A70 Benoni Defense: Classical Variation
A70 holds three named lines, all under the name Benoni Defense. It leaves A61 (Benoni Defense) with 7.e4. Lines of nine other codes continue from its position, the fourth-widest spread of the 23 Benoni Defense codes. Lines filed under A72 reach one of its named positions by a different move order.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | e6 |
| 3 | Nf3 | c5 |
| 4 | d5 | exd5 |
| 5 | cxd5 | d6 |
| 6 | Nc3 | g6 |
| 7 | e4 |
The move that completes A70
The reference line of A71 plays all of these moves and continues beyond them; A70 is the position reached at 7.e4.
- 7.e4 The e-pawn advances two squares to e4, covering d5 and f5, opening a line for the queen on d1 and the bishop on f1.
Lines filed under A70
All three share their first 13 plies, the whole reference line.
| Name | After the shared start | Plies |
|---|---|---|
| Benoni Defense: Classical Variation | (the shared start itself) | 13 |
| Benoni Defense: Classical Variation, New York Variation | 7...Bg7 8.h3 | 15 |
| Benoni Defense: Classical Variation, Traditional Variation | 7...Bg7 8.Be2 | 15 |
Benoni Defense: Classical Variation, New York Variation
- 7...Bg7 The bishop leaves f8 for g7, opening a line for the rook on h8, guarding the rook on h8.
- 8.h3 The h-pawn advances to h3, covering g4, opening a line for the rook on h1.
Benoni Defense: Classical Variation, Traditional Variation
- 7...Bg7 The bishop leaves f8 for g7, opening a line for the rook on h8, guarding the rook on h8.
- 8.Be2 The bishop leaves f1 for e2, opening a line for the rook on h1.
The road to A70
- 1.d4 … 2...e6three earlier stops: A40, A45, A50
- 3.Nf3E10 Anti-Nimzo-Indian
- 6...g6A61 Benoni Defense
- 7.e4A70
The position after 7.e4
White has brought out the knight on c3 and knight on f3; Black the knight on f6. White has a half-open c-file; Black a half-open e-file. Black could capture with Nxd5, Nxe4. Black is to move and has 33 legal moves.
Codes that branch off from A70
The reference lines of two other codes leave A70 from two of its named positions; “From” gives the last part of that position’s name.
| Code | From | Moves | Reference line |
|---|---|---|---|
| A71 | Classical Variation | 7...Bg7 8.Bg5 | Benoni Defense: Classical Variation, Averbakh-Grivas Attack |
| A72 | Traditional Variation | 8...O-O | Benoni Defense: Classical Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A65 | Benoni Defense: King’s Pawn Line | four squares: g1, f3, g6, g7 |
| A66 | Benoni Defense: Pawn Storm Variation | four squares: g1, f2, f3, f4 |
| B08 | Pirc Defense: Classical Variation | six squares: c2, d4, c5, d5, c7, e7 |
| B70 | Sicilian Defense: Dragon Variation | six squares: c2, f3, d4, c5, d5, e7 |
| A68 | Benoni Defense: Four Pawns Attack | seven squares: f2, f4, g7, e8, f8, g8, h8 |
| D41 | Queen’s Gambit Declined: Semi-Tarrasch Defense | seven squares: e2, d4, e4, d6, e6, g6, g7 |
| A67 | Benoni Defense: Taimanov Variation | eight squares: f1, g1, f2, f3, f4, b5, g7, f8 |
Where lines continue from here
Besides the codes above, they belong to A73, A74, A75, A76, A77, A78, A79.
Other move orders
- Benoni Defense: Classical Variation is also reached inside A72 Benoni Defense: Classical Variation, whose order is 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3.
- Benoni Defense: Classical Variation, Traditional Variation is also reached inside A72 Benoni Defense: Classical Variation, whose order is 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2.