The French Defense: La Bourdonnais Variation (1.e4 e6 2.f4 c5) leads to a position where Stockfish sees the game as dead level at -0.15 — no advantage for either side. After 3.Nf3, you are playing White with a solid but flexible setup. The engine's top recommendation is the immediate 3...d5, challenging the centre, but your opponents will try many different replies. The database of 2,287,206 games shows a razor-thin split: White wins 48.1%, Black 48.7%, and draws are rare at 3.1%. Your task in the drill below is to navigate whatever Black throws at you.
On this page
Play the French Defense: La Bourdonnais Variation: c5 against the engine
Free, no signup — you play white, the engine adapts to your level.
Now try the La Bourdonnais Variation c5 drill yourself. Play White against an adapting engine and see if you can improve on the 48.1% win rate. Create a free ac
Find your own #1 mistake — free →What You're Fighting For: The Centre
After 1.e4 e6 2.f4 c5 3.Nf3, the f2-f4 push has given you a strong pawn on e4 and a second pawn on f4, securing a broad centre. Black's ...c5 attacks your d4 square, trying to undermine your pawn chain. The engine's best reply for Black is 3...d5, immediately challenging your e4 pawn. If Black plays d5, the game continues with Nc3, and if Black follows with d4, you have Bb5+ — pinning the knight that may come to c6. Your central space is your main asset. Keep it, don't give it away. In 2,287,206 games from this position, the results are nearly symmetrical, confirming that this is a battle of understanding plans, not memorised lines.
The Critical Moment: When Black Plays 3...d5
The most principled reply is 3...d5, played 548,331 times, though White's score drops slightly to 46.3% here — suggesting Black is doing something right. When you see 3...d5, your job is straightforward: develop with Nc3, maintaining the tension. If Black pushes d4, you have Bb5+ to disrupt Black's coordination. The engine's line (d5 Nc3 d4 Bb5+) shows a concrete plan. Do not be afraid of an open centre — your pieces are well-placed to act quickly. If Black avoids d5 and plays something slower, you can build a kingside attack, which is the traditional appeal of the f4 advance.
The Most Popular Reply: 3...Nc6
Black's most common move by far is 3...Nc6, appearing in 816,815 games. White scores 48.1% — exactly the overall average. The knight on c6 puts pressure on your d4 square and supports ...d5 or ...e5 breaks. Your plan should be natural development: d3 to solidify your centre, then complete kingside development and castle. The statistics show nothing special happens from this move — it's a normal developing move. Stay calm, develop your pieces, and keep your pawn centre intact. Black hasn't committed to a central break yet, so you can afford to castle and prepare an f4-f5 push if Black dawdles.
The Big Mistake to Punish: 3...d6
One move stands out as a clear error: 3...d6. This has been played 122,824 times and White scores a healthy 50.1% — the highest win rate against any major reply. The engine calls 3...d6 an inaccuracy, losing about half a pawn. Why? It's passive. Black blocks their own light-squared bishop, doesn't challenge your e4 pawn, and wastes time. Instead of d6, the engine says Black should play d5 immediately. When you see 3...d6, you should be alert: Black has handed you a small edge. Develop quickly, perhaps with d4 (opening the centre while Black's pieces are still sleeping), or prepare a direct kingside initiative. This is your best chance to score.
What the Numbers Tell You About Your Chances
Across all 2,287,206 games in this exact position, the outcome is remarkably balanced: White 48.1%, Black 48.7%, draws 3.1%. That draw rate is very low for a modern opening — the position leads to decisive games almost every time. The La Bourdonnais with 3.Nf3 is not a drawing weapon. If you want sharp, unbalanced chess with winning chances for both sides, you are in the right place. Remember, the engine evaluation is -0.15, dead level. Trust your understanding of development and pawn structures rather than memorised theory.
Results across 2,287,206 Lichess games
| Most-played continuation | Games | White wins | |
|---|---|---|---|
| 1 | Nc6Main line | 816,815 | 48.1% |
| 2 | d5 | 548,331 | 46.3% |
| 3 | a6 | 309,411 | 48.2% |
| 4 | d6 | 122,824 | 50.1% |
| 5 | Nf6 | 115,034 | 50.3% |
| 6 | Be7 | 93,170 | 47.9% |
Frequently asked questions
Is the French Defense La Bourdonnais Variation good for White?
It's dead level. Stockfish evaluates the position at -0.15, meaning neither side has any advantage. White wins 48.1% and Black wins 48.7% across 2,287,206 games. It's a fighting opening, not a way to gain an edge from the opening.
What is the best move for Black after 1.e4 e6 2.f4 c5 3.Nf3?
The engine recommends 3...d5 as the best reply, followed by Nc3 d4 Bb5+. However, Black plays 3...Nc6 most often (816,815 games). Both are fine moves; you should be ready to face either one.
Why is 3...d6 a mistake in this position?
The engine flags 3...d6 as an inaccuracy that loses about half a pawn. It's too passive: it blocks Black's light-squared bishop and doesn't challenge your central pawn on e4. White scores 50.1% against it. The correct move was 3...d5.
What does White score from the La Bourdonnais c5 line?
White wins 48.1% of games, Black wins 48.7%, and only 3.1% end in draws. The low draw rate means the position leads to decisive, unbalanced games where your middlegame skill matters more than opening theory.
How many games feature the French Defense: La Bourdonnais Variation: c5?
Over 2 million Lichess games have reached the French Defense: La Bourdonnais Variation: c5 position. White wins 48.1%, Black wins 48.7%, with 3.1% draws — based on real rated games.