London System
ECO: D02For whitesystemd4solid
Overview
A solid, system-based approach for White. The setup is similar against most Black replies: pawns on d4 and e3, bishop to f4, knight to f3.
Key Ideas
- Build the same solid setup against almost any Black reply.
- Plant the dark-squared bishop on f4 outside the pawn chain.
- Look for c3 and Bd3 to support a central break.
- Maneuver the queenside knight via d2 to f1 or b3.
Main Lines
Line 1
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1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. c3 Qb6
Line 2
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1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 O-O 5. h3 d6
Line 3
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1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Bg3 O-O
Pros & Cons
Pros
- Low theory burden
- Same setup against most replies
- Solid pawn structure
Cons
- Less ambitious than mainline d4
- Black can equalize easily with good play
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Related Openings
- Italian Game(C50)
- Ruy Lopez(C60)
- Queen's Gambit(D06)
- English Opening(A10)