B19 Caro-Kann Defense: Classical Variation
B19 holds four named lines, all under the name Caro-Kann Defense. It leaves B18 (Caro-Kann Defense: Classical Variation, Main Line) with 6...h6 7.Nf3 Nd7. Black has two minor pieces off their first squares, the most of the 10 Caro-Kann Defense codes. At 14 plies, its reference line is the longest of the 10 Caro-Kann Defense codes. Its deepest line, Caro-Kann Defense: Classical Variation, Lobron System, runs to 12...Be7, the longest of the 10 Caro-Kann Defense codes.
| # | White | Black |
|---|---|---|
| 1 | e4 | c6 |
| 2 | d4 | d5 |
| 3 | Nd2 | dxe4 |
| 4 | Nxe4 | Bf5 |
| 5 | Ng3 | Bg6 |
| 6 | h4 | h6 |
| 7 | Nf3 | Nd7 |
Moves only B19 plays
Same as B18 up to 4...Bf5, then:
- 5.Ng3 The knight goes from e4 to g3, guarding the rook on h1, attacking the bishop on f5.
- 5...Bg6 The bishop goes from f5 to g6.
- 6.h4 The h-pawn advances two squares to h4, covering g5, opening a line for the rook on h1.
- 6...h6 The h-pawn advances to h6, covering g5, opening a line for the rook on h8.
- 7.Nf3 The knight leaves g1 for f3, opening a line for the rook on h1.
- 7...Nd7 The knight leaves b8 for d7, opening a line for the rook on a8.
Lines filed under B19
All four share their first 14 plies, the whole reference line.
| Name | After the shared start | Plies | At the end |
|---|---|---|---|
| Caro-Kann Defense: Classical Variation | (the shared start itself) | 14 | |
| Caro-Kann Defense: Classical Variation, Spassky Variation | 8.h5 | 15 | |
| Caro-Kann Defense: Classical Variation, Lobron System | 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Ngf6 12.O-O-O Be7 | 24 | White castled |
| Caro-Kann Defense: Classical Variation, Seirawan Variation | 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 Ngf6 11.Bd2 e6 12.O-O-O Bd6 | 24 | White castled |
Caro-Kann Defense: Classical Variation, Spassky Variation
- 8.h5 The h-pawn advances to h5, covering g6, opening a line for the rook on h1, attacking the bishop on g6.
Caro-Kann Defense: Classical Variation, Lobron System
- 8.h5 The h-pawn advances to h5, covering g6, opening a line for the rook on h1, attacking the bishop on g6.
- 8...Bh7 The bishop goes from g6 to h7.
- 9.Bd3 The bishop leaves f1 for d3, opening a line for the rook on h1, attacking the bishop on h7.
- 9...Bxd3 The bishop on h7 takes the bishop on d3, opening a line for the rook on h8.
- 10.Qxd3 The queen on d1 takes the bishop on d3.
Caro-Kann Defense: Classical Variation, Seirawan Variation
- 8.h5 The h-pawn advances to h5, covering g6, opening a line for the rook on h1, attacking the bishop on g6.
- 8...Bh7 The bishop goes from g6 to h7.
- 9.Bd3 The bishop leaves f1 for d3, opening a line for the rook on h1, attacking the bishop on h7.
- 9...Bxd3 The bishop on h7 takes the bishop on d3, opening a line for the rook on h8.
- 10.Qxd3 The queen on d1 takes the bishop on d3.
The road to B19
- 1.e4 … 4.Nxe4six earlier stops: B00, B10, B12, B15
- 4...Bf5B18 Classical Variation
- 6.h4B18 Main Line
- 7...Nd7B19
The position after 7...Nd7
White has brought out the knight on f3 and knight on g3; Black the knight on d7 and bishop on g6. White has a half-open e-file; Black a half-open d-file. White could capture with Bxh6. White is to move and has 36 legal moves.
Closest boards in other codes
| Code | Line | Differs on |
|---|---|---|
| B16 | Caro-Kann Defense: Finnish Variation | ten squares: g1, h2, f3, g3, e4, h4, g6, d7 … |
| B17 | Caro-Kann Defense: Karpov Variation | ten squares: g1, h2, f3, g3, e4, h4, g6, h6 … |
| B32 | Sicilian Defense: Open | 12 squares: b1, h2, g3, e4, h4, c5, c6, g6 … |
| B12 | Caro-Kann Defense | 13 squares: b1, g1, h2, f3, g3, e4, h4, g6 … |
| B13 | Caro-Kann Defense: Exchange Variation | 13 squares: b1, g1, h2, f3, g3, h4, d5, g6 … |
| C09 | French Defense: Tarrasch Variation, Open System, Main Line | 13 squares: d2, h2, g3, h4, c5, d5, c6, g6 … |
| B11 | Caro-Kann Defense: Two Knights Attack, Mindeno Variation | 14 squares: d2, h2, c3, g3, d4, e4, g4, h4 … |