 10.Bxg5 Nf6 11.Bxf6+ Kxf6 and Black's Bishop, Queen, and King remain in danger, e.g. 12.Rf1+ Kg7 13.Rf7+ Kg8 14.Rf3 Bf6 15.Nc3 Kg7 16.Nd5 Rf8 17.Rh3 Rf7 18.e5 - a line worth looking at in detail as an example of building an attack.

9...d5

Or 9...Be7 10.d4+ Kxd4 11.Be3+ Kxe3 12.Qf3+ Kd4 13.Qc3+ Kxe4 14.Qd3+ Ke5 15.Rf5+ Ke6 16.Qd5 checkmate, Wall,B - Boris, Chess.com, 2012.

10.d4+ Bxd4 11.Bxg5 Qd7



Black was doomed after 11...Kd6 12.Bxd8 in GuestCRJQ - Despistado, FICS, 2009 (1-0, 26).

12.Bh4+ Kd6 13. Qxd5  checkmate



Thursday, May 17, 2012

Stepping up the Heat

Sad to say, it is not a good time to be the online computer program Boris at sparkchess.com, at least as far as the Jerome Gambit goes. No sooner had Bill Wall handed the silicon monster its head, as it were, he decided to see if he could improve on Dave Black's recent thrashing of the program – and, remember, Dave disassembled it and delivered mate in 18 moves.


Wall,B - Boris
sparkchess.com 2012


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 




4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 g5



In the computer world, as well as in the human chess world, it is dangerous to become too predictable. Readers saw this defense in "Boris Isn't So Hot," and you can be sure that Bill Wall saw it, too.


8.fxe5 Kxe5 9.Rf1


Deviating from 9.c3 of Black,D - Boris, sparkchess.com, 2012, (1-0, 18).


9...Be7


An improvement over 9...d5 from GuestCRJQ - Despistado, FICS, 2009 (1-0, 26). Still, White is better, thanks to Black's exposed King.


10.d4+ Kxd4 


In order to avoid checkmate, Boris needed to play 10...Kd6, which was where he placed his King against Dave Black, when checked in that game by 10.d4+.


11.Be3+ Kxe3 12.Qf3+ Kd4 13.Qc3+ Kxe4 14.Qd3+ Ke5 15.Rf5+ Ke6 16.Qd5 checkmate







Sunday, May 13, 2012

Boris Isn't So Hot...




From the email bag, a note and a game from Dave Black, who has graced these pages before...


Hi Rick,
I came across a site with a online chess program so I thought I would give it a bash with the Jerome.
The program has 3 levels available to play for free named Cody, Claire and Boris. Boris's blurb states "Get ready for a challenge. Boris will do his best to beat you, play if you're an advanced player." 

I will let you judge just how advanced Boris is.  ;)



Dave Black - Boris
sparkchess.com, 2012
(notes by Rick)


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 




4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 g5




To go from a won game to a worse (if not lost) one so quickly, deserves recognition,  but this defense has been played before.


8.fxe5 Kxe5


Chess software these days is not supposed to be so materialistic, but, in Boris' defense, its position was already critical.


Black's simplest continuation was 8...Nf6, and, after 9.exf6 Qxf6 he can play on, a pawn down.


Otherwise, he had the thematic 8...d5, although after 9.d4 his position requires much thought: 9...Be7 (there is no time for 9...Bxd4, and the pawn at g5 needs defending) 10.0-0 (with mate threats) Kd7 11.Qf7 and Black is so tied up, if he does not want to immediately return a piece with ...Nh6 then he has to try something tortured like 11...Kc6, when 12.Nc3 b6 13.exd5+ Kb7 14.Qg7 is just one possible unfortunate outcome.


9. c3


Previously GuestCRJQ - Despistado, FICS, 2009, continued 9.Rf1 d5 10.d4+ Bxd4 11.Bxg5 Kd6 12.Bxd8 Be6 13.Qh4 Bxb2 14.Qg3+ Kd7 15.Qxc7+ Ke8 16.Qxb7 Rxd8 17.Qxb2 d4 18.Qb5+ Bd7 19.Qe5+ Be6 20.Qxh8 d3 21.Qg7 Ne7 22.Rf8+ Kd7 23.Rxd8+ Kxd8 24.cxd3 h5 25.Nc3 Ke8 26.Rb1 Black resigned


Analagously, 9.d4+ was also playable.


9...Be7 10.d4+ 


Going for the jugular with 10.Qf7 was stronger, but, like I indicated above, the position is complicated. What is relevant is that Dave has a "feel" for it, while Boris does not.


10...Kd6 


11.O-O Kc6 12.Na3 Kb6


Black should have tried "castling" with 12...b6 and 13...Kb7.


13.Qf7 


13...Bxa3


Opening the b-file for White's Rook can hardly be a good idea.


14.bxa3 h6 15.Rb1+ Ka5 16.Qd5+ c5 17.Qxc5+ Ka6 18.Qb5 checkmate