ECO D52 · Queen's Gambit Declined
Queen's Gambit Declined: Cambridge Springs Defense
The position after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 Nbd7 6.e3 Qa5.
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Qa5
Queen's Gambit Declined: Cambridge Springs Defense is filed under ECO D52, a variation of Queen's Gambit Declined. It is the position after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 Nbd7 6.e3 Qa5 — 12 half-moves in, with White to move. From here theory names one continuation, Bxf6.