Gruenfeld - Russian - Prins variation
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Na6
White advances the queen's pawn to d4. Black develops the knight to f6. White moves the c-pawn to c4.
Black plays the g-pawn to g6. White develops the knight to c3. Black moves the queen's pawn to d5.
White moves the knight to f3. Black develops the dark-squared bishop to g7. White moves the queen to b3.
Black captures on c4 with the queen's pawn. White captures with the queen on c4. Black castles kingside.
White plays the king's pawn to e4. Black moves the knight to a6.