Chess Opening Theory/1. e4/1...e5/2. Nf3/2...d6/3. d4/3...Nd7/4. Bc4/4...exd4/5. Nxd4/5...Be7/6. Bxf7

6.Bxf7+!!
This move is a crushing sacrifice. Black loses his queen whether he accepts it or declines it.