B29 Sicilian Defense: Nimzowitsch Variation
B29 holds five named lines, all under the name Sicilian Defense. It leaves B27 (Sicilian Defense) with 2...Nf6. That final move, by the knight, opens a line for the rook on h8. Of all other reference positions, the board of A05 (Zukertort Opening) comes closest, four squares apart.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | Nf6 |
Lines filed under B29
All five share their first four plies, the whole reference line and then split two ways at White’s move 3.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Sicilian Defense: Nimzowitsch Variation | (the shared start itself) | 4 | |
| Sicilian Defense: Nimzowitsch Variation, Advance Variation | 3.e5 | 5 | |
| Sicilian Defense: Nimzowitsch Variation, Closed Variation | 3.Nc3 | 5 | |
| Sicilian Defense: Nimzowitsch Variation, Exchange Variation | 3.e5 Nd5 4.Nc3 Nxc3 | 8 | Black +3 |
| Sicilian Defense: Nimzowitsch Variation, Main Line | 3.e5 Nd5 4.Nc3 e6 5.Nxd5 exd5 6.d4 Nc6 | 12 |
The road to B29
- 1.e4one earlier stop: B00
- 1...c5B20 Sicilian Defense
- 2.Nf3B27 Sicilian Defense
- 2...Nf6B29
The position after 2...Nf6
White has brought out the knight on f3; Black the knight on f6. White is to move and has 28 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B02 | Alekhine Defense | four squares: g1, f3, c5, c7 |
| B20 | Sicilian Defense | four squares: g1, f3, f6, g8 |
| B28 | Sicilian Defense: O’Kelly Variation | four squares: a6, f6, a7, g8 |
| B30 | Sicilian Defense: Old Sicilian | four squares: c6, f6, b8, g8 |
| B40 | Sicilian Defense: French Variation | four squares: e6, f6, e7, g8 |
| B50 | Sicilian Defense: Modern Variations | four squares: d6, f6, d7, g8 |
| C42 | Petrov’s Defense | four squares: c5, e5, c7, e7 |
Where lines continue from here
One named line filed under other codes passes through the position after 2...Nf6. It belongs to B92.