Evans gambit - Mayet defence
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bf8
White advances the king's pawn to e4. Black moves the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White develops the light-squared bishop to c4. Black develops the dark-squared bishop to c5.
White moves the b-pawn to b4. Black captures with the dark-squared bishop on b4. White plays the c-pawn to c3.
Black deploys the dark-squared bishop to f8.