Traps, Tricks & Mistakes: Fool’s Mate
This is the ever shortest checkmate. Teaching it to children makes them very happy. When they understand the concept of ‘opening the kingside’, they try to catch their opponents into it in all their games.
It is an unusual setup that only in beginners’ games can happen. I have never seen it in tournaments. The situation is as crazy as inviting a thief to dinner in your home.