Queens Gambit Declined Middlegame (1.d4 d5 2.c4 e5 / 1.d4 d5 2.c4 e6 / 1.d4 d5 2.c4 c5) Chess Puzzles

“Queens gambit declined middlegame” is not a universally standardized variation name, but usually means the middlegame arising after 1.d4 d5 2.c4 e6. Its defining feature is Black’s refusal of the c4-pawn, creating a solid d5–e6 center and strategic tension around the c-file and central breaks.