interface ILabyrinth
{

   // create a labyrinth of size 100*100 max.  Rabbit and carrot are positioned at random locations within the maze.
   void Init();

   // try to move the rabbit in one direction.  return true if the move was successful, returns false otherwise (there was a wall)
   bool tryMove(Direction d);

   // return true if carrot and rabbit are at the same place.
   bool isSuccess();