In Dangerous Weapons 1. e4 e5 they recommend the Center Game. It looks playable & obscure & avoids the Petrov & long dragged out theoretical stuff.
1. e4 e5 2. d4 exd4 3. Qxd4
Center Game over the King's Gambit, Vienna, Four Knights, etc.?!
Yeah, it is "dangerous weapons" all right, but white is in danger!
"Puzzle" fail! It said Qg8 was wrong.