Chess Opening Theory/1. d4/1...d5/2. c4/2...e6/3. Nc3/3...Nf6/4. Bg5/4...Nbd7

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Queen's Gambit Declined
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)

r1bqkb1r/pppn1ppp/4pn2/3p2B1/2PP4/2N5/PP2PPPP/R2QKBNR

ECO code: D51
Parent: Queen's Gambit Declined

Queen's Gambit Declined[edit]

4...Nbd7[edit]

With 4...Nbd7, black intends to play the Cambridge Springs Defense, which continues 5. Nf3 c6 6. e3 Qa5. The Cambridge Springs Defense is a solid line of the QGD and is often played both in the amateur level (because of the easier to understand theme) and the grandmaster level. This move also sets a trap that has ensnared quite a few players. White can continue 5. cxd5 exd5, resulting in a position that resembles the QGD Exchange variation (which is fine for both camps), as long as he/she doesn't play 6. Nxd5??. While it superficially appears to win a pawn (because the black knight is pinned), black can capture with his knight with 6... Nxd5!. Then after 7. Bxd8, white has not won black's queen because of 7... Bb4+!, where the only legal move is 8. Qd2, and black gets his/her queen back and emerges a minor piece ahead.

Theory table[edit]

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

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7

5 6 7 8
Cambridge Springs Defense Nf3
c6
e3
Qa5
cxd5
Nxd5
Qd2
Bb4
=
cxd5
exd5
e3
c6
Qc2
h6
Bh4
Be7
=
Elephant Trap ...
...
Nxd5??
Nxd5!
Bxd8
Bb4+
Qd2
Bxd2+
-+

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References[edit]

  • Batsford Chess Openings 2 (1989, 1994). Garry Kasparov, Raymond Keene. ISBN 0-8050-3409-9.