Saturday, September 23, 2023

Make the Best Move! (Part 2)

 



Make the Best Move! (Part 2)

(by Yury V. Bukayev)
Every chess beginner should learn strong combinations before learning to make risky attempts to use psychological blows sometimes. Here is my second and a very short lesson on the first moves of such combinations - the best first moves - where each such move is a King's Bishop sacrifice (or a pseudosacrifice).In this part I should give both easy and enough difficult tasks already. They are here.Task 1.(McDonnell A. - La Bourdonnais L., London, 1834, https://www.chessgames.com/perl/chessgame?gid=1001157 :

Find the best move.Solution: 9.Bxf7+!Note: Compare this game, please, with the game (2016) between the top GM Vachier - Lagrave M. and the top GM Nakamura H. (https://jeromegambit.blogspot.com/2021/11/jerome-gambit-origins-part-1.html )! Unfortunately, in 2021 both Rick Kennedy and I didn't know about this game of 1834, where a very strong Jerome-ish blow was made in a "World Championship Match" (roughly) game between two strongest players of that time - it's, probably, a record for very strong Jerome-ish opening blows ever.

Task 2.( Petrosian T. - Korchnoi V., Curacao, 1962, https://www.chessgames.com/perl/chessgame?gid=1081437 )
Find the best move.Solution: 15.Bxf7+!Note: It was a game of the Candidates tournament, and this tournament point was very important for the top GM Tigran V. Petrosian who won this tournament and then won the World Championship Match.

Task 3.( Petrosian T. - Korchnoi V., Curacao, 1962, https://www.chessgames.com/perl/chessgame?gid=1081437 )
Find the best move.Solution: 12.Bxf7+!Note: This move wasn't found by White during the game.

Task 4.( de Castellvi F. - Vinyoles N., Valencia, 1475, https://www.chessgames.com/perl/chessgame?gid=1259987 )

Find the best move.
Solution: 6.Bxf7+!Note: This move wasn't found by White during the game. It's the first known quasi-modern chess game! Consequently, 5...Bg4? in it is the first known serious mistake in quasi-modern chess! That's why the first Jerome-ish very strong opening blow in history could be made as a result of this first mistake. I'm congratulating all lovers of Bxf7+ with this fact!Contact the author: istinayubukayev@yandex.ru .

Friday, September 22, 2023

Slips in the Polerio / Abrahams Jerome Gambit


Slips happen.

Forewarned is forearmed.


onderch01 - Schizophrenics

5 0 blitz, lichess.org, 2022

1.e4 e5 2.Bc4 Bc5 3.Bxf7+ 

Mentioned by Polerio in the 16th century (see "Jerome Gambit: Early Sources") and Abrahams in the 20th century (see 'Tis A Puzzlement..." and "The Abrahams Jerome Gambit [Parts I & II]"), this relative / ancestor of the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) has shown up in interesting places (see Yury V. Bukayev's "Jerome Gambit: Morphy vs the Mefistopheles" for his take on the Polerio Knightless Jerome Gambit) and can feature play both similar to and different from the Jerome.

For some perspective, I visited the online lichess.org site, which has 599,481 games with this line, with White scoring 53%.

3...Kxf7 

It does not make much sense to decline the Bishop - except, perhaps, for psychological reasons - as 3...Kf8 (or 3...Ke7) 4.Bb3 is clearly better for White.

The lichess.org database shows only 4% of the Polerio / Abrahams gambits being declined.

4.Qh5+ g6 

This move is playable, although, again, similar to the Jerome, 4...Kf8 is strong; and 4...Kf6 can transpose to the Jerome proper after 5.Qf5+ Kd6 6.Nf3 Nc6.

5.Qxe5 Bxf2+ 


This is how Black maintains equality after bypassing 4...Kf8.

6.Kxf2 Nf6 

Now, things get a bit strange. True, this is a blitz game, but it is a 5-minute blitz game.

7.Nf3 Nc6 

Both players overlook the possibility of 7...Ng4+, forking the King and Queen.

8.Qc3

The Queen is still not out of danger. As with the previous move, she should have gone to f4.

8... Nxe4+ 9.Ke3 Nxc3 10.Nxc3 Re8+ 


Black is ahead a Queen for a Knight.

White does not have adequate compensation.

11.Kf2 Qf6 12.Rf1 Kg7 13.Kg1 d6 14.d3 Bg4 15.Nd1 Bxf3 White resigns




Thursday, September 21, 2023

Jerome Gambit: The SMH Variation

 


I have previously identified the "face palm variation" in the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Ng5+ see "Jerome Gambit: The Face Palm Variation" and "Jerome Gambit: Return of the Face Palm Variation") as something to be avoided.

Today, in wandering through The Database, I ran into what could only be called the "smack my head" variation. I share it with readers for the same reason we encourage people not to run with scissors:  scissors, themselves, are not bad; but, please, it is not safe to run with them.

Likewise, please, do play the Jerome Gambit, but not this way... 


NN - NN

2 1 bullet, lichess.org, 2023

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 

7.f4 d6 8.c3 

Preparing to play d2-d4.

There are 13 games in The Database with this position, all blitz or bullet.

For the record, 10 of the players with the White pieces are rated higher than I am.

8...Nd3+ 

This annoying move shows up in 6 games in The Database.

It is not a coincidence that White won 2 of the remaining 7 games.

9.Ke2 

See, now the White Rook can protect the Bishop, and the King can chase the enemy Knight away.

9...Nxf4+


Oh, never mind.

White resigned.


Wednesday, September 20, 2023

My Jerome Gambit Game as Black without My Rook on a8

 


My Jerome Gambit Game as Black without My Rook on a8

(by Yury V. Bukayev)

Michael Schwarz from Moscow (born in GDR) is my new acquaintance, an ordinary chess amateur. Recently he suggested me to play a handicap game against him, without my Rook 'a' or 'h'. 
I said him that it would be too brave for me for our first game, so I suggested him the following: I'll play as Black without my Rook on a8, but he'll play the standard system of the Jerome gambit. He wasn't acquainted with it, so I explained him that it is Giuoco Piano with 4.Bxf7+, where after 4...Kxf7 White can make the good move 5.Nxe5+ or its alternatives. Moreover, I suggested him 3 0 blitz time control, and he agreed. Here is our yesterday's game.
            Schwarz Michael  -  Bukayev Yury
thematic Jerome gambit game, without Rook on a8,
                    3 0 blitz, Moscow, 2023
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5
                    

White stands better because of the absence of Black's Rook. Unfortunately for Michael, he has touched his King with a silence after my Knight's capture, so he has chosen among King's moves after it.
6.0-0 Qf6 7.d4 Bxd4 
               

8.c3 Bb6 9.Kh1 d6 10.f4 Ng4 11.Qe2 Qh4 12.h3 Qg3
White resigned.
                     

We can see, my opponent made several large mistakes in this game (although the majority of them were "enough natural"), he saw my idea 6...Qf6 7.d4? Bxd4 8.Qxd4?? Nf3+ after my move 7...Bxd4 only. 
My defence 6...Qf6 AN was very strong, it was even better than 6...Bb6 AN, and I have solved to suggest the name for 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.0-0 Qf6 both here and in non-handicap chess (with Black's Rook on a8). Thus, I suggest to name it as ' L+S Golden Union defence ', where 'L' is a symbol of a Bishop in German chess notation , 'S' is a symbol of a Knight there, the union of Black's Bishop on c5 and Knight on e5 was really golden in this game, while, in contrast with it, an ordinary sum of these two Black's chess pieces is a usual case in Jerome gambit positions.
Dear Michael, thank you for the game! This game is enough important for theory.
Contact the author: istinayubukayev@yandex.ru 

Tuesday, September 19, 2023

Jerome Gambit: One More Thing...


In the following game we see angelcamina and his opponent battling over the board in another example of how the defender can "solve" the opening - at the cost of too much time on his clock.

Who is better? Who is worse? Who just ran ot of time?

One minute games are like that.

angelcamina - Gio777777777777

1 0 bullet, lichess.org, 2023

1. e4 e5 2.Nf3 Nc6 3.Bc4 

angelcamina has 1,005 games in The Database with this move order. He scores 62%.

 3...h6 

The Semi-Italian Opening, an interesting choice for Black.

Clearly he wants to keep an enemy piece off of the g5 square, even at the risk of slightly weakening his Kingside (especially the light squares), should he choose to castle there.

Stockfish 15.1 sees this as a better protection (about a pawn better) against the following sacrifice than 3...Bc5

4.Bxf7+

The Semi-Italian Jerome Gambit. 

angelcamina has only one game with this line in The Database.

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ng6 7.Qd5+ Ke8 8.Qf5 

There are 11 games with this position in The Database.the first 5 games are by computers; over all record 6 - 5.

Where will the attacked Knight go? It turns out it never moves.

8...N8e7 9.Qf3 c6 10.O-O Qc7 11 d4 d5 12.e5 Be6 


Black  has defended well, although there is usually something that White can focus on, even in that case. Here, the pieces on e6 and g6 give an idea.

13.Qd3 Bf5 14.Qd1 Be4 15.f3 Bf5 16.g4 Be6 17.f4 Bd7 18.f5 


Stockfish assesses the Black position as more than 4 pawns ahead.

However, in the real world, where each player has 60 seconds to win the game or be defaulted, the problem of the advancing "Jerome pawns" is not insignificant.

18...h5 

Fair enough: it is time to return some of the sacrificed material. (Another way was 18...Nh4 19.e6.)

19.fxg6 Nxg6 20.gxh5 Nh4 21.Qe1 Be7 

22.Qg3 Nf5 23.Qg6+ Kd8 24.Nc3 Be8 


Black hopes to eject the enemy Queen, the one piece that is giving him any trouble. However, this slip (tick, tick, tick) unprotects his Knight, and he surrenders his advantage.

25.Qxf5 Rxh5 26.Qf3 Qd7 27.Bf4 Rh3 28.Bg3 

In this position, White is a bit better - he is up a pawn - but it doesn't really matter, as he now won on time.


Monday, September 18, 2023

Jerome Gambit: HauntedKnight and DrMarlonsky



One reason that I chose the following game to share can be found in the notes - a game by HauntedKnight at FICS.

The Database shows that HauntedKnight has 839 Jerome and Jerome-ish games (scoring 55%), the earliest being from 2003 (which was a year earlier than I started playing the Jerome Gambit).

My first mention of HauntedKnight on this blog was the post Serious About Silliness from a dozen years ago.

But - back to the game at hand. DrMarlonsky has a lot of games in The Database, as well.


DrMarlonsky - ourleo

1 0 bullet, lichess.org, 2023

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 

The Two Knights Defense.

4.O-O Bc5 5.Bxf7+ 

After the Bishop is captured, this will be a transposition from the ordinary Jerome Gambit move order: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.O-O Nf6

5...Kxf7 6.Nxe5+ Nxe5 7.d4 Bd6 


On the surface, Black's Bishop retreat looks correct, as it will return a piece (Black has 2 extra) and get a pawn for it.

A closer look would suggest the straight-forward 7...Bxd4 and the practical 7...d5 are stronger. 

The advantage now goes to White.

With all of this it is important to remember that this is as 1-minute game, and thinking time is at a premium. Also, experience is significant: DrMarlonsky has over 1,200 games in The Database (scoring 57%); ourleo has 1.

8.dxe5 Bxe5 9.f4 Bxb2 

This time, instead of returning the piece for a pawn, the retreat 9...Bd6 was correct. 

10.Bxb2 Re8 


Black would like to castle-by-hand, but he never gets to.

An alternative: 10...d6 11.Bxf6 Qxf6 12.Nd2 (12.e5) 12...Qd4+ 13.Kh1 Rf8 14.Qh5+ Kg8 15.Nf3? (15.Rad1) 15...Qxe4 16.Ng5 Qg6 17.Qe2 b6 18.Qc4+ Kh8 19.Qxc7 Ba6 20.Rf2 Rac8?! 21.Qxd6? Qxd6 White resigned, HauntedKnight - castleden, 6 0 blitz, FICS 2010.

11.e5 Ng8 

Stockfish 15.1 suggests that Black might as well castle and forfeit his Knight - a sad state of affairs.

Also seen: 11...Nd5 12.Qxd5+ Kf8 13.Nc3 d6 14.Rae1 Be6 15.Qxb7 Rb8 16.Qxa7 Rxb2 17.exd6 (17.Rf2) 17...Qxd6 18.Ne4 (18.f5) 18...Qd4+? 19.Kh1? Qxa7 20.f5 Bd5 21.f6 Bxe4 22.fxg7+ Kxg7 23.Re3 Bxg2+ 24.Kxg2 Qxe3 25.Rf3 Rxc2+ White resigned, jdpz - afowlkes, 1 0 bullet, lichess.org, 2019

12.f5 


The "Jerome pawns" stare down the enemy King. 

Now all they need is a little help from their Queen.

12...d6 13.Qh5+ g6 14.Qxh7+ Kf8 15.e6 Qe7 16.Qxg6 Nf6 17.Bxf6 Qxf6 18.Qxf6+ Black resigned




Sunday, September 17, 2023

A Brief Time-Out

 




NN - perrypawnpusher

The above position from a recent 5-minute game of mine at FICS is one of those Good News / Bad News things that reflects the interesting nature of chess.

The Good News: I had the Black pieces, and checkmate of White is inescapable. Resignation by my opponent would be understandable.

The Bad News: However, at this point in the game I ran out of time. So - Black won on time?

Actually, not. 

A look at the FIDE competition rules (the United States Chess Federation and FICS website rules are similar) - Article 6: The chessclock - shows 

6.9 [I]f a player does not complete the prescribed number of moves in the allotted time, the game is lost by that player. However, the game is drawn if the position is such that the opponent cannot checkmate the player’s king by any possible series of legal moves. 

Since White has a lone King, he does not have sufficient material to deliver checkmate. Therefore, the game was drawn.