Queen's Gambit Declined semi-Slav - Bogolyubov variation
1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. Bd3 Be7
White advances the queen's pawn to d4. Black moves the queen's pawn to d5. White advances 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 moves the knight to f3. Black advances the c-pawn to c6. White moves the king's pawn to e3.
Black moves the knight to d7. White develops the light-squared bishop to d3. Black develops the dark-squared bishop to e7.