A79 Benoni Defense: Classical Variation, Czerniak Defense
A79 holds a single named line. It leaves A78, a position of the same name, with 11.f3. At 21 plies, its reference line is the second-longest of the 23 Benoni Defense codes. Both kings have castled by the end of the reference line, White on move 9 and Black on move 8.
| # | White | Black |
|---|---|---|
| 1 | d4 | Nf6 |
| 2 | c4 | c5 |
| 3 | d5 | e6 |
| 4 | Nc3 | exd5 |
| 5 | cxd5 | d6 |
| 6 | e4 | g6 |
| 7 | Nf3 | Bg7 |
| 8 | Be2 | O-O |
| 9 | O-O | Re8 |
| 10 | Nd2 | Na6 |
| 11 | f3 |
Moves only A79 plays
Same as A77 up to 10.Nd2, then:
- 10...Na6 The knight leaves b8 for a6, opening a line for the rook on a8.
- 11.f3 The f-pawn advances to f3, covering e4 and g4, opening a line for the rook on f1.
The road to A79
Three of the 13 named positions on the way are reached by a move order other than their own.
The position after 11.f3
White has brought out the knight on c3, knight on d2 and bishop on e2; Black the knight on a6, knight on f6 and bishop on g7. White has a half-open c-file; Black a half-open e-file. Black could capture with Nxd5, Nxe4, Rxe4. Black is to move and has 35 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| A76 | Benoni Defense: Classical Variation, Czerniak Defense | five squares: d2, f2, f3, a6, b8 |
| A73 | Benoni Defense: Classical Variation, Main Line | seven squares: d2, f2, f3, a6, b8, e8, f8 |
| A69 | Benoni Defense: Four Pawns Attack, Main Line | nine squares: e1, f1, g1, h1, d2, f3, f4, a6 … |
| A74 | Benoni Defense: Classical Variation, Full Line | ten squares: a2, d2, f2, f3, a4, a6, a7, b8 … |
| A63 | Benoni Defense: Fianchetto Variation, Hastings Defense | 11 squares: d2, e2, f2, g2, f3, g3, e4, a6 … |
| A64 | Benoni Defense: Fianchetto Variation, Hastings Defense, Main Line | 11 squares: a2, e2, f2, g2, f3, g3, a4, e4 … |
| A72 | Benoni Defense: Classical Variation | 11 squares: e1, f1, g1, h1, d2, f2, f3, a6 … |