B79 Sicilian Defense: Dragon Variation, Yugoslav Attack
B79 holds two named lines, all under the name Sicilian Defense. It leaves B77 (Sicilian Defense: Dragon Variation, Yugoslav Attack, Main Line) with 10.h4 Qa5 11.O-O-O Rfc8 12.Bb3. Black, to move in that position, has 51 legal moves, the most of all 500 codes. At 23 plies, its reference line is the longest of the 80 Sicilian Defense codes. Black’s pieces and pawns attack nine squares in White’s half, the most of the 80 Sicilian Defense codes.
| # | 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 | Bd7 |
| 10 | h4 | Qa5 |
| 11 | O-O-O | Rfc8 |
| 12 | Bb3 |
Moves only B79 plays
Same as B78 up to 9...Bd7, then:
- 10.h4 The h-pawn advances two squares to h4, covering g5, opening a line for the rook on h1.
- 10...Qa5 The queen goes from d8 to a5, opening a line for the rook on a8 and the rook on f8, attacking the knight on c3.
- 11.O-O-O White castles queenside, opening a line for the rook on h1, guarding the pawn on b2.
- 11...Rfc8 The rook goes from f8 to c8.
- 12.Bb3 The bishop goes from c4 to b3, pinning the pawn on f7 to its king.
Lines filed under B79
Both share the start 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 Bd7 and then split two ways at White’s move 10.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Sicilian Defense: Dragon Variation, Yugoslav Attack | 10.h4 Qa5 11.O-O-O Rfc8 12.Bb3 | 23 | both castled |
| Sicilian Defense: Dragon Variation, Yugoslav Attack, Soltis Variation | 10.O-O-O Qa5 11.h4 Rfc8 12.Bb3 h5 | 24 | both castled |
Sicilian Defense: Dragon Variation, Yugoslav Attack, Soltis Variation
- 10.O-O-O White castles queenside, opening a line for the rook on h1, guarding the pawn on b2.
- 10...Qa5 The queen goes from d8 to a5, opening a line for the rook on a8 and the rook on f8, attacking the knight on c3.
- 11.h4 The h-pawn advances two squares to h4, covering g5, opening a line for the rook on h1.
- 11...Rfc8 The rook goes from f8 to c8.
- 12.Bb3 The bishop goes from c4 to b3, pinning the pawn on f7 to its king.
The road to B79
The position after 12.Bb3
White has brought out the knight on c3, knight on d4, bishop on b3 and bishop on e3; Black the knight on c6, knight on f6, bishop on d7 and bishop on g7. White has a half-open d-file; Black a half-open c-file. Black could capture with Nxd4, Nxe4, Qxa2, Qxc3.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B76 | Sicilian Defense: Dragon Variation, Yugoslav Attack | 16 squares: a1, c1, d1, e1, f1, d2, h2, b3 … |
| B64 | Sicilian Defense: Richter-Rauzer Variation, Classical Variation | 17 squares: f1, h2, b3, e3, f3, f4, h4, a5 … |
| B75 | Sicilian Defense: Dragon Variation, Yugoslav Attack, Early Deviations | 18 squares: a1, c1, d1, e1, f1, d2, h2, b3 … |
| E79 | King’s Indian Defense: Four Pawns Attack, Exchange Variation | 18 squares: a1, c1, d1, e1, c2, d2, e2, h2 … |
| B35 | Sicilian Defense: Accelerated Dragon, Modern Bc4 Variation | 19 squares: a1, c1, d1, e1, d2, f2, h2, b3 … |
| B65 | Sicilian Defense: Richter-Rauzer Variation, Rauzer Attack | 19 squares: f1, h2, b3, e3, f3, d4, f4, h4 … |
| B74 | Sicilian Defense: Dragon Variation, Classical Variation, Normal Line | 19 squares: a1, c1, d1, f1, g1, h1, d2, e2 … |