Queen's Gambit Declined
We will be looking at the Queen's Gambit Declined from Black's point of view.
It arises after the following moves:
| 1.d4 d5 2.c4 e6 |  |
| 3.Nc3
Nf6 4.Bg5 Nbd7
Note: White cannot win a pawn with 5.cxd5 exd5 6.Nxd5 |
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| 5.e3 c6 6.Nf3 Qa5 This is the Cambridge Springs Variation. |  |
White has to be careful as the bishop on g5 is under hidden attack from the Black Queen. The natural developing move Be3 is a mistake.
| 7.Bd3 Ne4 8.Nd2 Nxd2 9.Qxd2 dxc4 and White loses a piece as the two bishops are both under attack! | 
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| or White could try: | |
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8.Bf4 Nxc3 9.bxc3 Qxc3+ 10.Kf1 dxc4
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8.Bxe4 dxe4 9.Ne5 Bb4 |
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| but Black still gains an advantage. | |
White now has three reasonable seventh moves:
A. 7.Nd2
B. 7.Bxf6
C. 7.cxd5
