Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...Nd4/4. Nxe5/4...Qg5/5. Nxf7/5...Qxg2

5...Qxg2!
Qxg2 is the accurate followup and the dream of Blackburne Shilling Gambit players. White has to give away a major piece to stop checkmate.