Getting Error as "TicTacToe` isn't a 3x3 board" for the challenge

Create a new Board subclass named TicTacToe. Have it automatically be a 3x3 board by automatically setting values in the init.

I have tried in two ways below, but both didn’t work out got  TicTacToe` isn't a 3x3 board,

Please check my below code and please suggest me what I have done wrong?

You can check challenge at this link -> https://teamtreehouse.com/library/objectoriented-python-2/dice-roller/boards

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Default code given is:

class Board: def init(self, width, height): self.width = width self.height = height self.cells = [] for y in range(self.height): for x in range(self.width): self.cells.append((x, y, z))

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My code:

class Board: def init(self, width, height): self.width = width self.height = height self.cells = [] for y in range(self.height): for x in range(self.width): self.cells.append((x, y))

class TicTacToe(Board): def init(self, width=1, length=1, height=1): super().init(width=width, height=height) self.length = length self.cells = [] for z in range(self.length): for y in range(self.height): for x in range(self.width): self.cells.append((x, y, z))

class Board:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.cells = []
        for y in range(self.height):
            for x in range(self.width):
                self.cells.append((x, y))


class TicTacToe(Board):
    def __init__(self, width=1, length=1, height=1):
        super().__init__(width=width, height=height)
        self.length = length
        self.cells = []
        for z in range(self.length):
            for y in range(self.height):
                for x in range(self.width):
                    self.cells.append((x, y, z))