A68 Benoni Defense: Four Pawns Attack
A68 holds two named lines, all under the name Benoni Defense. It leaves A66 (Benoni Defense: Pawn Storm Variation) with 7...Bg7 8.Nf3 O-O. White, to move in that position, has 39 legal moves, the second-highest count of the 23 Benoni Defense codes. Of all other reference positions, the board of A69 (Four Pawns Attack, Main Line) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | c5 |
| 3 | d5 | e6 |
| 4 | Nc3 | exd5 |
| 5 | cxd5 | d6 |
| 6 | e4 | g6 |
| 7 | f4 | Bg7 |
| 8 | Nf3 | O-O |
The move that completes A68
The reference line of A69 plays all of these moves and continues beyond them; A68 is the position reached at 8...O-O.
- 8...O-O Black castles kingside, opening a line for the queen on d8, guarding the bishop on g7.
Lines filed under A68
Both share their first 16 plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Benoni Defense: Four Pawns Attack | (the shared start itself) | 16 | Black castled |
| Benoni Defense: Four Pawns Attack | 9.Be2 | 17 | Black castled |
Benoni Defense: Four Pawns Attack
- 9.Be2 The bishop leaves f1 for e2, opening a line for the rook on h1.
The road to A68
- 1.d4 … 5...d6five earlier stops: A40, A45, A50, A56, A60
- 6.e4A65 King’s Pawn Line
- 7.f4A66 Pawn Storm Variation
- 8...O-OA68
The position after 8...O-O
White has brought out the knight on c3 and knight on f3; Black the knight on f6 and bishop on g7. White has a half-open c-file; Black a half-open e-file.
Codes that branch off from A68
The reference lines of one other code leave A68 from the position after 9.Be2, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| A69 | 9...Re8 | Benoni Defense: Four Pawns Attack, Main Line |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A72 | Benoni Defense: Classical Variation | four squares: f1, e2, f2, f4 |
| E78 | King’s Indian Defense: Four Pawns Attack, Fluid Attack | six squares: f1, e2, c4, d4, d5, e7 |
| A62 | Benoni Defense: Fianchetto Variation | seven squares: f1, e2, f2, g2, g3, e4, f4 |
| A70 | Benoni Defense: Classical Variation | seven squares: f2, f4, g7, e8, f8, g8, h8 |
| A73 | Benoni Defense: Classical Variation, Main Line | seven squares: e1, f1, g1, h1, e2, f2, f4 |
| A67 | Benoni Defense: Taimanov Variation | eight squares: f1, g1, f3, b5, e8, f8, g8, h8 |
| A71 | Benoni Defense: Classical Variation, Averbakh-Grivas Attack | eight squares: c1, f2, f4, g5, e8, f8, g8, h8 |
Where lines continue from here
Four named lines filed under other codes pass through the position after 8...O-O. All of them belong to the codes listed above.