Jerome Gambit: More or Less (Part 2)

[continued from previous post]

perrypawnpusher - scarsetto
5 5 blitz, FICS, 2017

What is going on?

Here we have the position from a recent blitz game of mine, before I played the decent 11.Nc3, believing that an extra piece would help weave a mating net. This is opposed to Stockfish 8's suggestion of 11.Qb3+, which would lead (perhaps after a long and winding road) to a win of material and a simple advantage for White. 

Years ago, I had played 11.d4, which, I later noted on this blog, was insufficient, as 

after 11...Bb4+ 12.c3 Bf8 it is not clear that White has anything more than checking his way repeatedly to a draw.

That is such an annoying assessment, let me show the position:

Drawn??

analysis diagram





I let Stockfish 8 analyze until a depth of 30 ply, without finding anything better than forcing a draw. I suspect, though, strong Jerome Gambiteers would simply castle and figure out the rest later...

By the way, instead of entering the recommended line in that 11.d4 game, my opponent immediately returned his extra piece with 11...Bxd4 and I was able to win the game in 46 moves, perrypawnpusher - hotintheshade, blitz, FICS, 2009. Once again, my "unscientific" opening was assisted by my opponent's "scientific" response - in this case, following the notion that a sacrificial attack can be blunted by returning material.

Back to the recent game.

11...Qh4+ 

There is something really silly about me going through a pile of analysis - after the game, in preparation for this post (and the previous one) - only to have it all wiped out by the reality of what really happened. Perhaps I was right to "move first and think later" after all.

Black can definitively show that there is no checkmate by playing the alternative 11...a5, when White gets his piece back with 12.Na4+ (the idea behind 11.Nc3, which is why I played the move in the first place) Ka7 13.Qxc5+ b6 14.Qd4 Bb7 15.0-0 when White would still be better.

Years earlier, I had faced 11...d6, which should have led to the quick 12.Qb3+ Bb4 13.Qxb4+ Ka6 14.Qb5 checkmate, but led, instead, to the obvious 12.Na4+ Ka6, when I missed 13.b4!? - but won the game, anyhow,  perrypawnpusher - Ondras, blitz, FICS, 2012 (1-0, 31). I'm always so much smarter after the game.

It is worth playing over the lines until you, too, can decide - mate or material?

12.g3 Qh3 

While a sudden Queen check can often upset a position, the problem here is that the enamy Queen has to dodge the pawn, and my attack can continue. Still, if the Black Queen can get to g2...

Interestingly enough, the text is not an improvement over the previous 12...Qf6 13. Na4+ (even stronger 13.Qb3+!? Kc6 14.Qb5+ Kd6 15.e5+ winning the Queen) 13...Ka6 14.Nxc5+ Kb5 15.a4+ Kb6 16.a5+ Black resigned, sabreman - Lovebuzz, FICS, 2014.

13.Na4+ 

Winning material, but missing the move 13.b4!?, which leads to mate: 13...Bf2+ 14.Kxf2 Qh5 15.f5 Ng4+ 16.Kg1 Qxf5 17.exf5 a5 18.Qc5+ Ka6 19.Qxa5#.

White is still much better after the text, and it is possible that in the game (blitz) I didn't have (take) time to analyze the position out to checkmate - but for sure this kind of position should yield deadlier results next time.  

13...Kb5 

Black is in a bad way. He would last longer with 13...Ka6, and in a blitz game - with clocks ticking - that would have given him chances to survive, if my time expired. Nonetheless, against that move White can grab back material, build an attack, and eventually checkmate: 14.Nxc5+ Kb6 15.Na4+ Ka6 16.b4!? b5 17.Nc5+ Kb6 18.a4 (I need another piece in the attack) c6 19.Qd6 a5 20.d3 (opening a line for another piece) Qe6 (nothing works for Black now) 21.bxa5+ Rxa5 22.Qb8+ Bb7 23.Qxb7+ Kxc5 24.Ba3+ Kc4 25.Kd2 b4 26.Qxb4+ Qc4 27.Qxc5 checkmate.

That's a long line, but pretty straight-forward.

14.Qxc5+ 

Funny. I had my mind set on one thing, and one thing only. Of course, White had, instead, 14.c4+ Kxa4 first, then 15.Qxc5 Qf1+ (delaying the inevetible) 16.Rxf1 b6 17.b3#.

A win is a win is a win; but a checkmate is a good idea, too.

14...Kxa4 

The ultimate psychological slip. So many of us have grown up playing over games of the masters featuring sacrificial frenzies that lead to glorious finishes. How easy it is, when on the receiving end, to figure "I am lost!" and succumb in classic style.

Again, if time were not a factor, Black could choose a tougher line of defense: 14...Ka6 15.Qxc7 b6 16.b4!? Qe6 17.Nc5+!? bxc5 18.b5+!? Kxb5 19.Rb1+ Ka4 20.0-0!? Qc4 21.Rf3 (that's why White castles) Qd4+ (delaying the inevitible) 22.Kg2 Qxd4 23.Qxc5 Qe2+ 24.Kg1 Qe1+ 25.Rf1 Qxf1+ 26.Kxf1 Ba6+ 27.Kg1 d6 28.Rb4#

All these tactical lines were uncovered by Stockfish 8 after the game.

If the reality is that my opponent did not find the most spirited way to defend, it is even more true that I did not find the most effective way to attack. We both stumbled; he fell. The Jerome Gambit is very much like that.

15.b3 checkmate

(If you ignore the analysis in the notes, it looks like a killer game. More or less.) 

Jerome Gambit: More or Less (Part 1)

I still haven't had many opportunities to play chess lately, and when I have had the chance, I haven't been able to reach the Jerome Gambit. This has been a bit frustrating, as I know that in the earlier years of this blog I was able to share my adventures - good and bad - and trace out a path, as it were, sharing history, perspective and analysis, through this strange chess land.

Fortunately, readers of this blog have shared their games and analysis, and that has kept things moving. I hope you have appreciated their play. I certainly have.

Just the other day I was finally able to play an online blitz Jerome Gambit. As with many of my matches, there is both more and less there than meets the eye. Let me see if I can explain... 

Certain themes show up over and over in the game, the notes, and earlier games, and choosing among them is the challenge.

perrypawnpusher - scarsetto

blitz 5 5, FICS, 2017

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ 

I know that Alonzo Wheeler Jerome initially preferred 6.d4, but he never ran into the "pie-in-the-face variation" 6...Qh4!?.

I think I have tried 6.d4 only once, and, managed to swindle my way to a draw, after, of course, 6...Qh4. - perrypawnpusher - 4xe1, Chess.com, 2017 (1/2-1/2, 29).

For the record, The Database has 3,850 games with 6.Qh5+ (White scores 55%) and 1,608 games with 6.d4 (White scores 54%). Pretty even results.

6...Ke6 

The only other time that I have played scarsetto, a few years ago, he tried 6...Ng6 here. A dozen moves later, I hung my Queen: 7.Qd5+ Ke8 8.Qxc5 d6 9.Qe3 Nf6 10.O-O Kf7 11.f4 Rf8 12.f5 Ne5 13.d4 Neg4 14.Qd3 Kg8 15.h3 Bxf5 16.Rxf5 d5 17.hxg4 dxe4 18.Qxe4?? Nxe4 White resigned, perrypawnpusher - scarsetto, FICS, 2014. Ouch.

7.Qf5+ Kd6 8.f4 Nh6 

Black develops a piece, attacking White's Queen, making room for his Rook to come to f8, and not preventing his Queen from coming, if she wishes, to f6. Taken separately, these are good things, but they do not fit well in the current position - a sign of a defender who has either been surprised by the Jerome Gambit, knows little about it, or treats it with disdain.

Those who play the Jerome Gambit should take a look at the diagram and decide what they would do next. For encouragement, I can point out that there are 8 examples of this position in The Database. White scored 100%.

(It should be pointed out that there are only 3 games in The Database that contain Stockfish 8's recommendation, 8...Kc6, simply giving up the Black Knight. However, Black won all of them.)

9.Qxe5+ Kc6

Here perrypawnpusher - GPP, blitz, FICS, 2010 was awarded to White by ajudication. I was surprised, acutally, as previous ajudications that I had encountered seemed to have been based on simply counting up the material each side has - and here Black still has a piece for two pawns. That raises a couple of important questions: What is White's advantage? How does he win? 

10.Qd5+ Kb6 

It seems pretty clear at first glance that White has the advantage - Black's unsafe King is more significant than White's small material deficit. But does White have a checkmate, or will he merely win back another piece and hold a small advantage? In a blitz game, it is important to know which goal you are chasing after.

11.Nc3 

I was betting on "checkmate", although I hadn't analyzed how.

If Bobby Fischer ever said "Long analysis, wrong analysis" he probably also said "No analysis - you better have a ton of experience in that position and an awesome memory" (or, maybe not).

The computer places its bet on "win back another piece". Best according to Stockfish 6 is 11.Qb3+!?

To understand the recommendation move (beyond "patzer sees check, patzer gives check") it is only necessary to look at Black's possible response, 11...Kc6, when a reasonable continuation would be 12.Nc3 d5 13.Qb5+ Kd6 14.e5+ Ke6 15.Qxc5 and White is up a couple of pawns while Black's King is still uneasy.

A steadier response for Black is 11...Ka6, when White has to find 12.Qa4+ Kb6 13.b4!?, threatening to win the Bishop outright and making it possible to put his dark-squared Bishop on the long a1-h8 diagonal. Stockfish 8 recommends the return of the piece immediately with 13...Bxf2+, which shows a pretty good sense of humor for a computer.

Bishop retreats for Black complicate the position, and one example will show how. After 11...Ka6 12.Qa4+ Kb6 13.b4!? Be7 White has a whole lot to figure out, in a short amount of time: 14.Qa5+ Kc6 15.Nc3 a6 16.b5+ Kd6 17.Qb4+ Ke6 18.Qb3+ d5 19.Nxd5 Kf7 20.Nxc7+ Kg6 21.f5+ Nxf5 (returning the piece is best) 22.exf5+ Bxf5 

analysis diagram




Here, White is a couple of pawns up, and should continue to pressure Black with 23.Qg3+, or at least 23.0-0. He should not grab the a8 Rook, as that would be a delightful blunder, leading to immediate crushing pressure on his own King, starting with 23.Nxa8? Bh4+ 24.g3 Re8+, etc, and if White's King survives, his Queen won't. 


Eight years ago I played, instead of 11.Nc3 or 11.Qb3+, the central push 11.d4 - but that leads down another road, so perhaps that is best looked at in the next post.

[to be continued]