The Jobava London Is Carlsen's New Rapid Weapon

Why Magnus Keeps Reaching for 1.d4 and 3.Nc3

Watching Magnus Carlsen tear through rapid fields this month, one thing jumps out: he's been having a lot of fun with the Jobava London System. The classical London (1.d4 d5 2.Bf4) has a reputation for being solid but toothless. The Jobava version injects poison. Instead of the timid setup, White develops the knight to c3 first, eyeing a quick e4 break and a kingside pawn storm.

The starting moves are simple to remember, which is exactly why it suits a fast time control: 1.d4 d5 2.Nc3 Nf6 3.Bf4. No deep memorization, just ideas. And that's the whole point — in a 10-minute game, you want your opponent thinking at move 5, not reciting prep.

The Core Tabiya

Let's reach the key position. After 1.d4 d5 2.Nc3 Nf6 3.Bf4 e6 4.Nb5, White immediately pokes at the c7 square. Black's most testing response is 4...Na6, defending c7 and preparing ...c6 to kick the knight. Play often continues 5.e3 Bd6 6.Bg3 c6 7.Nc3 O-O, and now White has a flexible position with the thematic plans of Bd3, f4, and a kingside advance.

The alternative square-grab, 4...e5 (instead of 4...e6 earlier), is the sharpest antidote. After 1.d4 d5 2.Nc3 Nf6 3.Bf4 e5!?, Black sacrifices a pawn: 4.dxe5 Ne4 5.Nxe4 dxe4 6.Qxd8+ Kxd8 leads to an endgame where Black has decent activity for the pawn. Carlsen, interestingly, has shown he's happy to take this endgame as White — he trusts his technique to convert the extra pawn even in rapid.

Key Ideas for White

• The Bf4–e5 clamp. Planting a piece or pawn on e5 cramps Black and supports a kingside attack. Watch for the maneuver Nf3–e5 or f2–f4–f5.
• Castle queenside and storm. With Qd2 and O-O-O, White can throw the h- and g-pawns forward. This is the dream scenario and why the opening scores so well in blitz.
• The Nb5 nag. Hitting c7 early forces concessions. Even if the knight retreats, Black has often spent a tempo on ...a6 or ...Na6.

Key Ideas for Black

• Grab space with ...c5. The classical central counter. After ...c5 and ...Nc6, Black challenges d4 and gains queenside play.
• Neutralize the dark-squared bishop. The Bf4 is White's pride and joy. Trading it with ...Bd6 or ...Nh5 takes the sting out of White's attack.
• Don't fear the Nb5. ...Na6 followed by ...c6 is clean and solid. Black often ends up fine with the bishop pair in a solid structure.

A Model Attacking Sequence

Here's the kind of position White dreams about. From a recent online rapid pattern: 1.d4 d5 2.Nc3 Nf6 3.Bf4 c6 4.e3 Bf5 5.f3! — preparing g4 and e4. After 5...e6 6.g4 Bg6 7.h4 h6 8.Qd2, White is already castling long with a raging pawn storm, while Black's light-squared bishop on g6 risks getting trapped. In a rapid game, defending this as Black is genuinely unpleasant.

Notice the engine's verdict is usually around equal — but equal on the clock is a world apart from equal over the board. The Jobava is a practical weapon, not a theoretical knockout, and that distinction is exactly why it thrives in Carlsen's rapid repertoire.

Should You Add It to Your Arsenal?

If you currently play the classical London and find yourself drifting into dull, drawish middlegames, the Jobava is the perfect spice. It costs almost nothing in study time and gives you a fighting setup with clear attacking plans. Club players between 1200 and 1800 will find opponents rarely know how to handle an early Nb5 or a g4 thrust.

Against stronger, well-prepared opposition, know that 3...e5!? and precise ...c5 play can equalize — so don't expect an opening advantage out of a book. Expect a position where you understand the plans and your opponent is guessing.

Takeaway: The Jobava London is the ultimate practical weapon — low on memorization, high on initiative. Learn the Bf4–e5 clamp, the queenside-castling pawn storm, and the Nb5 poke, and you'll have a system that scores points through understanding rather than memorization. Magnus is using it to win rapid games right now; there's no reason you can't use it in your next online blitz session.