Because the London System is a setup rather than a forcing opening, its “variations” mostly come from what Black does, plus a few different flavors White can choose. Think of it as one recipe with a handful of optional spices. Here’s the full menu, from the must-know …c5/…Qb6 test to the spicy Jobava London.
The 30-second version
- The London adapts to almost everything; the variation is usually defined by Black’s central setup.
- Must know: the …c5 + …Qb6 line (hits d4 and b2). White: Qc1, Nc3, or b3.
- Spicy White option: the Jobava London (2.Nc3) — sharper and more aggressive.
- Vs. fianchetto (…g6/…Bg7): swap Bd3 for Be2 and add h3.
Step through the line
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The critical ...c5/...Qb6 line — White develops with tempo and isn't afraid to give up b2.
The variations at a glance
| Variation / Setup | How it arises | Core idea | Who it favors |
|---|---|---|---|
| Modern move order | 2.Nf3 then 3.Bf4 | Dodge Black’s early pokes | Slight edge in safety for White |
| …c5 / …Qb6 | Black hits d4 and b2 | Black’s main equalizer | Roughly equal with accurate play |
| …Bf5 / …Bg4 | Black frees the light bishop | Black avoids a bad bishop | Balanced |
| Trade with …Bd6 | Black offers a bishop swap | Defuse White’s battery | Balanced, slightly easier for Black |
| Jobava London (2.Nc3) | White plays Nc3 + Bf4 | Aggressive, e4 ideas | Sharper, double-edged |
| Vs. King’s Indian / Grünfeld | Black fianchettoes | White uses Be2/h3 | Comfortable, solid for White |
The …c5 / …Qb6 line (the one to know)
This is the most important variation in the whole London, full stop. Black plays …c5 to attack d4 and …Qb6 to pile on d4 and the now-undefended b2-pawn.
White’s honest, well-tested replies:
- 4.Qc1 — the quiet defender. Guards b2, keeps the position complex, and White untangles with Nf3, Bd3, and castling. The most solid choice.
- 4.Nc3 — develop with tempo and just let b2 go if Black insists. Grabbing it with …Qxb2 is greedy and dangerous (see the traps page for the full punishment).
- 4.b3 — simply support the pawn with another pawn and carry on building. No fuss.
A quick accuracy note: you might expect the natural “offer a queen trade with Qb3” here — but in this exact position the queen can’t reach b3, because White’s own c2-pawn blocks the d1–b3 diagonal. That’s a common beginner assumption worth unlearning. Stick to Qc1, Nc3, or b3.
The verdict: with accurate play this is roughly equal, not a White edge. But White is never worse, and the positions are easy to play once you’ve seen them.
…Bf5 and …Bg4 (Black frees the light bishop)
A smart idea for Black: develop the light-squared bishop outside the pawn chain (to f5 or g4) before playing …e6 and locking it in — exactly the trick White used with the f4-bishop.
White just keeps building (Nf3, c4 or c3, Nc3/Nbd2). Sometimes White hits the bishop with ideas like Nh4 or a quick c4 to open lines. Perfectly playable for both sides.
Trading with …Bd6
Black often develops the dark-squared bishop to d6, offering to swap it for White’s prized f4-bishop. White’s standard response is to slide the bishop to safety with Bg3 rather than allow the trade for free. If Black does capture, White recaptures and accepts a slightly more symmetrical, still-fine position.
Recapturing with hxg3 even opens the h-file for White’s rook, which can feed a kingside attack. Trading off White’s “good” bishop sounds clever for Black, but it’s a fair, balanced trade — not a refutation.
The Jobava London (2.Nc3) — the aggressive cousin
Named after the inventive Georgian GM Baadur Jobava, this version goes 1.d4 d5 2.Nc3 Nf6 3.Bf4 (or 2.Nc3 / 3.Nc3 move orders). By putting the knight on c3 instead of d2, White keeps the option of a quick e4 break and generates sharper, more attacking positions.
The trade-off: it’s livelier and more fun, but it gives up the rock-solid, low-theory feel of the classic London — and it allows Black some sharp counters (like …a6 and …c5 ideas). A great surprise weapon if you want more bite.
London vs. the fianchetto defenses (King’s Indian / Grünfeld setups)
When Black plays …g6 and …Bg7 (King’s Indian or Grünfeld style), the b1–h7 diagonal isn’t as juicy, so White adapts: develop the light bishop to Be2 instead of Bd3, and play h3 so the f4-bishop has a safe home on h2.
It’s a calm, comfortable way to neutralize one of Black’s most aggressive setups without learning a whole separate opening. Very much in the London spirit.
Black plays an early …c5 (move 2)
Some players don’t wait — they hit the center immediately with 2…c5 (or 2…Nf6 then …c5). It’s a perfectly reasonable try, and it leads straight into the …Qb6 ideas above if Black follows up with the queen. White’s recipe stays calm: support d4 with e3 and c3, develop Nf3 to defend d4 a second time, and only worry about b2 if and when …Qb6 actually appears. The London’s pawn-pyramid (d4/e3/c3) is specifically built to absorb the …c5 pressure, so there’s no need to panic — just complete the setup and the center holds.
The Bishop’s recapture: hxg3 vs. fxg3
A small but important sub-decision: when Black trades on g3 with …Bxg3, which pawn recaptures?
- hxg3 opens the h-file for your rook — choose this when you’re attacking on the kingside. It’s the more aggressive recapture.
- fxg3 keeps your kingside pawns tidier and opens the f-file instead — a calmer, more positional choice that also supports an e4 break later.
Most attacking London players prefer hxg3 for the open h-file aimed at Black’s king. It’s a tiny decision that shapes the whole middlegame, so it’s worth knowing both.
So which variation should you play?
- Want maximum solidity and minimum study? Classic London with the modern 2.Nf3 order. Learn the …Qb6 answer and you’re set.
- Want more attacking chances and don’t mind some risk? The Jobava London.
- Facing a fianchetto? Switch to Be2 + h3 on autopilot.
Keep exploring
- The London setup, move by move
- London System traps & tricks
- Best London System master games
- How to beat the London (as Black)
- Back to the London overview and the openings hub
Want the more theoretical d4 alternative? Compare with the Queen’s Gambit. New to all this? Start with opening principles.
Written and fact-checked by the Chess Lab Academy Editorial Team (AI-assisted, human-edited) · Lines checked against mainstream opening theory and verified with Stockfish 17 · ECO D02 / A45–A48 · Last verified 2026-06-25 · Sources · How we verify content.