Sicilian - Kan variation
1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6
White moves the king's pawn to e4. Black advances the c-pawn to c5. White develops the knight to f3.
Black plays the king's pawn to e6. White pushes the queen's pawn to d4. Black captures on d4 with the c-pawn.
White captures with the knight on d4. Black pushes the a-pawn to a6.