The London System: a complete repertoire for 1.d4 players

Why play the London

The London System is the most practical White repertoire for the 1300–1700 range. Not a “secret weapon” — a universal development scheme that works against almost everything.

What it gives you:

• Less theory. Know 6–8 moves and a couple of typical plans — against any Black response.
• No surprises. Black can’t prep you out of the opening.
• Clear middlegame plans. Kingside attack via Ne5+f4, or queenside expansion via c4/b4.
• Carlsen plays it regularly. It’s not a “weak player’s opening.”

What’s not ideal:

• At top level it gives Black easy equality.
• A bit dry for tactics lovers.

At 1300–1700 these downsides don’t matter. You have a system you understand and play automatically — that’s enough.

Core development scheme

Memorize the sequence:

1.d4
2.Nf3
3.Bf4    ← key move — bishop outside the pawn chain BEFORE e3
4.e3
5.c3     ← supports d4, prepares Qb1/Bd3 ideas
6.Nbd2   ← NOT Nc3! the c-pawn needs to stay flexible
7.Bd3    (or Be2)
8.h3     ← prophylactic against ...Bg4 / ...Nh5
9.O-O

That’s the base scheme. The exact move order is flexible, what matters is the picture: bishop on f4, knights on f3 and d2, pawns on c3-d4-e3, bishop on d3, kingside castling.

Two main plans

Plan A: kingside attack

1. Ne5 — the knight takes a dominant central square.
2. f4 — supports the knight, prepares the storm.
3. Qf3 or Qh5 — queen heads for the king.
4. Rae1 or Rf3-h3 — rook joins the attack.
5. g4-g5 or h4-h5 — pawn storm.

Works when Black has castled short and hasn’t set up serious defence.

Plan B: queenside expansion

1. c4 or a3 + b4 — pawn expansion.
2. Qb3 or Qb1 — supports b4-b5.
3. Rfc1 — rook on the c-file.
4. b5 — minority attack, target Black’s c6 pawn.

Works in more closed positions where the kingside attack doesn’t go through.

Which plan to choose follows from Black’s setup. If Black sits closed (…c6, …Nbd7) — plan B. If they’ve castled and weakened pawns — plan A.

Against 1…d5 (classical London)

After hxg3 you have:

• Semi-open h-file (rook on h1 ready for h4-h5).
• Bd3 + Nf3 + queen pointing at the king.
• Black’s bishop is gone — fewer kingside defenders.

Standard London position where you go with plan A.

If Black plays 4…c5

Same idea — keep the bishop, then plan A or B.

Against 1…Nf6 + …g6 (King’s Indian / Grünfeld setups)

Then the plan: either c4 (central break) or c3 + Nbd2 (classical London). At 1300–1700 just play c3 and develop calmly.

Don’t fear the fianchetto. The g7 bishop is strong, but your central pawn structure (c3-d4-e3) gives stability.

Against 1…Nf6 + …c5 (Benoni, Benko)

Here the London “doesn’t work” — against …c5 on move 2 you should close the centre. Exception to the pure-London scheme.

Alternative: 3.e3 cxd4 4.exd4 — play a symmetrical pawn position without losing tempos on Bf4.

Against early …Bf5 (mirror London)

In the mirror London White is always better — a tempo up.

Against early …c5 (move 2 with pawn d5)

Model games

Don’t try to “memorize” these games — just watch them 2–3 times. Goal: see how the ideas work.

Open any of them — replay slowly on your own first, then check with Stockfish via free analysis or the PGN analyzer.

When to move on

The London works up to ≈1700–1800. Signs to switch:

• You consistently beat 1500–1700 opponents but hit easy Black equality against 1800+ and can’t play for a win.
• You’re bored and want deeper strategy.
• You understand what the “Carlsbad structure” is and want to play it.

Next step — the classical Queen’s Gambit and the Carlsbad structure with the minority attack. Detail — Carlsbad structure and minority attack.

Related

• How to grow from 1300 to 1700 — overall plan.
• Minimal opening repertoire — why “one system” works.
• Minimal Black repertoire — Black-side counterpart to the London.
• Carlsbad structure — next step after the London.
• Free Stockfish analysis — to review your London games.