Chessy
How to Play the London System against 1.d4 d5 2.Nf3 e6 3.Bf4 c5
After 1.d4 d5 2.Nf3 e6 3.Bf4 c5, the London System heads into sharp territory. Black challenges your centre immediately, and with 4.Nc3 you defend the d-pawn while developing. This position has been played over a quarter of a million times on Lichess, and the results are razor-close: White wins 49.2%, draws 3.6%, and Black wins 47.2%. The engine evaluates the position at -0.18, meaning it is dead level — neither side is better out of the opening. Below, you'll play through the critical responses Black can throw at you and learn what the statistics reveal about each one.
Play the Queen's Pawn Game: London System, with e6: c5 against the engine
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Create a free account →What You Are Fighting For in This Position
The London System is known for its solid, flexible setup, but here Black's ...c5 push tests you early. Your move 4.Nc3 develops a piece and supports the d4 pawn, keeping the central tension. The key question is whether Black will trade on d4, attack your centre with ...c4, or simply continue developing. Because the position is dead level, small inaccuracies matter a lot — one slightly off move can hand your opponent the initiative. Your goal is to keep the position balanced while avoiding the two moves that the statistics flag as losing you serious advantage: c4 and Qb6.
The Engine's Best Move and How to Respond
Stockfish's top choice for Black here is Nf6, continuing with ...e3 a6 dxc5. Against that line, you'll aim to recapture on c5 and maintain a healthy pawn structure. But you won't face the engine's favourite every time — the most popular move in practice is Nc6, appearing in over 92,000 games. Against Nc6, White scores 50.7%, the best winning percentage against any reply. Keep developing naturally (e3, Be2, 0-0) and the position stays balanced. The second most popular move is cxd4 (55,711 games), where White scores 48.7% — again, solid. Just don't rush to grab space; let Black overextend.
Two Moves to Avoid (And One You'll See Often)
Two responses from Black are genuine mistakes you can exploit. c4 (25,673 games) is an inaccuracy that costs Black roughly 0.9 pawns. If Black pushes the c-pawn past your pawn, they weaken their centre and give you a target. The correct response was Nf6 — so if Black plays c4, you are already ahead. Even worse is Qb6 (13,539 games), a full mistake that loses about 1.1 pawns. When Black puts the queen on b6, they are hoping for a quick check or attack on b2, but you can defend easily and develop with tempo. The other common reply, a6 (17,692 games), is not flagged as a mistake but gives White only a 45.5% score — so if you see a6, stay alert and keep your central pressure.
What the Statistics Tell You About Your Chances
With 254,717 games in the database, this is one of the most tested positions in the London System. The 49.2% win rate for White and 47.2% for Black confirm the engine's assessment: this is essentially a toss-up. Draws are rare at just 3.6%, meaning you will almost always reach a fighting middlegame. That makes this an excellent opening to study — you are not gambling on a tricky line, but entering a balanced struggle where your understanding of typical London System plans will decide the outcome. Focus on solid development, avoid c4 or Qb6 from your opponent's side, and the position will reward you.
Results across 254,717 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nc6 | 92,256 | 50.7% |
| cxd4 | 55,711 | 48.7% |
| Nf6 | 29,712 | 48.6% |
| c4 | 25,673 | 48.5% |
| a6 | 17,692 | 45.5% |
| Qb6 | 13,539 | 47.1% |
Frequently asked questions
Is the London System with e6 c5 good for White?
Yes, it is perfectly playable. The engine evaluates the position at -0.18, which is dead level — no advantage for either side. White wins 49.2% of games, almost identical to Black's 47.2%, so your results will depend on outplaying your opponent in the middlegame, not on a surprise advantage out of the opening.
What is the most common reply to 4.Nc3 in the London System?
The most popular move by far is Nc6, played in over 92,000 games. Against Nc6, White scores 50.7%, the best winning percentage against any Black reply. Just continue with e3, Be2, and castle — there is no need to force anything.
Is c4 a bad move for Black in this London System line?
Yes, c4 is classified as an inaccuracy that loses about 0.9 pawns. If Black pushes the c-pawn, they weaken their centre control and give you a target to attack. The correct move was Nf6, so if you see c4, you can be confident you've gained an edge.
What should I do if Black plays Qb6?
Qb6 is a mistake that loses around 1.1 pawns. Black is threatening your b2 pawn and potentially looking for a quick check, but you can defend easily. Develop your pieces, protect your b-pawn, and you will emerge with a clear advantage.
How many games feature the Queen's Pawn Game: London System, with e6: c5?
Over 254K Lichess games have reached the Queen's Pawn Game: London System, with e6: c5 position. White wins 49.2%, Black wins 47.2%, with 3.6% draws — based on real rated games.