Saturday, June 19, 2021

Time Bombs and Tactics



Analyzing positions and play from recent Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) games has gotten me thinking again about my theories of club chess play and improvement.


Time Bombs

As reflected in the blog post "Jerome Gambit: Boom!"

I have long subscribed to the "time bomb" notion in club chess: that players are apt to play reasonable chess until, suddenly, a cognitive "time bomb" goes off, and they make a blunder. The frequency of these "explosions"/blunders depends upon the level of skill of the player: strong players may slip only once a game (or even less often) while more "average" club players can have their "time bombs" go off much more often, even every other move.

Players improve as they catch their blunders before they play them, and as they begin to notice and punish their opponents' blunders. Hanging a piece (or overlooking an opponent's hanging piece) and missing an easy checkmate (falling into or delivering) are two of the biggest failings.

Improving your tactical skills can help you combat "time bombs". Fortunately, there are many sources for problems to work on and practice with, either in software for your computer or in book form. A "golden oldie" is Fred Reinfeld's 1001 Winning Chess Sacrifices and Combinations (yes, I know that there are problems with some of the problems), which many public libraries have, and which can be obtained as a used paperback for well under $10.

There are a number of free or low cost chess programs available that can be used to analyze your games after they are finished. (You should be going over all of your games, win or lose.) They can be very helpful in catching basic tactical oversights.

Increasing your understanding of the traps and dangers associated with the openings that you play is another way to begin to spread out your "time bombs". Following this blog, and playing over the games presented, should alert you to some of the Jerome Gambit's strengths and pitfalls. It also should help you understand various strategies behind the Jerome, and that will serve as a general guide to keep you out of some of the weeds.

It is useful to look at some of the quotes from a Chess.com article by penandpaper0089 titled "Amateur Chess is Mostly Tactics and That's Unfortunate For Me"

GM Magnus Carlsen when asked about what is important to breaking the 2000 barrier quotes:

"Studying tactics, I would say. Up to that level, most games are still decided by someone hanging a piece...or blundering a checkmate - haha"

But there's more:

"Until you are at least a high Class A player: Your first name is 'Tactics', your middle name is 'Tactics', and your last name is 'Tactics'." - FM Ken Smith

“Most class players are not triangulating each other to death”. - FM John Jacobs

The most striking however is this one:

"Thirty years ago, Teichmann said that chess is 99% tactics. And despite the enormous strides of chess theory since then, his percentage can only be reduced a few points

Many amateurs think that master games are usually decided by some deeply-laid plan covering all possibilities for at least ten moves.. That is what they conceive the grand strategy of tournaments to be. Actually, however, strategical considerations, while quite important, do not cover a range or depth at all comparable to the popular notion. Very often, in fact, sound strategy can dispense with seeing ahead at all, except in a negative or trivial sense. And it is still true that most games, even between the greatest of the great, are decided by tactics or combinations which have little or nothing to do with the fundamental structure of the game".     - GM Reuben Fine


Friday, June 18, 2021

Jerome Gambit: More Than Meets the Eye



The following position is worth some attention. It has something to say about the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) and its prospects. It also illustrates the complications that can lie beneath the surface of positions. 

 

iammahgoat - Ncg987

10 0 blitz, lichess.org, 2021


At this point, one of the players resigned.

I looked at Black's lead in material and his better development. I noticed that White had yet to castle, and that his King was staring at the enemy Queen and Rook along the dangerous e-file. 

So, I wasn't too surprised that it was White who resigned here.

I was in for a surprise, however, when I asked Stockfish 13 for its opinion. It assessed the situation as being a good time for Black to resign, as the computer evaluated White as being more than a Rook ahead.

Wow.

Things were a lot more complicated than I realized.

So, what really was going on here?

First, I checked the times used, as sometimes a player will resign just before his flag fell. No, it looks like he still had about 5 minutes left on his clock.

What should have happened next in the game? The key for Stockfish's optimism was 

19.Nd5 

Black has a couple of responses, one seemingly more reasonable than the other.

If 19...Qd8, he guards against the deadly Knight fork on c7, but White's idea can unfold quickly: 20.Rg1 Ne6 21.Qg6+ Kg8 22.Bh6 Re7 23.Nxe7+ Qxe7 24.Bxg7 Qxg7 25.Qxg7+ Nxg7 26.h6 Be8 27.Rxg7+ Kh8 28.0-0-0




analysis diagram




The direct attack on Black's King has led to a position where White's pieces are more active, and his extra pawns are more deadly.

Black could also try 19...Qd8  20.Rg1 Re7, although after 21.Nxe7 Qxe7 22.Qxg7+ Ke8 23.Qxe7+ Kxe7 24.Be3 cxd4 25.Rg7+ Ke6 26.Bxd4 Bc6 27.h6 




analysis diagram




White's Rook dominates the position and his pawns will bring eventual victory.

Black might do a bit better with the pardoxical 

19...Qe6 

allowing the Knight fork of 2 Rooks and a Queen. The play would be wild after 20.Nc7 Qf6 21.Nxa8 Ne6 22.Qg6+ Kg8 23.Qxf6 Nxf6 24.d5 Nd4 25.Nc7 Rc8 26.Bf4 Nxc2+ 27.Kd2 Nxa1 28.Bxd6




analysis diagram





White has a pawn advantage.

Instead of harassing the enemy Queen, White would do better with

20.Rg1 g6 21.Be3 

Stockfish 13 prefers this to 21.Nc7 as it sees that 21...Qf6 22.Nxa8 Rxa8 is not quite as strong - although still good for White.

21...Bc6 22.Qf4+ 

An intermezzo.

22...Nf6 23.Nc7 


Finally the best, as White can now grab material and reduce the position

23...Qe7 24.Nxa8 cxd4 25.Bxd4 Ne6 26.Qxf6+ Qxf6 27.Bxf6 

27...gxh5

The h-pawn could prove dangerous, otherwise.

28.Bh4 Rxa8 29.0–0–0


White is the exchange and a pawn (soon to be two pawns) ahead, and the "Jerome pawns" will eventually make their presence known.

All of this is easy for me to do, sitting at my computer, with an unlimited amount of time (and Stockfish 13) to assess the situation. iammahgoat, playing White, did not have such luxuries, and I hope I have shown the difficulties that faced him in evaluating his situation.



Thursday, June 17, 2021

Jerome Gambit: "Automatic" Recaptures



Black does well in the following Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) until he falls prey to an automatic recapture he should have avoided. Sometimes even good positions have their dangers for the less careful player.


iammahgoat - AkaBiru1417

10 0 blitz, lichess.org, 2021


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8

7.Qxe5 d6 8.Qg3 Qf6 9.d3 Be6 10.h3 11.Nc3 c6

As Black develops his pieces, his King grows safer. What should his game plan be? Exchanging Queens is a good idea.

12.Bg5 Qg6 13.f4 h6 

The enemy Bishop is in the way of the proposed exchange, so why not kick it away? There is an oversight lurking, however.

14.Bxe7+ 

Here is the problem. The Bishop moves - with check.

14...Kxe7 

This automatic recapture overlooks the fact that his Queen is unprotected. White is better after 14...Kf7 15.Qxg6+ Kxg6 16.f5+ Kf7 17.Bh4 Bd7 18.Bf2 Bb4 19.0–0–0 Rae8 20.a3 Ba5 21.g4 but after the text move, the game is over.

15.Qxg6 Black resigned




Wednesday, June 16, 2021

The Nightingale Gambit etc. (C70, C20, C60): Bombs


 The Nightingale Gambit etc. (C70, C20, C60): Bombs 

 

(by Yury V. Bukayev) 

 

 

In this our analytical investigation we’ll consider the enough strong attack which is common for some different opening systems (the Nightingale gambit – C70, the Woman Player’s Luck opening – C20 and the Popov variation – C60). 

 

Part 1: The Nightingale gambit (C70) 

 

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.Bxf7+!? [This variation of the Spanish game (Ruy Lopez opening, C70) has a traditional name “the Nightingale gambit”.] 6…Kxf7 7.Nxe5+ Ke7 8.Nf7!? Kxf7 9.Qh5+ g6! [9…Ke7?! 10.Qe5 Kf7 11.Qd5 Ke8 12.Qa8, and White has an advantage] 10.Qd5+ Kg7! 11.Qxa8 

 

  1. 11…Nc6  

[The modern chess opening theory considers this line as Black has a large advantage”, as the proof of a weakness of White’s move 8.Nf7.] 12.c3! AN [This move makes 8.Nf7 playable and, moreover, makes it enough good.12…Nf6! [12…Ne5 13.Qd5! (White plans to save the Queen by Qd5-d4-e3 if it’s necessary.) 13…Qf6 14.0-0! Ne7 15.Qd4 Nec6 16.Qe3 with a complicated fight.] 13.d3 [13.f3?! Ne4! 14.fe Qh4!; 13…Ne5 14.Ke2! with a complicated fight; the gambits 13.d4!? and 13.0-0!? are not bad, and the position is unclear in both cases] 13…Ne5! 14.Bg5! with the unclear position. Thus, the ways 14…h6 15.Bxf6+ Kxf6! 16.0-0! (or even 16.Ke2!?) and 14…Be7 15.Ke2!? lead to a complicated fight with unclear positions. [The “natural” move 14…Nd3?? is a mistake: 15.Ke2!. White wins. For example: 15…Ne5 16.f4! d6 (with the idea 17.fe?? Bg4!) 17.Bf6!. After 14…h6 15.Bf6 Kf6! 16.0-0! the “natural” move 16…Nd3? is a mistake too: 17.Qd5 Ne5 18.Qd4 Ke6 19.f4 Nf7 20.f5; 19...Nc6! 20.f5.] 

 

This defence no.1 in our analysis shows also that “the Nightingale gambit” isn’t a true gambit, in fact. Of course, White can choose another move instead of 8.Nf7 (analogously to the Queen’s gambit accepted where White can choose not 3.Qa4 Nc6 4.e3), but “the Nightingale gambit” isn’t a true gambit in this case too (analogously to 2.c4 after 1.d4 d5). Moreover, it isn’t even a pseudogambit: two minor pieces and one Rook with two pawns have only an approximately equal material value. 

In fact, we can receive a related true gambit (C70) in the Chase variation (3…a6 4.Ba4 b5 5.Bb3 Na5) after 6.d4 exd4!?: it is 7.Bxf7+?! AN. The name “the Chase variation” has a lot of synonyms (Taimanov variation, Norwegian variation, Norwegian defenceWing variation, Accelerated counterthrust variation etc.), but it is the most correct of all used names, its best translation into Russian is “вариант «Погоня». [Thus, the name “the Accelerated counterthrust variation” isn’t very good, because the Bird’s defence 3…Nd4 is more accelerated Knight counterthrust and because the Exchange variation 3…a6 4.Bxc6 is also Black’s accelerated Pawn counterthrust in comparison with a-Pawn counterthrust in the Yanish gambit (Jaenisch gambit) 3…f5 4.Nc3 fxe4 5.Nxe4 a6!? AN, for example (here after 5a6!? the position is unclear).] We suggest the name “the Chase First gambit” for 7.Bxf7+?! (its translation into Russian is “первый гамбит варианта «Погоня»”). Its consideration isn’t a topic of this investigation. 

Moreover, this defence no.1 in our analysis shows also the bright example of Wilhelm Steinitz’s fighting strong King in Open Games, and it is centralized (Ke1-e2) not as a result of an opponent’s check in some cases. 

  

  1. 11…Qg5!? AN  

[Several other moves are possible too, but this move is the most dangerous for White besides 11…Nc6.]  

  1. 12.Qxc8 Qxg2! 13.Qxd7+ Be7! 14.Rf1 Qxe4+! 15.Kd1 Qf3+! 16.Ke1 Qe4+! = 

B) 12.b4 Bb7! [12…Qg2? 13.Bb2 Kf7 (13…Nf6 14.Bf6!) 14.Qd5 with 15.Rf1 (White stands better).] 13.Bb2+  

B1) 13…Kf7 14.Qa7 Qxg2! 15.Rf1 Qxe4+! 16.Kd1 Qf3+! [16…Qg2 17.Re1 Bf3 18.Kc1 Nc6 19.Qe3. White stands better.] 17.Kc1 Qe2 [17…Nc4 18.Bh8! Qe2 19.Rd1, and White stands better.] 18.Rd1 Bb4 19.Qe3 with the unclear position. 

B2) 13…Nf6 14.Qd8!  

x) 14…Nc6 15.Qxd7+! Ne7 [15...Be7 16.0-0! with the advantage] 16.Qd4 Nc6 17.Qxf6+ Qxf6 18.Bxf6+ Kxf6 19.c3 Ne5 20.f3! with the advantage. 

y) 14…Bxb4 15.Qxd7+! =. 

 

Part 2: The Woman Player’s Luck opening (C20) 

 

The above new analysis of the Nightingale gambit allows to get new appraisals of some systems of the Woman Player’s Luck opening (the Bednikova opening, C20): 

 

I) 1.e4 e5 2.b3 Nf6 3.Nc3 Bb4 4.a3!? AN Ba5 [4…Bc3 5.dc, and White has a good positionbecause after 5…Ne4?! White gets an advantage: 6.Qd5 (or 6.Qg4) 6…Nc3 7.Qe5 Qe7 8.Qe7 Ke7 9.Bb2 with 10. Bg7.] 5.b4!? Bb6 6.Na4 [We can see the Chase variation reflected here. If you play as White and know that your opponent likes the Nightingale gambit very much (when he plays as White) and if you want to play against it, then the Woman Player’s Luck opening is an excellent way for you to start this game.] Thus, after 6…Bxf2+!? we can see the Nightingale gambit reflected.  

 

II) 1.e4 e5 2.b3 Nf6 3.Nc3 Bc5 4.Na4!? Bxf2+!? 5.Kxf2 Nxe4+ 6.Ke2 Nf2!? AN [Our first novelty was 4.Na4 herebut it was published (with our whole tree of subvariations) in our article ‘The Only Opening Named after a Woman: the New’ on the page “Bruno’s Chess Articles”, so it’s a part of the modern chess opening theory now.] 7.Kxf2 Qh4+ 8.g3! [8.Ke2?! Qe4 9.Kf2 Qd4 10.Ke1 Qa1, and Black has an advantage] 8…Qd49.Kg2! Qxa1 10.Nc3!?  

  1. 10…c6?! 11.Nf3. Here the way 11…d6? 12.Ne4 Bg4 is badbecause after 13.Nxd6+! Ke7 14.Ne4(with the idea 14…f5?? 15.Ba3 and 16.Qa1) White wins. Black can play 11…d5 or 11…0-0 instead with White’s response 12.Nxe5 in both cases, but White has a large advantage in both cases, because White can play 13.Ba3!? Qxd1 14.Nxd1. Also Black can play 11…e4 12.Nxe4 0-0!but after 13.Nc3!? White plays 14.Ba3!? and has a large advantage too. 

  1. 10…b6 11.Be2 Bb7+ [or 11…Na6!? with the unclear position] 12.Bf3 Nc6 with the unclear position. 

  1. 10…0-0 [It’s a sacrifice of the c-pawn.] 11.Nd5 Nc6 12.Nxc7 Rb8 13.a3 Qd4!? with the unclear position. 

 

Part 3: The Popov variation (C60) 

 

Easily each Internet user can find initial stages of two games with the Spanish opening (Spanish game, C60) by the Bulgarian ICCF GM Georgi Popov where he has played successfully as Black: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a5!? with the move 4…Na7 after 4.d3?! (against Mr. Nikolov, 1990) and after 4.0-0! (against Mr. Kuczynski, 1991). Thus, several experts call 3…a5 as “the Popov variation” (or as “the Bulgarian variation /defence), other experts use this name for 3…a5 4.d3 Na7 and 3…a5 4.0-0 Na7 only. The move 3…a5 isn’t a very good defencebut the modern chess opening theory doesn’t give real proofs for this conclusion. Our new following analysis permits to get these proofs for these two lines. 

 

I) 1.e4 e5 2.Nf3 Nc6 3.Bb5 a5!? 4.d3?! Na7 5.Bc4! [It’s our new appraisal of this move. The way 5.Ba4 b5 6.Bb3 is good too, and it’s also our new appraisal.] 5…b5 6.Bb3 [6.Bf7! AN is good too.] 6…a4 7.Bxf7+! AN Kxf7 8.Nxe5+ Ke7 9.Nf7![Other moves will not be considered here, although there are some strong attacking ones among them.] 9…Kxf7 10.Qh5+ g6 [10…Ke7?! 11.Qe5 Kf7 12.Qd5 Ke8 13.Qa8, and White has an advantage] 11.Qd5+ Kg7 12.Qxa8 Nc6  

A) 13.c3 with a complicated fight where White gets an advantage. 

B) 13.Be3 with a complicated fight where White gets an advantage. 

C) 13.Na3 Bxa3 [13…Nb4 14.Be3 with the advantage; 13…Nd4 14.Qd5 with the advantage] 14.bxa3 Nf6! 15.Bb2, and White gets an advantage. 

 

II) 1.e4 e5 2.Nf3 Nc6 3.Bb5 a5!? 4.0-0! Na7 5.Bc4! AN [The little-known way 5.Ba4 b5 6.Bb3 a4 7.Bf7! is good too.] 5…b5 6.Bb[6.Bf7! AN is good too.] 6…a4 7.Bxf7+! Kxf7 8.Nxe5+ Ke7 9.Nf7! [Other moves will not be considered here, although there are some strong attacking ones among them.] 9…Kxf7 10.Qh5+ g6 AN [10…Ke7?! 11.Qe5 Kf7 12.Qd5 Ke8 13.Qa8, and White has an advantage] 11.Qd5+ Kg7 12.Qxa8 Nc6 13.c3! with a complicated fight where White gets an advantage. 

 

Moreover, it should be added that 4.Nc3 [GM Lubomir Kavalek recommended it in his newspaper chess column in 1998, May 4, as the best move and as the refutation of the Popov variation“Of course, after 3…a5 white plays 4.Nc3 and the Bulgarian defense is shelved”.] should be met by 4…Nd4! AN, and the position is unclear [Black has or the equal position, or even the advantage]. 

 

Note 1: Everywhere in the text the words “we” and “our” mean “author” and “author’s”. 

Note 2: Author’s theoretical novelties-moves are marked by the symbol “AN”. 

 

Contact the author:  istinayubukayev@yandex.ru  or  Facebook  

 

 

© 2021 Yury V. Bukayev (Copyright © Bukayev Yury Vyacheslavovich 2021). All rights reserved.  

[A legal using of this investigation with a reference to it is permitted  

and doesn’t require author’s consent.]