# Learn Classes and Objects by Building a Sudoku Solver - Step 18

### Tell us what’s happening:

I am confused on what the question is asking me to do especially with the `║` character can someone explain to me what it is?

``````class Board:
def __init__(self, board):
self.board = board

def __str__(self):
upper_lines = f'\n╔═══{"╤═══"*2}{"╦═══"}{"╤═══"*2}{"╦═══"}{"╤═══"*2}╗\n'
middle_lines = f'╟───{"┼───"*2}{"╫───"}{"┼───"*2}{"╫───"}{"┼───"*2}╢\n'
lower_lines = f'╚═══{"╧═══"*2}{"╩═══"}{"╧═══"*2}{"╩═══"}{"╧═══"*2}╝\n'
board_string = upper_lines
for index, line in enumerate(self.board):
row_list = []

for square_no, part in enumerate([line[:3], line[3:6], line[6:]], start=1):
row_square = '|'.join(str(item) for item in part)
row_list.extend(row_square)

# User Editable Region

if square_no != 3:
║.append(row.list║)

# User Editable Region

``````

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0`

### Challenge Information:

Learn Classes and Objects by Building a Sudoku Solver - Step 18

the `║` symbol needs to be in a string, having quotes first and after, also you need to have `row.list` first and append something to it, `row.list.append()`

Oh ok I got it now thanks ilenia for the help

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