You work in a farm and it is a job that keeps you really busy all the time. However, this Valentine’s Day you have promised to spend more time with your girlfriend and even take her out for a movie. You asked the owner of the farm to grant you the permission to leave early and he did give you the permission. You started working fast to get all the work done before leaving. Finally all your work for the day is completed but then you notice that the exit gate is locked. Yes there is a spare key in the barn but opening the barn is not a simple task. All the best!