# Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 39

### Tell us what’s happening:

hello, what am i making a mistake on here? could someone please guide me on what to do?

``````NUMBER_OF_DISKS = 4
number_of_moves = 2**NUMBER_OF_DISKS - 1
rods = {
'A': list(range(NUMBER_OF_DISKS, 0, -1)),
'B': [],
'C': []
}

def make_allowed_move(rod1, rod2):
forward = False
if not rods[rod2]:
forward = True
elif rods[rod1] and rods[rod1][-1] < rods[rod2][-1]:
forward = True
if forward:
print(f'Moving disk {rods[rod1][-1]} from {rod1} to {rod2}')
rods[rod2].append(rods[rod1].pop())
else:
print(f'Moving disk {rods[rod2][-1]} from {rod2} to {rod1}')
rods[rod1].append(rods[rod2].pop())

# display our progress
print(rods, '\n')

def move(n, source, auxiliary, target):
# display starting configuration
print(rods, '\n')
for i in range(number_of_moves):
remainder = (i + 1) % 3

# User Editable Region

if remainder == 1:
if n % 2 != 0:
print(f'Move {i + 1} allowed between {source} and {target}')
make_allowed_move(source, target)
else n % 2 != 1:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
make_allowed_move(source, auxiliary)

# User Editable Region

elif remainder == 2:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
make_allowed_move(source, auxiliary)
elif remainder == 0:
print(f'Move {i + 1} allowed between {auxiliary} and {target}')
make_allowed_move(auxiliary, target)

# initiate call from source A to target C with auxiliary B
move(NUMBER_OF_DISKS, 'A', 'B', 'C')
``````

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### Challenge Information:

Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 39

`else` doesn’t want a condition

The instructions are asking to turn the function call into a comment.

alright, ive changed it to

else:
print(f’Move {i + 1} allowed between {source} and {auxiliary}')
# make_allowed_move(source, auxiliary)

and it still does not pass

Do you have an error or hint? Check the console as well, sometimes there is a useful message there.

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