London System

Strategic Summary & Main Idea

The London System (1.d4 d5 2.Bf4 Nf6 3.e3 c5 4.c3) is the most popular White set-up in amateur chess this decade, and the reason is an honest one: it is played nearly the same way against everything, which saves dozens of hours of theory. What it does not do is grant an advantage. The position after 4.c3 measures exactly 0.00, and the sharper version, the Jobava, measures −0.04 — Black is already marginally better.

The pawn structure this opening produces

The London builds a pawn pyramid on c3, d4 and e3, with the dark-squared bishop outside it on f4. It is a structure without weaknesses and without ambition: there is no pawn that can be attacked, and none that generates pressure either. White's game depends entirely on pieces — Bd3, Nbd2, Ne5 and, when it works, an attack with Qh5 and Rf3. From Black's side the structure suggests its own cure: hit the base of the pyramid with ...c5 and ...Qb6, which eyes b2 and d4 at once, and develop the c8-bishop to f5 or g4 before shutting the diagonal with ...e6. Playing the London against someone who knows this is not worse — but it is not better either, and that is what the evaluation says. It is worth saying what the London does solve, because it is not nothing: it wipes out the opponent's preparation. Against a player who has studied twenty moves of Nimzo-Indian, White's set-up reaches move 10 with none of that memorised line having mattered. That never shows up in an evaluation, and it is the honest reason the system became the most played in amateur chess — what this page measures is its ceiling, not its usefulness.

Main Variations of the London System

Evaluations measured by us with Stockfish 19, depth 22, on 14 Sep 2026.

Frequently asked questions

Does the London System give White an advantage?

No, and the number is blunt: the position after 4.c3 measures 0.00. The London is not a bad opening — it is an opening that trades advantage for predictability. For someone with two hours of study a week that trade can be worth it; what does not hold up is the idea that it presses.

What is Black's best answer to the London?

...c5 followed by ...Qb6 is the most awkward: it attacks the base of the pyramid and the b2-pawn at once and forces White to commit early. The line measured here sits at +0.11 for White, but it is the only one where the set-up needs precision instead of autopilot.

Is the Jobava better than the classical London?

It is sharper and it measures less: −0.04 against +0.05 for the c3 set-up. The trade is one of character, not quality — the Jobava produces tactical positions early, where calculation decides, and the classical London produces long manoeuvring. Neither yields an opening advantage.

Guides on this opening

• Chess training for busy adults: the 30-minute-a-day method
• The Jobava London System: attacking with 1.d4 without memorizing endless lines
• The London System: a complete guide, its plans, and how not to play on autopilot
• Corporate chess leagues: what changes when the point belongs to the team
• Torre Attack: a practical guide to 3.Bg5, and which defences the system actually beats
• The Colle-Zukertort System: the set-up, the promised attack, and what the engine says about it

Common Mistakes & Where Most Amateurs Go Wrong

• 01 White trading the bishop on b8 to save the b2-pawn: Black's rook regains the tempo, the bishop pair is gone and the edge changes sides. The line: 1.d4 d5 2.Bf4 Nf6 3.e3 c5 4.c3 Qb6 5.Bxb8 Rxb8 −0.49