OpenLLM-France/wikimedia huggingface dataset:
# Chess Opening Theory/1. e3/1...e5/2. e4
## 1. e3 e5 2. e4 - King's Isa Reverse Opening

An irregular opening, considered somewhat passive. Play may transpose to lines of the Chess/Reverse Petrov Defense (Nf6–Nf3), Chess/Reverse Englund Gambit (e4–d5), or reversed Rousseau Gambit (Nf6,Nc3-Bc5,f4).
The King's Isa Reverse Opening is not popular. According to ChessBase, it ranks eleventh in popularity out of the twenty possible first moves.
After Van't Kruijs Opening 1.e3 e5, White play 2.e4!? , therefore making it a truly reversed Double King's Pawn Opening (or Open Game). This is often used when White has much knowledge of the opening when playing as Black. Therefore, this can be used to ensnare a few opponents into traps. However, since this gives the first move advantage to Black straight away, this is not recommended. Similarly, 1.e3 f5 2.e4 goes to a reversed From's Gambit, where White is practically playing as Black.

## Statistics

Not enough data as opening is rarely played.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .

## Theory table

    1. e3-e5
    2. e4
| | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Chess/Blackburne Shilling Gambit | Nf6 | Nc3 Bc5 | Nd5 Nxd5 | exd5 c6 | Nf3 0-0 | d4 exd4 | Nxd4 cxd5 | c3 Nc6 |
| Chess Rousseau Gambit Reverse | Nf6 | Nc3 Bc5 | f4 d5 | exd5 Nxd5 | Nf3 Nxf4 | d4 exd4 | Bxf4 dxc4 | Qxd8 Kxd8 |
| Chess Stafford Gambit Reverse | Nf6 | Nf3 Nxe4 | Nc3 Nxc3 | dxc3 | | | | |
| Chess Jaenisch Gambit Reverse | Nf6 | Nc3 Bb4 | f4 Nc6 | fxe5 Nxe5 | Nf3 | | | |
| Chess Giuoco Piano Reverse | Nf6 | Nc3 Bc5 | Bc4 0-0 | Nf3 | | | | |
| Chess Two Knight's Defence Reverse | Bc4 | Nf3 Nf6 | Nc3 | | | | | |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

https://lichess.org/study/bOtkXznC
* Template:Lichess
# Nimzowitsch Defence: Pseudo-Spanish Variation
## 2. Bb5
## References

1. e4 Nc6 2. Bb5
# English, Three Knights System
### 3. Nf3
## Theory Table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 e5 2.Nc3 Nc6 3.Nf3
| 3 | 4 |
| Nf3 Nf6 | g3 Bb4 |
| ... g6 | d4 exd4 |
| ... f5 | d4 e4 |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
* Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
* This Chess related article is a stub. Please assist Wikibooks by expanding it.
# English Opening
## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 c6 2.Nf3 d5
| 3 | 4 |
| g3 Nf6 | Bg2 Bg4 | = |
| b3 Nf6 | g3 Bg4 | = |
| e3 Nf6 | Nc3 e6 | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
* This Chess related article is a stub. Please assist Wikibooks by expanding it.
# English Opening
### 2...Nc6

A good second move for black, 2...Nc6 keeps most options open for black including the possibility of transposition into the English four knights variation after 3.Nf3. Black must choose how to develop after this move; for instance more often than not white will fianchetto his light-squared bishop and pursue a q-side attack; in those cases it may be desirable to play f5, since the pawn duo on f5 and e5 along with a knight on f6 more often than not will present a formidable front with good counterplay possibilities vs a q-side attack by white. However as in most k-side pawn attacks black should be careful not to overextend these pawns as doing so might get them restrained and then destroyed by white, effectively putting black on the defensive.
Aside from the English four knights the main option for white is to prepare a q-side attack by playing the bishop to g2, the king´s knight to e2 and the rook to b1; different move orders are possible but the idea is the same: to achieve a beneficial pawn break on d4 (ideally exchanging black's e pawn, for example: e3, Ne2, d4 and after black takes the d pawn white recaptures with his e pawn effectively increasing his power on the center and q-side while at the same time weakening black's counterplay) and/or to support a pawn advance to b4 (a3 and Rb1 are good moves for this purpose). Using the subsequent spatial advantage on the q-side while neutralizing black's counterplay on the opposite wing does require some skill however and white is best advised not to neglect his k-side in favor of an all out q-side attack and to seek the restraint and destruction of black's f and e pawns, for example after 3.g3 f5 4.e3 Nf6 5.Nge2 Bb4 6.Bg2 0-0 7.0-0 d6 8.d4 +/=, and should black push his e pawn to e4 white can undermine it with f3 and get an open file for the rook on f1 in the process.

## Theory Table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 e5 2.Nc3 Nc6
| | 3 | 4 |
| English | g3 g6 | |
| English | Nf3 Nf6 | |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
* Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
# English Opening: Anglo-Scandinavian Defence

May transpose into the Queen's Gambit or the Réti Opening. Capturing the pawn gives White a small advantage.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 d5
| | 2 |
| Malvinas Variation | cxd5 Qxd5 | Nc3 Qa5 | += |
| Loehn Gambit | ... e6 | | += |
| Schulz Gambit | ... Nf6 | | += |
| Queen's Gambit | d4 ... | | = |
| Réti Opening | Nf3 ... | | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Unorthodox Chess Openings (1998). Eric Schiller. ISBN 0-940685-73-6.
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
* This Chess related article is a stub. Please assist Wikibooks by expanding it.
# English Opening: Loehn Gambit

White has a choice between accepting or declining the gambit.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 d5 2.cxd5 e6
| 3 |
| dxe6 Bxe6 | += |
When contributing to this Wikibook, please follow the Conventions for organization.
# English Opening: Schulz Gambit

White has a choice between protecting or ignoring the pawn.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 d5 2.cxd5 Nf6
| | 3 | 4 | 5 | 6 |
| Anglo-Indian Defence | Nf3 Nxd5 | d4 g6 | e4 Nb6 | h3 Bg7 | += |
| | e4 c6 | dxc6 Nxc6 | Nc3 e5 | Bb5 Bc5 | = |
When contributing to this Wikibook, please follow the Conventions for organization.
# English Opening
### 2.Nc3

An instant way of reinforcing the attack on d5, Nc3 is the standard second move of the independent lines of the English opening. This move is also useful because it allows 3.Nf3, although some players prefer to play the Bremen System with 3.g3 preparing for 4.Bg2, and thus increasing control over d5 and keeping two good options for the development of the king's knight (a standard Nf3 or Ne2, which keeps the long diagonal open and offers some protection against the pinning and possible exchange of the other knight).
The flexibility of the English opening also applies for the black side which must choose how to develop after this move. While 2...Nf6 is flexible and provides some control over d5, 2...Nc6 is also possible, leading to sharp variations where white will have the initiative on the q-side with moves such as e3, Nge2, d4, Rb1 and b4, while black will have some counterplay on the opposite wing by advancing his k-side pawns, threatening to put the white king in some serious jeopardy.
Another black option is 2... Bb4, which allows Nd5 chasing the bishop, but the resulting poistion is unclear, so most players choose to play a more passive move such as 3. e3 or 3. Nf3, which allows black to take and try to place pawns on dark squares to create an imbalanced and double-edged position.

## Theory Table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 e5 2.Nc3
| | 2 | 3 |
| English | ... Nf6 | Nf3 | +/= |
| English | ... Nc6 | g3 | +/= |
| Kramnik-Shirov Attack | ... Bb4 | Nd5 a5 | ∞ |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
# English Opening
## 1...e5

This move creates a reverse Sicilian but it's White's move and the aim for White to create an advantage leads generally to different positions. White's choices are now:
   * 2. Nc3, the normal move
   * 2. g3 many transposition possibilities
   * 2. Nf3 can lead to a reversed Alekhine's Defence of sorts if Black replies with ...e4, with the option of cxd5 if Black tries to advance the d-pawn
   * 2. d4 gives away any advantage

# Theory Table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
    1.c4 e5
| | 2 | 3 | 4 | 5 |
| | Nc3 Nc6 | g3 g6 | Bg2 Bg7 | d3 d6 | |
| King's English Variation, Kramnik-Shirov Counterattack | Nc3 Bb4 | Nd5 Bc5 | Nf3 c6 | Nc3 d6 | |
| | g3 Nf6 | Nc3 Bb4 | | |
| Drill Variation | ... h5 | | | | += |
| | d4 | | | | ∞ |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
* Taming Wild Chess Openings: How to Deal with the Good, the Bad and the Ugly over the Chess Board (2015). John Watson. ISBN 9056915703.
# English Opening
## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 c6 2.Nf3 d5
| 3 | 4 | 5 |
| b3 Nf6 | g3 Bg4 | Bg2 e6 | = |
| ... Bg4 | Ne5 Bh5 | Bb2 Nd7 | ∞ |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Nunn's Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. ISBN 1-8574-4221-0.
* This Chess related article is a stub. Please assist Wikibooks by expanding it.
# English Opening: Anglo-Scandinavian Defence
### 2.cxd5

Black has a choice between four main options - Qxd5, e6, Nf6 and c6.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1.c4 d5 2.cxd5
| | 2 | 3 | 4 | 5 | 6 |
| Malvinas Variation | cxd5 Qxd5 | Nc3 Qa5 | d4 Nf6 | Bd2 e5 | e4 c6 | += |
| Loehn Gambit | ... e6 | | | | | += |
| Schulz Gambit | ... Nf6 | | | | | += |
| 2...c6 | ... c6 | dxc6 Nxc6 | | | | += |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Unorthodox Chess Openings (1998). Eric Schiller. ISBN 0-940685-73-6.
# London System Indian Setup with 2. Bf4 -

Playing 2. Bf4 leads to the London System for white but can easily transpose into other lines. The London System is a Queen's pawn opening where White develops their dark squared bishop to f4 to avoid blocking it in with pawns on c3 and e3. White plans to close the position while strengthening the centre with Nd2 and developing the light squared bishop to d3. It can be used against nearly all of Black's common replies to 1. d4 including the Indian Defence. The most common move for Black in this position is 2...d5.
For a general introduction to the London System, take a closer look at 1. d4 d5 2. Bf4

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. Bf4
| | 2 | |
| (to) Main Base Position | ... d5 | = |
| London System Indian Setup with early Bf4 and Black ...e6 | ... e6 | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Chess Opening Crash Course: The London System
* Win with the London System. 2005. Sverre Johnsen, Vlatko Kovačević. ISBN 1-9046-0035-2.
# Chess Opening Theory/1. d4/1...Nc6/2. d5/2...Ne5/3. f4/3...Ng6/4. e4/4...e5/5. fxe5
## 5. fxe5??

This move is the 4th most popular in the Lichess Database, but it is a blunder. After 5...Qh4+ Black has a winning position.
Mikenas Defense :
| | a | b | c | d | e | f | g | h | |
| 8 | | | | | | | | | 8 |
| 7 | | | | | | | | | 7 |
| 6 | | | | | | | | | 6 |
| 5 | | | | | | | | | 5 |
| 4 | | | | | | | | | 4 |
| 3 | | | | | | | | | 3 |
| 2 | | | | | | | | | 2 |
| 1 | | | | | | | | | 1 |
| | a | b | c | d | e | f | g | h | |
# London System Main Base Position with ...d5

The London System is a Queen's pawn opening where White develops their dark-squared bishop to f4 in order to provide additional flexibility in what will become a closed position. After Black develops to d5 and Nf6, White plans to place their King's knight on f3 and pawns on e3 and c3 to strengthen their center before developing the light-squared bishop to d3. It can be used against nearly all of Black's common responses to 1. d4, including 1...d5. From this position, White usually plays 3. e3 or 3. Nf3 for the London System, or less commonly 3. Nc3 for the Jobava London System.
The Main Position of the London System, 1. d4 Nf6 2. Bf4 d5, can be reached via the Queen's Pawn Opening after 1. d4 d5 2. Bf4 Nf6.
Sometimes, the initial position setup is sometimes called the "Accelerated London System" or "Mason Attack" because James Mason was historically the first chess player to introduce 2. Bf4.
For a general introduction to the London System, take a closer look at 1. d4 d5 2. Bf4

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. Bf4 d5
| | 3 | |
| (to) Main Line | ... e3 | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* ↑ Stephan Oliver Platz (2019). James Mason and the London System. Germany: Chessbase.Com.

### Bibliography

* Win with the London System. 2005. Sverre Johnsen, Vlatko Kovačević. ISBN 1-9046-0035-2.
* Chess Opening Crash Course: The London System
# Queen's Pawn Game: Colle System
### 3...d5

* This Chess related article is a stub. Please assist Wikibooks by expanding it.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. Nf3 e6 3. e3 d5
| | 4 | 5 |
| Rubinstein Opening | Bd3 c5 | b3 Nc6 | = |
| | c4 | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. ISBN 0-8129-3084-3.
# East Indian Defence
### 2...g6

A transposition position as White has yet to commit to playing c4, and Black has not committed the d-pawn to either d5 or d6.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation.
1. d4 Nf6 2. Nf3 g6
| | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | | |
| King's Indian Defense | c4 Bg7 | Nc3 | | | | | | | | transposition: 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 |
| King's Indian Defense | g3 Bg7 | c4 | | | | | | | | |
| | Bg5 Bg7 | Nbd2 d6 | e4 O-O | c3 c5 | dxc5 dxc5 | Be2 Nc6 | h3 Qc7 | O-O h6 | ∞ | |
| | Bf4 | | | | | | | | | |
| | Nc3 | | | | | | | | | |
| | e3 Bg7 | Be2 Ne4 | 0-0 d5 | | | | | | = | |
| | e3 Bg7 | Be2 Ne4 | 0-0 d5 | g3? Bh3 | Re1 Qd6 | Bf1? Qe6 | | | =/+ | |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.

## External links

* 365Chess. 1.d4 Nf6 2.Nf3 g6
* chessgames. 1.d4 Nf6 2.Nf3 g6
# Indian Defence
### 2. c4

2. c4 strengthens White's control of the center, particularly the important d5 square. It also allows White's queenside knight to develop to the active c3 square without blocking the c-pawn.
Black has a number of possibilities at this point:
* 2...e6 – This move is solid and flexible. Depending on how white plays, Black will end up in a Queen's Indian, Nimzo-Indian, Bogo-Indian, Queen's Gambit Declined, Benoni, or a Catalan.
* 2...g6 – This tends to be more aggressive (and riskier), though still solid if one knows the important strategic points. Black has the choice to move into a King's Indian Defence (KID) (regardless of white's play) or possibly a Grünfeld if White plays 3. Nc3 and Black wishes.
* 2...c5 – This will likely end up being a Benoni (often aggressive, risky), Benko Gambit (positional pawn sacrifice by Black on queenside), a symmetrical English (a bit quieter, but active pieces), or even a Tarrasch QGD (active for both sides).
* 2...d6 – This is the so-called "Old Indian," and it can either transpose into a KID or follow less popular lines with a strategy similar to the KID.
* 2...e5 – The Budapest Gambit. It has a unique character and often allows Black active play. White usually gives the pawn back eventually, and usually gets a slightly better position, but Black can do well against an unprepared opponent.
* 2...d5 – The Marshall Defence. This is not the best idea, though not an absolute trap. Several opening encyclopedias give this a clear advantage to White if played right.
* 2...c6 – The rare Slav Indian, looking for a transposition to the Slav Defence. White typically allows this with 3. Nc3 or 3. Nf3, but can refuse with 3. Bf4.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4
| | 2 | 3 | 4 | 5 | 6 |
| King's Indian Defence | c4 g6 | Nc3 Bg7 | e4 d6 | Nf3 O-O | Be2 e5 | = |
| Grunfeld Defence | ... ... | ... d5 | cxd5 Nxd5 | e4 Nxc3 | bxc3 Bg7 | = |
| Benoni Defence | ... c5 | d5 e6 | Nc3 exd5 | cxd5 d6 | e4 g6 | +/= |
| Queen's Indian Defence | ... e6 | Nf3 b6 | a3 Bb7 | Nc3 d5 | cxd5 Nxd5 | +/= |
| Bogo-Indian Defence | ... ... | ... Bb4+ | Bd2 Qe7 | g3 Nc6 | Nc3 Bxc3 | +/= |
| Nimzo-Indian Defence | ... ... | Nc3 Bb4 | e3 O-O | Bd3 d5 | Nf3 c5 | = |
| Catalan Opening | ... ... | g3 d5 | Bg2 dxc4 | Nf3 Be7 | O-O O-O | = |
| Black Knights' Tango | ... Nc6 | Nf3 e6 | a3 d6 | Nc3 g6 | e4 Bg7 | +/= |
| Budapest Gambit | ... e5 | dxe5 Ng4 | Bf4 Nc6 | Nf3 Bb4+ | Nbd2 Qe7 | += |
| Old Indian Defence | ... d6 | Nc3 e5 | Nf3 Nbd7 | e4 Be7 | | +/= |
| Marshall Defence | ... d5 | cxd5 Nxd5 | Nf3 Bf5 | Qb3 | | +/= |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# Black Knights' Tango
### 2...Nc6

Black begins the game by developing both knights, keeping their central pawn options flexible. With the work of Georgi Orlov, this previously obscure opening has been given new life. White has a number of sensible replies, but the most common is 3. Nf3 to discourage the e5 break.
Sometimes also called the Mexican Defense or Kevitz-Trajkovich Defense. ECO listing is A50.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4 Nc6
| 3 | 4 | 5 | 6 |
| Nf3 e6 | a3 d6 | Nc3 g6 | e4 Bg7 | +/= |
| Nc3 e5 | d5 Ne7 | e4 Ng6 | Be3 Bb4 | ∞ |
| d5 Ne5 | e4 e6 | Qd4 Bb4+ | Bd2 Bxd2+ | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Georgi Orlov (1992), Black Knights' Tango, Batsford, ISBN 1879479036
* Georgi Orlov (1998),The Black Knights' Tango: Outwit Your Opponents from Move 2!, Batsford, ISBN 0713483490
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# King's Indian, Fianchetto without c4
### 3. g3
## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. Nf3 g6 3. g3
| | 3 | 4 | 5 |
| King's Indian Defense | Bg7 | c4 | |
| | d5 | Bg2 | |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# Black Knights Tango
### 3...e6

Opening the diagional for the Black Bishop to develop and supporting d5.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4 Nc6 3. Nc3 e6
| 4 | 5 | 6 |
| e4 Bb4 | f3 d5 | cxd5 exd5 | ∞ |
| Nf3 Bb4 | Qc2 d6 | Bd2 O-O | ∞ |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Georgi Orlov (1992), Black Knights' Tango, Batsford, ISBN 1879479036
* Georgi Orlov (1998),The Black Knights' Tango: Outwit Your Opponents from Move 2!, Batsford, ISBN 0713483490
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# Black Knights Tango
### 3. Nc3

White add pressure to d5 and supports a possible later e4. The downside is Black can free the e-pawn and pin the White Knight by playing Bb4.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4 Nc6 3. Nc3
| 3 | 4 | 5 | 6 |
| Nc3 e5 | d5 Ne7 | e4 Ng6 | Be3 Bb4 | ∞ |
| ... e6 | e4 Bb4 | f3 d5 | cxd5 exd5 | ∞ |
| ... d5 | cxd5 Nxd5 | e4 Nxc3 | bxc3 e5 | += |
| ... d6 | Nf3 e5 | d5 Ne7 | e4 g6 | += |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Georgi Orlov (1992), Black Knights' Tango, Batsford, ISBN 1879479036
* Georgi Orlov (1998),The Black Knights' Tango: Outwit Your Opponents from Move 2!, Batsford, ISBN 0713483490
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# Black Knights Tango
### 3. Nf3

With this common reply to the Tango White prevents Black from the central break e5. Black now has a choice of supporting a d5 or a e5 advance.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4 Nc6 3. Nf3
| 3 | 4 | 5 | 6 |
| Nf3 e6 | a3 d6 | Nc3 g6 | e4 Bg7 | += |
| ... e5 | d5 e4 | dxc6 exf3 | cxb7 Bxb7 | += |
| ... d6 | Nc3 e5 | d5 Ne7 | e4 Ng6 | += |
| ... d5 | cxd5 Qxd5 | Nc3 Qa5 | Bd2 Qh5g6 | += |
| ... g6 | d5 Nb8 | b3 Bg7 | Bb2 d6 | += |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Georgi Orlov (1992), Black Knights' Tango, Batsford, ISBN 1879479036
* Georgi Orlov (1998),The Black Knights' Tango: Outwit Your Opponents from Move 2!, Batsford, ISBN 0713483490
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.
# Black Knights Tango
### 3...e6

Black has a solid and flexible formation. The e6 pawn opens a line for the Black Bishop allowing a possible Bb4 which can transpose into a Nimzo Indian or a Bogo Indian defence. White's possible moves include playing a3 immediately to prevent Bb4 as well as development moves, Nc3, g3 and e3.

## Theory table

For explanation of theory tables, see theory table and for notation, see algebraic notation. .
1. d4 Nf6 2. c4 Nc6 3. Nf3 e6
| 4 | 5 | 6 |
| a3 d6 | Nc3 g6 | e4 Bg7 | += |
| Nc3 Bb4 | Qc2 d6 | Bd2 O-O | += |
| g3 Bb4+ | Bd2 Qe7 | Nc3 Bxc3 | = |
| e3 Bb4+ | Nbd2 a5 | Bd3 O-O | = |
When contributing to this Wikibook, please follow the Conventions for organization.

## References

* Georgi Orlov (1992), Black Knights' Tango, Batsford, ISBN 1879479036
* Georgi Orlov (1998),The Black Knights' Tango: Outwit Your Opponents from Move 2!, Batsford, ISBN 0713483490
* Kasparov, Garry, & Keene, Raymond 1989 Batsford chess openings 2. ISBN 0-8050-3409-9.