The two doors
The two doors
The following is an adaptation of one of the most famous riddles, the riddle inspired by " knights and squires , " which was popular in the mid-twentieth century. Can be found in many forums, books of riddles and in the film Labyrinth ( "Labyrinth", 1986) , where the great David Bowie played the role of Jareth, the king of the goblins , who from here manuf you tribute.
" You are a prisoner in a cell where there are two doors guarded by two guards in front of each of them. One door leads you into a labyrinth from which you can never leave, while the other leads you to freedom . You know one of the guards always tells the truth and the other always lies , but you do not know who is who. Your captor Jareth, the king of the goblins, gives you the opportunity to cross one of the doors after making one question to one of the guards. What question would you do to find out what is the door that will lead you to freedom ?.
SOLUTION:
If we asked one of the guards "What answer me the other guard if I ask what is the door that leads me to freedom", we will know which is the door that we want to cross, which is the opposite of that tells us, since:
- If we were asking the guard who always tells the truth, it would indicate a door that would actually be the door that leads to the maze with no exit, which is the door to tell his companion that always lies.
- If we were asking the guard who always lies, also you tell us a door that would be the door that leads to the labyrinth without exit, since we say the opposite of what he would say his partner, who would tell us what is the door It leads to freedom.
