Square One
    Opening Walkthrough
    1
    2
    3
    4
    5
    6
    7
    8h
    g
    f
    e
    d
    c
    b
    a
    Opening Coach

    French Defense

    C11You play black
    1/8
    Opponent to move…

    White takes the center. You'll challenge it — but not with …e5.

    Your line8 to go

    Play the moves — your line builds here as you go.

    The French Queen Raid

    5...Qb6 stares at b2 from move five. One White player in eleven leaves the a1 rook standing behind it.

    The French has a reputation for being passive. That reputation is a gift. You give White a big pawn on e5, he feels like he is attacking, and the whole time your queen is sitting on b6 pointing at the softest square on his board. This tree is built on one move — 5...Qb6 — and on what happens when White reaches for his dark-squared bishop to prop up d4. The famous wing gambit everybody quotes here is dead (4.b4 does not make White's top twelve replies; two games in the whole database reach the rook-losing position). What is alive is better: 6.Be3 walks into the b2 grab one game in eight, and nine percent of the time he answers with a move that leaves the a1 rook undefended.

    The line, move by move

    1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be3 Qxb2 7. Nbd2 Qxc3

    1. 1. e4 (opponent) He opens the way most people open. Nothing to fear and nothing to copy.

    2. 1... e6 (you) e6. Quiet, slightly ugly, and it tells him nothing. You are not fighting for e5 — you are getting ready to hit d4 with c5 and a queen.

    3. 2. d4 (opponent) d4, played 39% of the time and the most common answer to the French. He builds the big centre. Good — you cannot attack a centre that is not there.

    4. 2... d5 (you) d5. Now the e4 pawn has to make a decision, and every decision he makes gives you a different target.

    5. 3. e5 (opponent) e5, the Advance French, 47% and the most common by a street. He has grabbed space and locked the centre. The pawn on d4 is now the base of his whole structure — and it is defended by exactly one pawn.

    6. 3... c5 (you) c5! 72% of French players find this and they are right. Never mind the pawn on e5 — it is held up by d4, and d4 is what you attack. Everything from here is about how many pieces you can point at that one square.

    7. 4. c3 (opponent) c3, 56% and correct. The d4 pawn now has a second defender. It also means his knight on b1 can never come to c3 — remember that, because the a1 rook is about to depend on it.

    8. 4... Nc6 (you) Nc6, played by 60%. Attacker number two on d4. He is up to two defenders, you are up to two attackers, and it is still move four.

    9. 5. Nf3 (opponent) Nf3, 65%. Defender number three, and the most natural move on the board. Nothing wrong with it at all.

    10. 5... Qb6 (you) Qb6!! 49% play it and most of them think it is a third attack on d4. It is — but look one square further. The b2 pawn behind it is defended by nothing except the bishop on c1. If that bishop ever leaves, b2 is free, and the rook on a1 is standing right behind b2.

    11. 6. Be3 (opponent) Be3 — one game in eight. It is the most natural move in the position: a fourth defender for d4, developing, no obvious cost. The cost is that c1 is now empty. The engine already has this at -1.74 for him and he has not made a mistake yet, only a habit.

    12. 6... Qxb2 (you) Qxb2! Just take. 72% grab it here and the engine agrees hard: -1.31 for him after the capture. The other 12% insert cxd4 first — that measures only -0.19, so a whole pawn of advantage evaporates by being polite. Take now, and notice what your queen is doing: she attacks a1, and a1 has zero defenders. The knight on b1 is standing in his own queen's way.

    13. 7. Nbd2 (opponent) Nbd2, and 90% of players find it. The knight steps off b1, which clears the first rank so the queen on d1 finally sees a1. The rook is safe. He has also just abandoned c3 — that knight was the only thing defending it.

    14. 7... Qxc3 (you) Qxc3! 88% of players take here and it is free — chess.js confirms c3 has no white defender at all once the b1 knight moves to d2. He saved the rook by unguarding the pawn. Two pawns up, queen still healthy, and seven White moves have produced a bishop and two knights with both rooks still at home.

    Every branch cashes out

    7 coached branches in this family. Engine-checked finishes:

    • e5 / c3 / Be3 / Nbd2Sound line

      Two clean pawns, +1.3 for you, and this is his BEST line — the 90% move. He defended perfectly and still lost b2 and c3, because the two jobs were never doable at once. If he goes 8.Rc1 to chase the queen, she steps to a5 and the position is still -1.2 for him. Nothing about this required him to blunder.

    • e5 / c3 / Be3 / Bd3+5.3 by force

      +5.3 and a whole rook. And Bd3 is not the only door: Bc1 gives +6.6, Nfd2 +7.3, Qd2 +6.5, Be2 +5.9, Bb5 +5.5 — six different seventh moves, about one game in twenty-seven, all losing the rook the same way. Even his two 'clever' tries leak it: Qb3 (2%) and dxc5 (2%) also drop a1, just with some play attached (+2.7 and +2.1). Only Nbd2 and Na3 actually defend the thing, because only a knight leaving b1 lets his queen see the corner.

    • e5 / c3 / Bd3Sound line

      A real extra pawn — seven for his six — and the engine calls the position level at +0.24 for him, which is the honest number for a gambit that works. He has an open f-file, a bishop on d3 and a plan; you have the pawn and a queen nobody can touch. Know that this is the deal before you take it, and you will play the next ten moves calmly instead of in a panic.

    • e5 / c3 / b3Sound line

      +1.9 and a pawn to the good with his king glued to e1. The 54% capture Bxb4 is what most players choose and it is the worse half: the engine has it at -1.9 for him, against -1.2 if he recaptures on d4 first instead. Playing b3 to stop the b2 raid did not stop anything — it just moved the wound to c3.

    • e5 / Nf3Sound line

      +0.7 for you, the bishop pair banked, and his best light-squared attacker traded off on move six. The lesson is one square: whenever a bishop lands on b5 while your queen can reach b6, check whether anything is actually defending it. Here, nothing was.

    • exd5Sound line

      +0.4 for him, which in the Exchange French means nothing at all — it is a genuinely balanced game and that IS the result. He played the line designed to bore you into a draw, and you now have an active bishop on c5, a knight on f6 and an open c-file. Do not go hunting for a trap here. There isn't one, and knowing that is worth more than inventing one.

    • Nc3Sound line

      +0.7 for him and a completely playable game: dead level material, a pair of knights traded off, and your bishop on f6 holding the dark squares. No trap, no fireworks — this is the branch where the right answer is 'be solid and know it'. Against 3.Nc3 the mistake is not losing material, it is drifting; four accurate moves and you are simply fine.

    Why it works

    The French's reputation for passivity is the cover story. You concede space with e6 and d5, White pushes e5 feeling like the aggressor, and from move five a queen on b6 is staring at the softest square on his board. b2 is defended by exactly one piece, the bishop on c1, and the Advance structure keeps begging that bishop to go do a different job: d4 needs a fourth defender, Be3 is the most natural way to provide one, and one White player in eight plays it. The engine scores the position -1.74 for him the moment the bishop lands. He has not made a mistake yet, only a habit.

    Then the arithmetic turns cruel. After ...Qxb2, only two of White's twelve played replies give the a1 rook a defender, Nbd2 and Na3, because only a knight stepping off b1 lets the queen on d1 see the corner. Everything else leaves the rook on zero defenders: six different seventh moves hang it clean, worth +5.3 to +7.3, and weighting the replies by what people actually play, about one game in eleven ends with the rook simply falling to ...Qxa1.

    Even perfect defence pays. 7.Nbd2 saves the rook and 90 percent of players find it, but that knight was the only piece guarding c3, so ...Qxc3 takes a second free pawn: two pawns and +1.3 for Black against White's best line. The two jobs, defending the rook and defending the pawn, were never doable with one move. That is the mark of a well built trap line: the punishment scales with the mistake instead of vanishing against the right reply.

    How to punish the French Defense

    Playing White against the French raid, the rule fits in one sentence: while a black queen stands on b6, the c1 bishop is on guard duty and stays home. The tabiya offers real alternatives. The Milner-Barry setup with Bd3 keeps b2 covered and gambits the d4 pawn for open lines; the tree banks the pawn for Black and still calls the position +0.24 for White, the honest price of a gambit that works. Direct prevention with b3 exists too, but it only moves the wound to c3, where the Bb4 check and the Nxd4 trick cost a pawn anyway, -1.9 for White after the most popular recapture.

    If the queen has already taken b2, there is exactly one good move: Nbd2, clearing the back rank so your queen defends a1. Accept that c3 falls next and play for the lead in development, because every other reply ranges from a pawn worse to a whole rook worse. The one thing you may not do is develop normally: Bd3, a perfectly sensible move in almost any other position, hangs the rook on the spot.

    How to avoid falling into it

    The raid is armed by one square being vacated, so the check is mechanical: before any piece leaves c1 in an Advance French, ask who holds b2 afterwards, and whether your queen can see a1 through the knight on b1. Be3 fails both questions at once, which is why the most natural developing move in the position walks straight into the grab, one game in eight.

    Respect the queen's escape routes too. This is not a poisoned pawn story: measured on this tree, ...Qxb2 is simply good, chasing her with Rc1 still reads -1.2 for White after she steps to a5, and after the rook grab on a1 the board check found nothing attacking her at all. If you want a fight against the French, play the Milner-Barry on purpose rather than the rook heist by accident.

    Questions people actually ask

    Is the French Wing Gambit rook trap real?
    It is a museum piece. In 20.9 million games after 3...c5, the gambit move 4.b4 does not appear among White's top twelve replies; the twelfth most common move is played 0.16 percent of the time. The whole variation holds 16,758 games and the rook losing 6.axb4 appears in exactly two of them. This tree replaces it with the same idea at a hundred times the frequency: the Qb6 raid on b2.
    Is Qxb2 safe in the French Advance?
    After 6.Be3, yes, and hesitating costs. 72 percent of French players take, and the engine backs them at -1.31 for White; politely inserting ...cxd4 first shrinks the edge to -0.19, a whole pawn of advantage given back. The queen is not trapped either: after ...Qxa1 the board check found nothing attacking her, so she walks out whenever she likes.
    What if White defends the rook with Nbd2?
    The rook survives and the c3 pawn does not: the knight that guarded c3 just left, so ...Qxc3 is free, and 88 percent of players take it. Two clean pawns and +1.3 for Black against the defence 90 percent of White players choose. There is no branch where White keeps everything.
    How often does the a1 rook actually fall?
    About one game in eleven after ...Qxb2, weighting the replies by how often they are played. Six different seventh moves hang it outright at +5.3 to +7.3, and two more, Qb3 and dxc5, give it up with some play attached at +2.7 and +2.1. Only Nbd2 and Na3 defend it, because only a knight leaving b1 opens the queen's view of the corner.
    What should White play against the French to avoid the queen raid?
    The Exchange variation, chosen by 29 percent, is genuinely balanced: the tree admits its best line there measures a meaningless +0.4 for White and tells Black outright not to hunt for traps in it. The Milner-Barry gambit is the fighting option that keeps b2 defended. What you cannot do is play the Advance main line on autopilot: c3, Nf3 and Be3 are the three most natural moves in the structure, and the third one is the trap door.

    Drill the French Defense against a real opponent

    The trainer above plays every branch with a coach explaining each move. When you are ready, take it into a live game, or paste your Chess.com or Lichess username and see which openings actually cost you rating.

    Play it for realGet your free scout report

    More opening weapons

    New to openings? Learn openings without memorizing explains the approach behind every walkthrough here, and the free AI chess coach guide covers what the rest of the app does without a card.