This classic game show would hide a sports car behind one of three (3) doors - 1, 2, or 3. Behind the other two doors were goats (sometimes called zonks). If you select the door with the car you get to keep it! (The host knows where the car is.)
But there's a trick! (because of course there is)
After the contestant locks in their choice, the host, Monty Hall, would reveal (open) one of the other doors with a goat. Then the contestant was asked if they wanted to stick with their original choice or switch their selection to the other door. After which the prize (or goat) was revealed.
You are going to code this game - Solo or in pairs.