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Chess Opening Theory/1. d4/1...d5/2. c4/2...e6/3. Nc3/3...Nf6/4. Nf3/4...Be7/5. Bf4

Queen's Gambit Declined
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Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4
ECO code: D37
Synonym(s): Harrwitz Attack

5. Bf4 · Blackburne Variation

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White develops her bishop to f4. This just looks like a standard developing move, but it is extremely aggressive. With the bishop on f4 instead of g5, White avoids piece exchanges. She often castles queenside while Black castles kingside, leading to sharp opposite-side castling positions.

Black has nothing better to do than castle.

Theory table

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1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4

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References

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See also

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v · t · e
Chess Opening Theory
1. e4 e5
Open game
2. Nf3
With 2...Nc6:
  • Four knights ( )
  • Italian game ( )
  • Spanish game ( )

With other 2nd moves:

2. Other
1. e4 c5
Sicilian defence
1. e4 ...other: