Chess Opening Theory/1. d4/1...Nf6/2. Bf4/2...e6
| Accelerated London (Horwitz defence) | |
|---|---|
|
a b c d e f g h 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 a b c d e f g h | |
Position in Forsyth-Edwards Notation (FEN) | |
| Moves: 1. d4 Nf6 2. Bf4 e6 | |
| Parent: Accelerated London | |
2...e6
2...e6 is a sideline. Black refrains from advancing in the centre yet and opens a line for their bishop. This position may also arise by transposition if White plays the London into Black's Horwitz defence: 1. d4 e6 2. Bf4 Nf6.
White usually continues 3. e3, though London system move orders are flexible and other moves like 3. Nf3 can be played and later transpose.
2...e6 is a move order variation that usually commits Black to playing against the London with ...d5 ...e6 and ...Nf6. This is because the pawn on e6 restricts the queen side bishop and prevents Bf5, as in the Steinitz Countergambit lines, and after e6 Black surely doesn't wish to reverse-course and play ...g6 and ...Bg7 for a King's Indian approach, leaving their d6 square weakened. Once Black plays ...d5 then play transposes. Black plans ...Bd6 to contest White's London bishop's control of e5. One move order is 3. e3 c5 4. c3 Nc6 5. Nd2 d5 6. Ngf3 Bd6 7. Bg3 O-O.
An alternative for Black is to play in a Queen's Indian defence fashion, with ...b6 and ...Bb7.
Theory table
Category:Book:Chess Opening Theory#1.%20d4/1...Nf6/2.%20Bf4/2...e6%20
1. d4 Nf6 2. Bf4 e6
| 3 | 4 | 5 | 6 | 7 | ||
|---|---|---|---|---|---|---|
| Reversed-Semi Slav/London | e3 c5 | c3 Nc6 | Nd2 d5 | Ngf3 Bd6 | Bg3 O-O | |
| Queen's Indian/London | ... b6 | Nf3 Bb7 | Bd3 Be7 | h3 O-O | O-O c5 |
References
See also
With 2...g6:
With other 2nd moves for Black: