Chess Openings Lab
a8b7c6d5e4f3g2h1

Caro-Kann Defense: Bronstein-Larsen Variation

The Bronstein-Larsen Variation is 4...Nf6 5.Nxf6+ gxf6, where Black recaptures toward the edge with the g-pawn. Black accepts broken kingside pawns to get a half-open g-file and active pieces, while White aims for safe development and pressure against the damaged structure.

Moves
1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6
ECO
B16
Engine
+0.84 · a clear edge for White (Stockfish 17.1, depth 20)
Played
384 games in our lichess sample
White scores
53.4%

Key ideas for both sides

White

  • Develop with Nf3, Be2 and short castling, as in the main engine line, and then bring a rook to e1.
  • Play c3 and keep d4 firm. Black's f6 pawn stops e5 for now, so White must win the game with pieces.
  • Consider Bc4 and a4, the second engine line, to gain queenside space and target b6 if a knight goes there.

Black

  • Put the bishop on f5 or g4 early, then play ...e6 to finish developing behind a solid pawn shield.
  • Use ...Rg8 to press down the half-open g-file against g2 and a castled White king.
  • Consider ...Qc7 and ...O-O-O, keeping the king away from the broken kingside pawns.
  • The knight usually goes ...Nd7 to b6 or f8, covering key squares around the center.

Plans and pawn structure

Black's structure has pawns on f7, f6 and h7 with no g-pawn, so long castling is common and the g-file becomes a road for the rook. White has a clean extra center pawn on d4 and wants simple development: Nf3, Be2, O-O, c3 and Re1. Later White can push c4 and d5 to open lines, or play h4 to fix Black's kingside. Black seeks activity with ...Bf5, ...Qc7 and ...O-O-O, then ...Rg8 or an ...e5 break to free the position.

Where the engine's main line heads: White pawn d4, no e-pawns for White, no d-pawn for Black. White has a pawn on d4 and no e-pawn; Black has no d-pawn. White has more central space; Black's pieces are free and the d4 pawn is a target.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.84: a clear edge for White. Its three top choices for White:

  1. +0.84 6.Nf3 Bg4 7.Be2 e6 8.O-O Rg8
  2. +0.83 6.Bc4 Bf5 7.Nf3 Nd7 8.O-O e6
  3. +0.80 6.Be3 Bf5 7.Nf3 Nd7 8.Be2 e6

Pawns, from White's side.

How it scores on lichess

384 rated lichess games reached this position; White scored 53.4%.

1200–159973.4%
1600–199951.6%
2000 and up51.9%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

How to play against it

As White, keep it simple: develop, castle short and play c3. Do not grab pawns on the kingside, because opening the g-file helps Black's rooks. Your edge is the healthier structure, so aim for trades and an endgame where the doubled f-pawns become a long-term weakness.

Questions

What are the moves of the Caro-Kann Defense: Bronstein-Larsen Variation?

The Caro-Kann Defense: Bronstein-Larsen Variation starts 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6. Its ECO code is B16.

Is the Caro-Kann Defense: Bronstein-Larsen Variation good for Black?

Stockfish 17.1 rates the position +0.84 at depth 20, which is a clear edge for White. In 384 lichess games from our sample, White scored 53.4%. A fighting choice for Black players who like unbalanced positions and long castling, but it demands energetic piece play to make up for the weak pawns.

What is the main idea of the Caro-Kann Defense: Bronstein-Larsen Variation?

Black takes back on f6 with the g-pawn to open the g-file and keep central control with the f6 pawn. In return Black accepts a damaged kingside, so the king often goes long and the rooks use the g-file.

What should White play next?

The engine's first choice is Nf3, with Bc4 and Be3 close behind. 6.Nf3 develops and covers h4 and e5, while keeping open the choice between Be2 and a different bishop setup.

Updated October 2026. Sources and method.