Tomorrow is a big event at my university. I’d like to make a fun thing where the people of the Board Game society I am in can try to find me for a riddle, kind of a Where is Waldo in a place where there is a crap tone of people to find the NPC that’ll give them a Riddle (Maybe something to win? No idea how I could do that detail)
The guard replies either four or something else. You now know which of the guards is the liar and who is the truth teller. You used your one question and still have no clue which door leads to hell and which leads to heaven. You have to guess 😕.