Queens Gambit Accepted Middlegame (1.d4 d5 2.c4 dxc4 / 1.d4 d5 2.c4 dxc4 3.Nf3) Chess Puzzles

The queens gambit accepted middlegame begins after 1.d4 d5 2.c4 dxc4, when Black accepts White's gambit pawn and both sides transition beyond the opening. “Middlegame” is not a precisely standardized sibling variation, so its exact move order is not widely documented; the defining feature is Black's temporary extra c4-pawn and White's plan to recover it while building central activity.