Truth or Lie
A thief is caught and is sentenced to death... He is given a chance to try and escape... He has to choose one of the three doors, two of which contain deadly poison and one the path to freedom... he knows this... Only two doors have gatekeepers... Now either one gatekeeper can lie or both speak the truth but both cannot lie simultaneously... The first gatekeeper states that the second gatekeeper is a liar and that his gate holds death... The second gatekeeper states that the first speaks the truth but his gate holds death... Which door should the thief choose, if he knows the above data?