A53 Old Indian Defense
A53 holds eight named lines, all under the name Old Indian Defense. It leaves A50 (Indian Defense: Normal Variation) with 2...d6. None of its eight lines contains a capture. That final move, by the d-pawn, covers c5 and e5 and opens a line for the bishop on c8 and the queen on d8.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | d6 |
Lines filed under A53
All eight share their first four plies, the whole reference line and then split three ways at White’s move 3.
| Name | After the shared start | Plies |
|---|---|---|
| Old Indian Defense | (the shared start itself) | 4 |
| Old Indian Defense: Aged Gibbon Gambit | 3.g4 | 5 |
| Old Indian Defense: Czech Variation, with Nc3 | 3.Nc3 c6 | 6 |
| Old Indian Defense: Czech Variation, with Nf3 | 3.Nf3 c6 | 6 |
| Old Indian Defense: Janowski Variation | 3.Nc3 Bf5 | 6 |
| Old Indian Defense: Janowski Variation, Fianchetto Variation | 3.Nc3 Bf5 4.g3 | 7 |
| Old Indian Defense: Janowski Variation, Grinberg Gambit | 3.Nc3 Bf5 4.e4 | 7 |
| Old Indian Defense: Janowski Variation, Main Line | 3.Nc3 Bf5 4.f3 | 7 |
The road to A53
- 1.d4one earlier stop: A40
- 1...Nf6A45 Indian Defense
- 2.c4A50 Normal Variation
- 2...d6A53
The position after 2...d6
Black has brought out the knight on f6; White has not yet moved a knight or bishop. White is to move and has 30 legal moves.
Codes that branch off from A53
The reference lines of two other codes leave A53 from the position after 2...d6, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| A54 | 3.Nf3 Bg4 | Old Indian Defense: Tartakower-Indian |
| A55 | 3.Nc3 Nbd7 4.e4 e5 5.Nf3 | Old Indian Defense: Normal Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A15 | English Opening: Anglo-Indian Defense | four squares: d2, d4, d6, d7 |
| A41 | Queen’s Pawn Game | four squares: c2, c4, f6, g8 |
| A45 | Indian Defense | four squares: c2, c4, d6, d7 |
| A51 | Indian Defense: Budapest Gambit | four squares: e5, d6, d7, e7 |
| A56 | Benoni Defense | four squares: c5, d6, c7, d7 |
| D06 | Queen’s Gambit | four squares: d5, d6, f6, g8 |
| D20 | Queen’s Gambit Accepted | four squares: c4, d6, f6, g8 |
Where lines continue from here
Six named lines filed under other codes pass through the position after 2...d6. Besides the codes above, they belong to E94.