Queen's Gambit Declined semi-Slav - Stoltz variation
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. Qc2
White moves the queen's pawn to d4. Black pushes the queen's pawn to d5. White plays the c-pawn to c4.
Black pushes the king's pawn to e6. White develops the knight to c3. Black develops the knight to f6.
White moves the knight to f3. Black moves the c-pawn to c6. White advances the king's pawn to e3.
Black transfers the knight to d7. White deploys the queen to c2.