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

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 O-O

Queen's Gambit Declined

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Blackburne Variation

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Black castles. White has no alternative to 6. e3

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