A48 East Indian Defense
Also filed here: London System, Queen’s Pawn Game, Torre Attack, Indian Defense.
A48 holds 16 named lines from five openings, most of them (seven) under London System. It leaves A46 (Indian Defense: Knights Variation) with 2...g6. None of its 16 lines contains a capture. That final move, by the g-pawn, covers f5 and h5 and opens a line for the bishop on f8.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | Nf3 | g6 |
Lines filed under A48
All 16 share their first four plies, the whole reference line and then split four ways at White’s move 3.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| East Indian Defense | (the shared start itself) | 4 | |
| London System | 3.Bf4 | 5 | |
| Torre Attack: Fianchetto Defense | 3.Bg5 | 5 | |
| London System | 3.Bf4 Bg7 4.e3 | 7 | |
| Queen’s Pawn Game: Barry Attack | 3.Nc3 d5 4.Bf4 | 7 | |
| Indian Defense: Colle System, King’s Indian Variation | 3.e3 Bg7 4.Bd3 d6 | 8 | |
| London System | 3.Bf4 Bg7 4.e3 d6 | 8 | |
| Queen’s Pawn Game: Barry Attack | 3.Nc3 d5 4.Bf4 Bg7 | 8 | |
| Torre Attack: Fianchetto Defense, Euwe Variation | 3.Bg5 Bg7 4.Nbd2 c5 | 8 | |
| London System, with Bd3 | 3.Bf4 Bg7 4.e3 d6 5.Bd3 | 9 | |
| London System, with Be2 | 3.Bf4 Bg7 4.e3 d6 5.Be2 | 9 | |
| Queen’s Pawn Game: Barry Attack, Tarzan Attack | 3.Nc3 d5 4.Bf4 Bg7 5.Qd2 | 9 | |
| London System, with Be2 | 3.Bf4 Bg7 4.e3 d6 5.Be2 O-O | 10 | Black castled |
| Queen’s Pawn Game: Torre Attack, Grünfeld Variation, Main Line | 3.Bg5 Bg7 4.Nbd2 d5 5.e3 O-O | 10 | Black castled |
| London System, with Be2 | 3.Bf4 Bg7 4.e3 d6 5.h3 c5 6.Be2 | 11 | |
| Queen’s Pawn Game: Barry Attack, Grünfeld Variation | 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Be2 | 11 | Black castled |
The road to A48
- 1.d4one earlier stop: A40
- 1...Nf6A45 Indian Defense
- 2.Nf3A46 Knights Variation
- 2...g6A48
The position after 2...g6
White has brought out the knight on f3; Black the knight on f6. White is to move and has 30 legal moves.
Codes that branch off from A48
The reference lines of one other code leave A48 from the position after 2...g6, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| A49 | 3.g3 | Indian Defense: Przepiorka Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A05 | Zukertort Opening | four squares: d2, d4, g6, g7 |
| A45 | Indian Defense | four squares: g1, f3, g6, g7 |
| A47 | Pseudo Queen’s Indian Defense | four squares: b6, g6, b7, g7 |
| E60 | Indian Defense: West Indian Defense | four squares: g1, c2, f3, c4 |
| D23 | Queen’s Gambit Accepted | five squares: c2, c4, g6, d7, g7 |
| A04 | Zukertort Opening | six squares: d2, d4, f6, g6, g7, g8 |
| A31 | English Opening: Symmetrical Variation, Anti-Benoni Variation | six squares: c2, c4, c5, g6, c7, g7 |
Where lines continue from here
Nine named lines filed under other codes pass through the position after 2...g6. Besides the codes above, they belong to D75, D77, D85, E60.