Queen's Gambit Declined - Semi-Tarrasch - Primitive Pillsbury variation
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c5 5. Nf3 cxd4 6. Qxd4
White advances the queen's pawn to d4. Black advances the queen's pawn to d5. White moves the c-pawn to c4.
Black advances the king's pawn to e6. White develops the knight to c3. Black develops the knight to f6.
White develops the dark-squared bishop to g5. Black moves the c-pawn to c5. White moves the knight to f3.
Black captures on d4 with the c-pawn. White captures with the queen on d4.