Tic-Tac-Toe (Noughts and Crosses) is probably one of the most famous games. Let's see how to build a game where the computer can play against the user. This is a minor variant of the Tic-Tac-Toe recipe given in the easyAI library.

Create a new Python file and import the following packages:

from easyAI import TwoPlayersGame, AI_Player, Negamax 
from easyAI.Player import Human_Player 

Define a class that contains all the methods to play the game. Start by defining the players and who starts the game:

class GameController(TwoPlayersGame): 
    def __init__(self, players): 
        # Define the players 
        self.players = players 
 
        # Define who starts the game 
        self.nplayer = 1  

We will be using a 3x3 board numbered from one to nine row-wise:

        # Define the board 
        self.board = [0] * 9 

Define a method to compute all the possible moves:

    # Define possible moves 
  ...