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Chess Opening Theory/1. d4/1...d5/2. c4/2...e6/3. Nf3/3...Nf6

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Queen's Gambit Declined
a b c d e f g h
8a8 black rookb8 black knightc8 black bishopd8 black queene8 black kingf8 black bishopg8 black kingh8 black rook8
7a7 black pawnb7 black pawnc7 black pawnd7 black kinge7 black kingf7 black pawng7 black pawnh7 black pawn7
6a6 black kingb6 black kingc6 black kingd6 black kinge6 black pawnf6 black knightg6 black kingh6 black king6
5a5 black kingb5 black kingc5 black kingd5 black pawne5 black kingf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 white pawnd4 white pawne4 black kingf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 black kingd2 black kinge2 white pawnf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 white kingf1 white bishopg1 black kingh1 white rook1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

rnbqkb1r/ppp2ppp/4pn2/3p4/2PP4/5N2/PP2PPPP/RNBQKB1R w

Moves: 1. d4 d5 2. c4 e6 3. Nf3 Nf6

Queen's Gambit Declined

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3...Nf6

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Here white can take an interesting departure from the typical QGD lines by playing 4. g3, transposing into a main line of the Catalan Opening. This colorful opening can be very aggressive, especially if black opens the long diagonal with ...dxc4 at some point. The piece play white obtains from such an opening of lines is often dangerous for black.

At this point, white's other main continuations are 4. Nc3 and 4. Bg5, though 4. cxd5 is certainly possible.

Theory table

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

1. d4 d5 2. c4 e6 3. Nf3 Nf6




4.
Queen's Gambit Declined, Orthodox Defence Nc3
...		 =
Catalan Opening g3
...		 =
Bg5
...		 =
cxd5
...		 =

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Wikipedia has related information at Queen's Gambit Declined

References

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