English - symmetrical - Benoni formation
1. c4 c5 2. Nf3 Nf6 3. d4
White pushes the c-pawn to c4. Black moves the c-pawn to c5. White develops the knight to f3.
Black develops the knight to f6. White advances the queen's pawn to d4.
White pushes the c-pawn to c4. Black moves the c-pawn to c5. White develops the knight to f3.
Black develops the knight to f6. White advances the queen's pawn to d4.