Ask the robot what the other would say, if you were to ask it which door led to freedom. Then go through the opposite door it tells you.

(Even if you don't know which is which)

The truth telling robot would tell you how the lying robot would answer. If the T Robot told you the other robot would say to take the left door, you would automatically take the opposite door you were told, since you are assuming the other robot is the lying one.

The lying robot would tell you how the truth telling robot would answer. If the L Robot told you the other robot would say to take the right door, you would automatically take the opposite door you were told, since you are assuming that the robot you are talking to is lying.

So, either way, whether you are talking to the truthful robot or the lying robot, you take the opposite door --that the robot you are talking to--says the other will tell you is the door to freedom.


I know, difficult to understand. LOL