Queen's Gambit Declined: Cambridge Springs Defense

What Is The Cambridge Springs Defense?

The queen sortie 6...Qa5 punishes White for sending the dark-squared bishop to g5: the queenside is underdefended, so Black hits the knight on c3 and prepares ...Ne4 and ...Bb4 to stack pressure on that square. Natural development invites trouble, most famously 7.Bd3? dxc4 8.Bxc4 Ne4, hitting g5 and the pinned knight on c3. White's real tries are 7.Nd2 and 7.cxd5.

As Black you play ...Bb4, ...dxc4 and ...Ne4 in some order, converting the c3 pressure into the bishop pair or a clean pawn, then trade queens into a comfortable endgame. White fights back with the centre and tempo gains against the queen after 7.Nd2. Games are often decided by concrete tactics before move fifteen, so memorize the critical lines rather than trusting general principles.

How Do You Play Against The Queen's Gambit Declined: Cambridge Springs Defense?

31% take on f6, 19% take on d5 and 18% retreat with 6.Nd2, on a small sample. Black has developed the queen to a5 to pin the knight on c3 and hit the bishop on g5 at the same time, which is a genuine double attack rather than a bluff.

The Cambridge Springs punishes automatic play, so the one thing you cannot do here is continue developing as though nothing happened. 6.Nd2 unpins and defends, 6.cxd5 changes the structure before the pressure builds, and 6.Bxf6 removes one attacker. All three are respectable. Playing a routine move and losing the c3 knight to a tactic is the standard way this variation claims its victims.

How Does Play Continue From Here?

Move	Share		Games
Bxf6	31%		28
cxd5	19%		17
Nd2	18%		16
Bd3	8%		7