Chess Opening Theory/1. d4/1...Nf6/2. Bf4/2...e6/3. e3/3...d5/4. Nd2/4...c5

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< Chess Opening Theory‎ | 1. d4‎ | 1...Nf6‎ | 2. Bf4‎ | 2...e6‎ | 3. e3‎ | 3...d5‎ | 4. Nd2
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London System Main Line with Black ...e6 and ...c5

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London System Main Line with Black ...e6 and ...c5
a b c d e f g h
8 a8 b8 c8 d8 e8 f8 g8 h8 8
7 a7 b7 c7 d7 e7 f7 g7 h7 7
6 a6 b6 c6 d6 e6 f6 g6 h6 6
5 a5 b5 c5 d5 e5 f5 g5 h5 5
4 a4 b4 c4 d4 e4 f4 g4 h4 4
3 a3 b3 c3 d3 e3 f3 g3 h3 3
2 a2 b2 c2 d2 e2 f2 g2 h2 2
1 a1 b1 c1 d1 e1 f1 g1 h1 1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

rnbqkbnr/pp3ppp/4pn2/2pp4/3P1B2/4P3/PPPN1PPP/R2QKBNR w

Moves: 1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nd2 c5

After 1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nd2 c5, Black opts for a setup reminiscent of the Queen's Gambit Declined (QGD). This approach aims for a solid yet flexible structure, central and queenside counterplay, and harmonious development of pieces:

  1. Solid Central Pawn Structure: With ...e6 and ...d5, Black sets up a strong pawn chain in the center, often making it difficult for White to easily break through.
  2. Challenging White's Center: The move ...c5 directly targets White's central d4 pawn. This pawn break aims to destabilize White's pawn center and create counterplay on the queenside.
  3. Development and King Safety: Black can continue with natural developing moves such as ...Nc6 and ...Bd6, exchanging off White's active dark-squared bishop if possible. Following up with ...O-O ensures the king's safety.
  4. Activating the Light-Squared Bishop: One of Black's challenges in the QGD setup is the passive light-squared bishop on c8. Black can consider plans such as ...b6 and ...Ba6, or even a timely ...e5 pawn break, to free this bishop.
  5. Queenside Counterplay: Using the semi-open c-file, Black can look to increase pressure on the queenside. Rooks can be quickly deployed to the c-file, and pieces like the knight on b8 can be developed to c6, supporting the ...c5 break and increasing pressure on d4.
  6. Central Breaks: Depending on White's setup, Black can consider the ...e5 break in the center, especially if the opportunity arises where the d4 pawn can be targeted.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5

5
Main Line with Black ...e6 and ...c5 c3 =

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References

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Bibliography

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Wikipedia has related information at London System

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