B91 Sicilian Defense: Najdorf Variation, Zagreb Variation
B91 holds a single named line. It leaves B90 (Sicilian Defense: Najdorf Variation) with 6.g3. That final move, by the g-pawn, covers f4 and h4 and opens a line for the bishop on f1. Of all other reference positions, the board of B92 (Najdorf Variation, Opocensky Variation) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | d6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | Nf6 |
| 5 | Nc3 | a6 |
| 6 | g3 |
The road to B91
- 1.e4 … 4.Nxd4six earlier stops: B00, B20, B27, B50
- 4...Nf6B54 Main Line
- 5...a6B90 Najdorf Variation
- 6.g3B91
The position after 6.g3
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 30 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B93 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | four squares: f2, g2, g3, f4 |
| B94 | Sicilian Defense: Najdorf Variation | four squares: c1, g2, g3, g5 |
| B56 | Sicilian Defense: Classical Variation | six squares: g2, g3, a6, c6, a7, b8 |
| B70 | Sicilian Defense: Dragon Variation | six squares: g2, g3, a6, g6, a7, g7 |
| B80 | Sicilian Defense: Scheveningen Variation | six squares: g2, g3, a6, e6, a7, e7 |
| B81 | Sicilian Defense: Scheveningen Variation, Keres Attack | six squares: g3, g4, a6, e6, a7, e7 |
| B95 | Sicilian Defense: Najdorf Variation | six squares: c1, g2, g3, g5, e6, e7 |