Chess Openings Lab
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Nimzowitsch Defense: Franco-Nimzowitsch Variation

The Franco-Nimzowitsch Variation is 1.e4 Nc6 2.Nf3 e6, where Black prepares ...d5 for a French-style center. White takes space with d4 and e5, while Black attacks the pawn chain with ...f6 and develops with ...Nge7.

Moves
1.e4 Nc6 2.Nf3 e6
ECO
B00
Engine
+0.73 · a slight edge for White (Stockfish 17.1, depth 20)
Played
2,645 games in our lichess sample
White scores
54.0%

Key ideas for both sides

White

  • Play 3.d4 and answer ...d5 with e5, building a French chain on d4 and e5 with a space edge.
  • Use Bb5, as in the top engine line, to pin the c6 knight and add pressure behind the e5 pawn.
  • Add c3 to reinforce d4, so the base of the chain cannot be hit by the c6 knight.
  • After ...f6, keep e5 protected by the f3 knight and recapture with a piece if Black takes on e5.

Black

  • Play ...d5, and after e5 strike at the head of the chain with ...f6 to open the f-file.
  • Develop with ...Nge7 and ...Bd7, as in the engine line, to prepare ...f6 and a knight jump to f5.
  • The knight on c6 blocks the c-pawn, so the usual ...c5 break needs the knight to move first.
  • Meet a Bb5 pin with ...Bd7, which unpins and keeps the pawn structure solid on the queenside.

Plans and pawn structure

This is a French structure with Black's knight on c6 instead of a pawn on c5. White's chain on d4 and e5 gives space and kingside chances, while Black's main break is ...f6. Because the knight sits on c6, the usual ...c5 break is harder, so Black often relies on ...f6 and piece pressure against d4 with ...Nf5. White wants to keep e5 with c3, Bb5 and the f3 knight and use the extra space for a kingside attack.

Where the engine's main line heads: French chain: d4–e5 against d5–e6. The French chain: White's pawns on d4 and e5 face Black's on d5 and e6. White has kingside space, Black attacks the base of the chain.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.73: a slight edge for White. Its three top choices for White:

  1. +0.73 3.d4 d5 4.e5 f6 5.Bb5 Ne7
  2. +0.59 3.Nc3 d5 4.d4 Nf6 5.e5 Ne4
  3. +0.30 3.g3 d5 4.e5 d4 5.d3 Qd5

Pawns, from White's side.

How it scores on lichess

2,645 rated lichess games reached this position; White scored 54.0%.

under 120055.9%
1200–159954.5%
1600–199950.5%
2000 and up57.5%

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

How to play against it

White, play 3.d4 and then e5 after ...d5. Use Bb5 and c3 to hold the chain together and keep the d4 base safe. Black, prepare ...f6 with ...Nge7 and ...Bd7 first, and do not leave the c6 knight without a role.

Questions

What are the moves of the Nimzowitsch Defense: Franco-Nimzowitsch Variation?

The Nimzowitsch Defense: Franco-Nimzowitsch Variation starts 1.e4 Nc6 2.Nf3 e6. Its ECO code is B00.

Is the Nimzowitsch Defense: Franco-Nimzowitsch Variation good for Black?

Stockfish 17.1 rates the position +0.73 at depth 20, which is a slight edge for White. In 2,645 lichess games from our sample, White scored 54.0%. A playable line for French fans, but White's space edge means Black needs patience and well-timed breaks.

What is the main idea of the Nimzowitsch Defense: Franco-Nimzowitsch Variation?

Black aims for a French structure with ...e6 and ...d5. White locks the center with d4 and e5, and Black attacks the pawn chain with ...f6 after ...Nge7.

What should White play next?

The engine's first choice is d4, with Nc3 and g3 close behind. 3.d4 takes the center with two pawns and prepares e5 once Black plays ...d5.

Updated October 2026. Sources and method.