B43 Sicilian Defense: Kan Variation, Knight Variation
B43 holds five named lines, all under the name Sicilian Defense. It leaves B41 (Sicilian Defense: Kan Variation) with 5.Nc3. That final move, by the knight, opens a line for the rook on a1 and guards the pawn on e4. Of all other reference positions, the board of B46 (Taimanov Variation) comes closest, two squares apart.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | e6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | a6 |
| 5 | Nc3 |
Lines filed under B43
All five share their first nine plies, the whole reference line.
| Name | After the shared start | Plies |
|---|---|---|
| Sicilian Defense: Kan Variation, Knight Variation | (the shared start itself) | 9 |
| Sicilian Defense: Kan Variation, Wing Attack | 5...b5 | 10 |
| Sicilian Defense: Kan Variation, Knight Variation | 5...b5 6.g3 Bb7 7.Bg2 | 13 |
| Sicilian Defense: Kan Variation, Wing Attack, Spraggett Attack | 5...b5 6.Bd3 Qb6 7.Nf3 | 13 |
| Sicilian Defense: Kan Variation, Wing Attack, Christiansen’s Dream | 5...b5 6.Bd3 Qb6 7.Be3 Bc5 8.Qg4 | 15 |
The road to B43
The position after 5.Nc3
White has brought out the knight on c3 and knight on d4; Black has not yet moved a knight or bishop. White has a half-open d-file; Black a half-open c-file. Black is to move and has 30 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B42 | Sicilian Defense: Kan Variation, Modern Variation | four squares: b1, f1, c3, d3 |
| B45 | Sicilian Defense: Taimanov Variation | four squares: a6, c6, a7, b8 |
| B44 | Sicilian Defense: Taimanov Variation | six squares: b1, c3, a6, c6, a7, b8 |
| B47 | Sicilian Defense: Taimanov Variation, Bastrikov Variation | six squares: a6, c6, a7, c7, b8, d8 |
| B80 | Sicilian Defense: Scheveningen Variation | six squares: a6, d6, f6, a7, d7, g8 |
| B84 | Sicilian Defense: Scheveningen Variation, Classical Variation | six squares: f1, e2, d6, f6, d7, g8 |
| B90 | Sicilian Defense: Najdorf Variation | six squares: d6, e6, f6, d7, e7, g8 |