London System
One setup against almost everything. The most popular opening at club level - and the most complained about.
| First moves | 1.d4 d5 2.Bf4 (or 1.d4 Nf6 2.Bf4) |
|---|---|
| ECO codes | D00 (2.Bf4), D02 (2.Nf3 then Bf4), A45 (Jobava, via 1...Nf6) |
| Character | System-based, low theory, solid |
| Best for | Players short on study time who want the same positions every game |
Open any line on the analysis board, or play it out against a bot from where it ends.
Related openings
Queen's Gambit
The most respected way to open with 1.d4, and the opening that gives its name to everything from the Slav to the Semi-Slav.
English Opening
A flank opening that fights for d5 from the side - and transposes into half the openings in chess.
Slav Defense
The Queen's Gambit Declined without the bad bishop - and one of the soundest defences in chess.
The setup
The London is a system, not a variation: White plays d4, Bf4, e3, Nf3, c3, Bd3, Nbd2 and O-O in almost any order, against almost anything. The bishop comes out to f4 before e3 shuts it in - that move order is the one non-negotiable detail.
From there White has two standard plans: the kingside build-up with Ne5, Qf3 or Qe2, and a pawn storm; or the central break c3-c4 to open the position once Black has committed.
Why club players love it
You reach the same structure every game, so your pattern knowledge compounds instead of being spread thin across twelve variations. You cannot be caught in an opening trap you have never seen. And it is genuinely sound - top players including Carlsen have used it at the highest level.
The honest cost: your winning chances against a prepared opponent are lower than with a main-line opening, because Black can equalise with accurate play. The London wins games on middlegame understanding, not on the opening.
How to play against the London as Black
The London is at its best against passive setups. Challenge it early:
- Play ...c5 quickly. The London's d4 pawn is defended by c3 and little else, and White's dark-squared bishop is outside the chain and cannot help.
- Play ...Qb6. With the bishop on f4, b2 is loose. White must answer with Qb3, b3 or Qc1, all slightly awkward.
- Consider ...Bf5 or ...Bg4 early, developing your problem bishop before ...e6 locks it in - the same idea that makes the Caro-Kann work.
- Do not mirror passively with ...e6, ...Be7, ...O-O and no break. That is exactly the position the London player wants.
The Jobava London (2.Bf4 with 3.Nc3, often with Qd2 and O-O-O) is a different animal: far sharper, aimed at a quick attack, and increasingly common online. Prepare for it separately.
Frequently asked questions
Is the London System good for beginners?
It is one of the best practical choices for a beginner with limited study time: no traps to memorise, one setup to learn, and a solid position every game. Just be aware that you are trading long-term learning about open positions for short-term reliability.
Is the London System boring?
The main line is quiet by design, but the Ne5 kingside attack and the Jobava variation are genuinely aggressive. Its reputation for dullness comes from players who set the pieces up and then have no plan - the setup is the beginning of the game, not the whole of it.
What is the best answer to the London System?
The most testing approach is an early ...c5 combined with ...Qb6, hitting d4 and b2 at the same time. Getting your light-squared bishop outside the pawn chain with ...Bf5 before playing ...e6 is the other key idea.