English - Bremen - Smyslov system
1. c4 e5 2. Nc3 Nf6 3. g3 Bb4
White plays the c-pawn to c4. Black plays the king's pawn to e5. White develops the knight to c3.
Black develops the knight to f6. White advances the g-pawn to g3. Black develops the dark-squared bishop to b4.