# Learn Recursion by Solving the Tower of Hanoi Puzzle - Step 31. I'm stock I help

### Tell us what’s happening:

Describe your issue in detail here.

NUMBER_OF_DISKS = 3
number_of_moves = 2**NUMBER_OF_DISKS - 1
rods = {
'A': list(range(NUMBER_OF_DISKS, 0, -1)),
'B': [],
'C': []
}

# User Editable Region

def make_allowed_move(rod1, rod2):
forward = False
if not rods[target]:
forward = True
elif rods[rod1] and rods[rod1][-1] < rods[target][-1]:
forward = True
if forward:
print(f'Moving disk {rods[rod1][-1]} from {rod1} to {rod2}')
rods[target].append(rods[ro1].pop())
else:
print(f'Moving disk {rods[target][-1]} from {target} to {rod2}')
rods[rod2].append(rods[target].pop())

# display our progress
print(rods)

# User Editable Region

def move(n, source, auxiliary, target):
# display starting configuration
print(rods)
for i in range(number_of_moves):
remainder = (i + 1) % 3
if remainder == 1:
print(f'Move {i + 1} allowed between {source} and {target}')
elif remainder == 2:
print(f'Move {i + 1} allowed between {source} and {auxiliary}')
elif remainder == 0:
print(f'Move {i + 1} allowed between {auxiliary} and {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 31

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1 Like

I need help with it please

Don’t change the given code, just move it as the instructions say. For example, you changed the posted line above from the code line in this challenge:

else:
print(f'Moving disk {rods[target][-1]} from {target} to {source}')
rods[source].append(rods[target].pop())

‘source’ vs ‘rod’ etc.

Reset the step.
Select the required code lines, cut them (Ctrl + X), and paste them instead of the ‘pass’ in the make_allowed_move function. Pay attention to the indentation.

1 Like