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

< Chess Opening Theory‎ | 1. d4‎ | 1...d5‎ | 2. c4‎ | 2...e6‎ | 3. Nc3‎ | 3...Nf6‎ | 4. Bg5
Queen's Gambit Declined
 a b c d e f g h 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)
Moves: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7
ECO code: D51
Parent: Queen's Gambit Declined

# Queen's Gambit Declined

## 4...Nbd7

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

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+
-+