Danish gambit - Collijn defence
1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 cxb2 5. Bxb2 Qe7
White pushes the king's pawn to e4. Black moves the king's pawn to e5. White moves the queen's pawn to d4.
Black captures on d4 with the king's pawn. White advances the c-pawn to c3. Black captures on c3 with the queen's pawn.
White develops the light-squared bishop to c4. Black captures on b2 with the c-pawn. White captures with the dark-squared bishop on b2.
Black deploys the queen to e7.