Refinements: part 3 =================== As you should have noticed the program doesn't work. What happens is that Reeborg gets in an infinite loop when there is no wall around him. We need to have him ``move()`` after turning right, as indicated below:: put() move() while not object_here(): if right_is_clear(): turn_right() move() elif front_is_clear(): move() else: turn_left() More complicated world ---------------------- .. topic:: Another world! Now, consider **Around 3**; will our program work? As you probably guessed, unfortunately the answer is no. Try to figure out why before reading any further.