Another one:

Two countries are divided by a bottomless chasm. There is a single bridge spanning the chasm. It takes 5 minutes to cross the bridge. There is a guard hut in the centre of the bridge. The guard comes out every 3 minutes to ensure that no one crosses the bridge illegally. Your country is under evil-dictatorship rule and they're out to get you.

  • You cannot legally cross the bridge.
  • You cannot hide from the guard.
  • The guard is armed and a trained athelete. You're not.
  • All other neighbouring countries are under evil-dictatorship rule as well.

How do you escape to the other country and freedom?