B71 Sicilian Defense: Dragon Variation, Levenfish Variation
B71 holds two named lines, all under the name Sicilian Defense. It leaves B70 (Sicilian Defense: Dragon Variation) with 6.f4. That final move, by the f-pawn, covers e5 and g5. Of all other reference positions, the board of B09 (Pirc Defense: Austrian Attack) comes closest, three squares apart.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | d6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | Nf6 |
| 5 | Nc3 | g6 |
| 6 | f4 |
Lines filed under B71
Both share their first 11 plies, the whole reference line.
| Name | After the shared start | Plies |
|---|---|---|
| Sicilian Defense: Dragon Variation, Levenfish Variation | (the shared start itself) | 11 |
| Sicilian Defense: Dragon Variation, Levenfish Variation, Main Line | 6...Nbd7 | 12 |
Sicilian Defense: Dragon Variation, Levenfish Variation, Main Line
- 6...Nbd7 The knight leaves b8 for d7, opening a line for the rook on a8.
The road to B71
- 1.e4 … 4.Nxd4six earlier stops: B00, B20, B27, B50
- 4...Nf6B54 Main Line
- 5...g6B70 Dragon Variation
- 6.f4B71
The position after 6.f4
White has brought out the knight on c3 and knight on d4; Black the knight on f6. White has a half-open d-file; Black a half-open c-file. Black could capture with Nxe4. Black is to move and has 32 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B72 | Sicilian Defense: Dragon Variation | four squares: c1, f2, e3, f4 |
| B82 | Sicilian Defense: Scheveningen Variation, Matanovic Attack | four squares: e6, g6, e7, g7 |
| B93 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | four squares: a6, g6, a7, g7 |
| B08 | Pirc Defense: Classical Variation | five squares: f2, f3, d4, f4, c7 |
| A66 | Benoni Defense: Pawn Storm Variation | six squares: g1, c2, d4, c5, d5, e7 |
| B54 | Sicilian Defense: Dragon Variation, Accelerated Dragon | six squares: b1, f2, c3, f4, f6, g8 |
| B56 | Sicilian Defense: Classical Variation | six squares: f2, f4, c6, g6, g7, b8 |