Plan

I want to have an Ai that guards a bridge and gives the player a riddle/ word puzzle.  There will be a few different objects in the room and the player must use the riddle to find the correct one to give the troll. If the player gets the correct item they can cross the bridge, if they get the wrong item the troll will throw the item at the player damaging them. If the player gets three wrong items they will have to restart.  I want the correct object to be randomized at the start of each game so the riddle will have to match the object. I would like the area with the different items to be like the scene in Indiana Jones where the holy grail is hidden among a few different Items.  I want the puzzle to be difficult so that when the player finally passes the puzzle they have a huge feeling of accomplishment. People like to solve Puzzles and like to challenge themself, it's fun because it makes the player think.