B94 Sicilian Defense: Najdorf Variation
B94 holds two named lines, all under the name Sicilian Defense. It leaves B90, a position of the same name, with 6.Bg5. Queenside castling appears once among its lines, in Sicilian Defense: Najdorf Variation, Ivkov Variation. Its deepest line, Sicilian Defense: Najdorf Variation, Ivkov Variation, runs to 12.e5, the third-longest of the 80 Sicilian Defense codes.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | d6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | Nf6 |
| 5 | Nc3 | a6 |
| 6 | Bg5 |
The move that completes B94
The reference line of B95 plays all of these moves and continues beyond them; B94 is the position reached at 6.Bg5.
- 6.Bg5 The bishop leaves c1 for g5, opening a line for the rook on a1 and the queen on d1, attacking the knight on f6.
Lines filed under B94
Both share their first 11 plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Sicilian Defense: Najdorf Variation | (the shared start itself) | 11 | |
| Sicilian Defense: Najdorf Variation, Ivkov Variation | 6...Nbd7 7.Bc4 Qa5 8.Qd2 e6 9.O-O-O b5 10.Bb3 Bb7 11.Rhe1 Nc5 12.e5 | 23 | White castled |
Sicilian Defense: Najdorf Variation, Ivkov Variation
- 6...Nbd7 The knight leaves b8 for d7, opening a line for the rook on a8.
- 7.Bc4 The bishop leaves f1 for c4, opening a line for the rook on h1.
- 7...Qa5 The queen goes from d8 to a5, attacking the knight on c3 and the bishop on g5, pinning the knight on c3 to its king.
- 8.Qd2 The queen goes from d1 to d2, opening a line for the rook on a1, guarding the bishop on g5.
- 8...e6 The e-pawn advances to e6, covering d5 and f5, opening a line for the bishop on f8.
The road to B94
- 1.e4 … 4.Nxd4six earlier stops: B00, B20, B27, B50
- 4...Nf6B54 Main Line
- 5...a6B90 Najdorf Variation
- 6.Bg5B94
The position after 6.Bg5
White has brought out the knight on c3, knight on d4 and bishop on g5; 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 29 legal moves.
Codes that branch off from B94
The reference lines of one other code leave B94 from the position after 6.Bg5, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| B95 | 6...e6 | Sicilian Defense: Najdorf Variation |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B60 | Sicilian Defense: Richter-Rauzer Variation | four squares: a6, c6, a7, b8 |
| B91 | Sicilian Defense: Najdorf Variation, Zagreb Variation | four squares: c1, g2, g3, g5 |
| B92 | Sicilian Defense: Najdorf Variation, Opocensky Variation | four squares: c1, f1, e2, g5 |
| B93 | Sicilian Defense: Najdorf Variation, Amsterdam Variation | four squares: c1, f2, f4, g5 |
| B96 | Sicilian Defense: Najdorf Variation | four squares: f2, f4, e6, e7 |
| B98 | Sicilian Defense: Najdorf Variation | five squares: f2, f4, e6, e7, f8 |
| B56 | Sicilian Defense: Classical Variation | six squares: c1, g5, a6, c6, a7, b8 |
Where lines continue from here
Twelve named lines filed under other codes pass through the position after 6.Bg5. Besides the codes above, they belong to B96, B97, B98, B99.