Queen's Gambit Declined Slav - Wiesbaden variation
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6
White advances the queen's pawn to d4. Black plays the queen's pawn to d5. White plays the c-pawn to c4.
Black moves the c-pawn to c6. White develops the knight to f3. Black develops the knight to f6.
White jumps the knight to c3. Black captures on c4 with the queen's pawn. White pushes the a-pawn to a4.
Black develops the light-squared bishop to f5. White moves the knight to e5. Black advances the king's pawn to e6.