The French Defense
The French Defense starts 1.e4 e6 2.d4 d5. Black stakes a claim in the center at once and accepts a cramped light-squared bishop in return. The games are strategic. White owns more space. Black attacks the base of White's pawn chain and waits for the position to open on favorable terms.
The pawn chain
After 3.e5, or after 3.Nc3 Nf6 4.e5, the center is locked: White pawns on d4 and e5, Black pawns on d5 and e6. White's space is on the kingside. Black's counterplay is on the queenside, almost always starting with ...c5, hitting d4. A second lever is ...f6, chipping at e5. That move also opens the f-file and loosens the king, so it is a decision, not a habit.
White wants to keep d4 defended, develop the pieces behind the chain, and use the space to build an attack if Black castles kingside. Black wants the c-file, pressure on d4, and a home for the bishop on c8.
White's third move
3.Nc3 is the classical choice. It defends e4 and keeps the option of taking on d5 or pushing e5. If Black plays 3...Bb4, you are in the Winawer, where Black pins the knight and puts real pressure on e4. If Black plays 3...Nf6, the usual continuation is 4.e5 Nfd7. White then chooses between f4, Nf3, and quiet piece development, all aimed at keeping the pawn on e5.
3.Nd2 is the Tarrasch. The knight is less active, and it avoids the pin on b4. White can later play c3 and support d4, or take on d5 and play against an isolated pawn. 3.e5 is the Advance. It locks the center immediately and gains time. 3.exd5 exd5 is the Exchange, which is solid and often dull. Black's light-squared bishop is freed, so White has given up the main French problem in return for easy development.
The bishop on c8
This is Black's problem piece. The pawn on e6 blocks it. The usual cures are ...b6 and ...Ba6, trading it for White's light-squared bishop, or ...Bd7 followed by a later maneuver once the center changes. In the Advance, ...Qb6 and ...Bd7 together put pressure on d4 while the bishop waits.
Do not leave the bishop on c8 until move 30 and then wonder why your rooks are not connected. Pick a diagonal for it by move 12: a6, d7, or, after the center opens, the long diagonal.
A plan you can remember
As Black, after the center is defined: develop the king's knight, play ...c5, develop the queen's knight to c6 or d7, and castle. Then decide whether the light-squared bishop belongs on a6. As White: defend d4 with c3 or with pieces, get the king's knight to f3, castle, and only then look at f4–f5 or a piece attack.
Opening habits that apply before any of this are in mastering the opening.
Frequently Asked Questions
Is the French too passive for Black?
It is cramped in the first ten moves. The counterplay with ...c5 is concrete, and many strong players have used the French as their main defense to 1.e4.
Should White always push e5?
No. Taking on d5 or keeping the tension with Nc3 are both respectable. e5 gains space and defines the plans. It also gives Black a clear target on d4.
What if I hate the bishop on c8?
Play a different defense. The Caro-Kann develops that bishop outside the pawn chain. It is covered in the Caro-Kann.
Space for White, the c-file for Black
Play a few French games against the engine on Play vs AI and watch what happens to d4 after ...c5. Then open the position in the analyzer and ask chess hints whether the light-squared bishop ever found a square.
Try the line on the board with chess hints.