B70 Sicilian Defense: Dragon Variation
B70 holds three named lines, all under the name Sicilian Defense. It leaves B54 (Sicilian Defense: Modern Variations, Main Line) with 5.Nc3 g6. Lines filed under B74 reach one of its named positions by a different move order. That final move, by the g-pawn, covers f5 and h5 and opens a line for the bishop on f8.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | d6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | Nf6 |
| 5 | Nc3 | g6 |
Lines filed under B70
All three share their first ten plies, the whole reference line and then split two ways at White’s move 6.
| Name | After the shared start | Plies |
|---|---|---|
| Sicilian Defense: Dragon Variation | (the shared start itself) | 10 |
| Sicilian Defense: Dragon Variation, Classical Variation | 6.Be2 | 11 |
| Sicilian Defense: Dragon Variation, Fianchetto Variation | 6.g3 | 11 |
Sicilian Defense: Dragon Variation, Classical Variation
- 6.Be2 The bishop leaves f1 for e2, opening a line for the rook on h1.
Sicilian Defense: Dragon Variation, Fianchetto Variation
- 6.g3 The g-pawn advances to g3, covering f4 and h4, opening a line for the bishop on f1.
The road to B70
- 1.e4 … 3.d4five earlier stops: B00, B20, B27, B50
- 3...cxd4B50 Sicilian Defense
- 4...Nf6B54 Main Line
- 5...g6B70
The position after 5...g6
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. White is to move and has 43 legal moves.
Codes that branch off from B70
The reference lines of four other codes leave B70 from two of its named positions; “From” gives the last part of that position’s name.
| Code | From | Moves | Reference line |
|---|---|---|---|
| B71 | Dragon Variation | 6.f4 | Sicilian Defense: Dragon Variation, Levenfish Variation |
| B72 | Dragon Variation | 6.Be3 | Sicilian Defense: Dragon Variation |
| B73 | Classical Variation | 6...Bg7 7.O-O Nc6 8.Be3 | Sicilian Defense: Dragon Variation, Classical Variation |
| B74 | Classical Variation | 6...Bg7 7.O-O O-O 8.Be3 Nc6 9.Nb3 | Sicilian Defense: Dragon Variation, Classical Variation, Normal Line |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B08 | Pirc Defense: Classical Variation | three squares: f3, d4, c7 |
| B56 | Sicilian Defense: Classical Variation | four squares: c6, g6, g7, b8 |
| B80 | Sicilian Defense: Scheveningen Variation | four squares: e6, g6, e7, g7 |
| B90 | Sicilian Defense: Najdorf Variation | four squares: a6, g6, a7, g7 |
| B09 | Pirc Defense: Austrian Attack | five squares: g1, f2, d4, f4, c7 |
| A70 | Benoni Defense: Classical Variation | six squares: c2, f3, d4, c5, d5, e7 |
| B57 | Sicilian Defense: Classical Variation, Sozin Attack | six squares: f1, c4, c6, g6, g7, b8 |
Where lines continue from here
Thirty-two named lines filed under other codes pass through the position after 5...g6. Besides the codes above, they belong to B75, B76, B77, B78, B79.
Other move orders
- Sicilian Defense: Dragon Variation is also reached inside B74 Sicilian Defense: Dragon Variation, Classical Variation, Bernard Defense, whose order is 1.e4 c5 2.Nf3 g6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6.
- Sicilian Defense: Dragon Variation, Classical Variation is also reached inside B74 Sicilian Defense: Dragon Variation, Classical Variation, Bernard Defense, whose order is 1.e4 c5 2.Nf3 g6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2.