Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...Bc5/5. Nxe5/5...Qh4

5...Qh4!
5...Qh4! aims to create counterplay instead of losing a pawn to a fork
 * 6...0-0 - Main Line
 * 6...Nd3 - Vienna Line