Chess.com - Play and Learn: How to Play the London System

To play the London System as White in Chess.com - Play and Learn, open with 1.d4, develop your dark-squared bishop to f4 on move two or three, and secure your center with pawns on c3 and e3. Developing the bishop outside the pawn chain before playing e3 ensures active piece play while establishing a durable central wedge.

Standard Setup and Move Order

The London System allows White to reach a harmonious opening setup against almost any defensive choice by Black, including 1...d5 and 1...Nf6. Complete the setup through the following steps:

Advance the queen's pawn (1.d4): Stake an immediate claim on the central e5 and c5 squares.
Develop the bishop (2.Bf4): Bring your dark-squared bishop out to f4 before moving your central pawns.
Close the center (3.e3): Reinforce d4 and open a diagonal for your light-squared bishop.
Complete the pawn triangle (c3): Build a pawn pyramid on c3, d4, and e3 to absorb pressure against the center.
Develop the knights: Place your king's knight on f3 to control e5 and your queen's knight on d2 to support e4.
Deploy the remaining kingside pieces: Place your light-squared bishop on d3 and castle kingside.

Do not play an early 2.e3 before moving your dark-squared bishop. Closing the pawn chain too soon traps the bishop on c1 and leaves White with a passive, cramped position.

Protecting the Dark-Squared Bishop

Because the f4 bishop controls the critical b8–h2 diagonal and monitors e5, Black often attempts to trade it off or hunt it down.

Responding to ...Bd6: When Black challenges your bishop directly on d6, retreat to g3. If Black captures with ...Bxg3, recapture with the h-pawn (hxg3). This opens the h-file for your kingside rook, creating attacking opportunities against Black's kingside.
Responding to ...Nh5: If Black maneuvers a knight toward h5 to secure the bishop pair, play a preemptive h3. This creates a retreat square on h2. When the knight attacks f4, retreat the bishop to h2 so it remains active along the diagonal while stranding Black's knight on the rim.

Neutralizing Early Queen Pressure on b6

When White plays Bf4, the b2 square is temporarily left without pawn protection. Black frequently combines an early ...c5 thrust with ...Qb6 to attack b2 and contest the center.

Black's Action	White's Response	Objective
...Qb6 attacking b2	Qb3	Defends b2 and offers a queen exchange.
...Qxb3 exchange	axb3	Opens the a-file for White's rook without structural harm.
...cxd4 central trade	cxd4	Recaptures with a pawn to maintain the c3–d4 wedge.
...Nc6 pressuring d4	Nbd2	Reinforces d4 and covers the e4 square.

If Black declines to trade queens on b3, continue developing naturally by placing the light-squared bishop on d3 and castling kingside.

Converting the Setup into a Kingside Attack

Once your center is stable and pieces are developed, shift your focus toward Black's kingside:

Occupy the e5 outpost: Plant a knight on e5. If Black captures it, recapture with the d-pawn (dxe5). This pawn push attacks and displaces Black's defensive knight on f6.
Aim at the king: Keep your light-squared bishop on d3 targeting the h7 square.
Coordinate the queen: Move your queen to f3 or h5 to create direct batteries against h7 and f7.
Advance pawns if closed: Push f4 or g4 if the center stays locked to reinforce attacking pieces.
Execute a rook lift: Swing a rook to the third rank via Re1–e3–h3 or Rf3–h3 to reinforce pressure against Black's castled king.

Keep your knights and c3 pawn actively controlling e4 and e5 throughout the transition. Preventing Black from executing an early ...e5 pawn break ensures White maintains central control while conducting kingside threats.