English - Torre defensive system
1. c4 c6 2. Nf3 d5 3. b3 Nf6 4. g3 Bg4
White pushes the c-pawn to c4. Black plays the c-pawn to c6. White develops the knight to f3.
Black advances the queen's pawn to d5. White plays the b-pawn to b3. Black develops the knight to f6.
White plays the g-pawn to g3. Black develops the light-squared bishop to g4.