B77 Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line
B77 holds seven named lines, all under the name Sicilian Defense. It leaves B76 (Sicilian Defense: Dragon Variation, Yugoslav Attack) with 9.Bc4. Its deepest line, Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak Variation, runs to 11...Qa5, the fifth-longest of the 80 Sicilian Defense codes. That final move, by the bishop, opens a line for the rook on h1 and pins the pawn on f7 to its king.
| # | White | Black |
|---|---|---|
| 1 | e4 | c5 |
| 2 | Nf3 | d6 |
| 3 | d4 | cxd4 |
| 4 | Nxd4 | Nf6 |
| 5 | Nc3 | g6 |
| 6 | Be3 | Bg7 |
| 7 | f3 | O-O |
| 8 | Qd2 | Nc6 |
| 9 | Bc4 |
Lines filed under B77
All seven share the start 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 and then split two ways at Black’s move 7.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line | 7...O-O 8.Qd2 Nc6 9.Bc4 | 17 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Byrne Variation | 7...O-O 8.Qd2 Nc6 9.Bc4 a5 | 18 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line | 7...O-O 8.Qd2 Nc6 9.Bc4 Bd7 | 18 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Sosonko Variation | 7...Nc6 8.Qd2 O-O 9.Bc4 Nd7 | 18 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line | 7...O-O 8.Qd2 Nc6 9.Bc4 Bd7 10.Bb3 | 19 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak Variation | 7...Nc6 8.Qd2 O-O 9.Bc4 Nxd4 10.Bxd4 Be6 | 20 | Black castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Czerniak Variation | 7...Nc6 8.Qd2 O-O 9.Bc4 Nxd4 10.Bxd4 Be6 11.Bb3 Qa5 | 22 | Black castled |
The road to B77
- 1.e4 … 7.f3ten earlier stops: B00, B20, B27, B50, B54, B70, B72, B75
- 7...O-OB76 Yugoslav Attack
- 8...Nc6B76 Yugoslav Attack
- 9.Bc4B77
The position after 9.Bc4
White has brought out the knight on c3, knight on d4, bishop on c4 and bishop on e3; Black the knight on c6, knight on f6 and bishop on g7. White has a half-open d-file; Black a half-open c-file. Black could capture with Nxd4, Nxe4. Black is to move and has 36 legal moves.
Codes that branch off from B77
The reference lines of two other codes leave B77 from the position after 9...Bd7, each with its own moves.
| Code | Moves | Reference line |
|---|---|---|
| B78 | 10.O-O-O | Sicilian Defense: Dragon Variation, Yugoslav Attack |
| B79 | 10.h4 Qa5 11.O-O-O Rfc8 12.Bb3 | Sicilian Defense: Dragon Variation, Yugoslav Attack |
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| E79 | King’s Indian Defense: Four Pawns Attack, Exchange Variation | seven squares: d1, c2, d2, e2, f3, c4, f4 |
| E83 | King’s Indian Defense: Sämisch Variation, Yates Defense | eight squares: d1, f1, g1, c2, d2, c4, d4, c7 |
| B35 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | ten squares: d1, d2, f2, f3, d6, d7, e8, f8 … |
| B75 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | ten squares: d1, f1, d2, c4, c6, b8, e8, f8 … |
| E84 | King’s Indian Defense: Sämisch Variation, Panno Main Line | ten squares: f1, c2, e2, c4, d4, a6, a7, c7 … |
| E86 | King’s Indian Defense: Sämisch Variation | 11 squares: d1, f1, c2, d2, e2, c4, d4, e5 … |
| B57 | Sicilian Defense: Classical Variation, Sozin Attack | 12 squares: c1, d1, d2, f2, e3, f3, g6, g7 … |
Where lines continue from here
Six named lines filed under other codes pass through the position after 9.Bc4. All of them belong to the codes listed above.