Queen's Gambit Declined - exchange - Saemisch variation
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Nf3 Nbd7 6. Bf4
White advances the queen's pawn to d4. Black pushes the queen's pawn to d5. White pushes the c-pawn to c4.
Black moves the king's pawn to e6. White develops the knight to c3. Black develops the knight to f6.
White captures on d5 with the c-pawn. Black captures on d5 with the king's pawn. White moves the knight to f3.
Black moves the knight to d7. White develops the dark-squared bishop to f4.