Tic Tac Toe – How to Win

Tic Tac Toe

Tic Tac Toe is a timeless game that has entertained generations. You can learn how to win tic tac toe in this article and play it on our free tic tac toe game.

Simple yet captivating, it is a great way to sharpen your strategic thinking. Whether you’re a beginner or looking to master the game, this guide will walk you through everything you need to know about Tic Tac Toe, including how to play, its fascinating history, and optimal playing strategies.

How to Play Tic Tac Toe

Tic Tac Toe is a two-player game where one player is ‘X’ and the other is ‘O’. The game board consists of a 3×3 grid. Players take turns placing their marks (X or O) in an empty cell. The objective is to be the first to get three of your marks in a row, column, or diagonal. Here’s a step-by-step guide:

  1. Start the Game: Decide who will be ‘X’ and who will be ‘O’. ‘X’ typically goes first.
  2. Make Your Move: Click on an empty cell to place your mark.
  3. Alternate Turns: Players take turns placing their marks in empty cells.
  4. Win or Draw: The game ends when a player gets three marks in a row (horizontally, vertically, or diagonally) or when all cells are filled without a winner, resulting in a draw.
  5. Restart: Click the “Restart” button to start a new game.

The game can also be played against an AI with two modes: beatable and unbeatable. The beatable AI makes random moves, while the unbeatable AI uses the minimax algorithm to ensure it never loses.

History of Tic Tac Toe

Tic Tac Toe, also known as Noughts and Crosses or Xs and Os, has a rich history that dates back to ancient times. The earliest known version of the game was played in ancient Egypt around 1300 BC. It was known as “Terni Lapilli” and played on a simple grid scratched into the ground or on stone.

The modern version of Tic Tac Toe evolved from a game called “Three Men’s Morris,” played in medieval England. It gained popularity in the United States in the 19th century, and the name “Tic Tac Toe” was coined in the early 20th century. Today, it remains one of the most popular and easily recognizable games in the world.

How to Win Tic Tac Toe

Optimal Playing Strategy: The Minimax Algorithm

If you want to master Tic Tac Toe, understanding the optimal playing strategy is essential. The unbeatable AI in our game uses the minimax algorithm, a decision-making algorithm used in game theory to find the optimal move for a player assuming that the opponent also plays optimally.

Minimax Algorithm Explained

The minimax algorithm works by evaluating all possible moves and their outcomes, assigning a score to each move based on whether it leads to a win, loss, or draw. Here’s a simplified version of how it works:

  1. Generate All Possible Moves: The algorithm generates all possible moves for the current player.
  2. Simulate Each Move: For each possible move, it simulates the move and then switches to the opponent’s turn.
  3. Evaluate Outcomes: It recursively evaluates all possible moves until it reaches a terminal state (win, loss, or draw).
  4. Assign Scores: It assigns scores to the terminal states: +10 for a win, -10 for a loss, and 0 for a draw.
  5. Choose Optimal Move: The algorithm chooses the move that maximizes the player’s score while minimizing the opponent’s score.

In essence, the minimax algorithm ensures that the AI makes the best possible move at every step, leading to an unbeatable strategy.

Basic Strategies for Human Players

While the minimax algorithm is perfect for AI, human players can also use basic strategies to improve their game:

  1. Start in a Corner: If you’re playing first, starting in a corner increases your chances of winning.
  2. Block Opponent’s Moves: Always look out for your opponent’s potential winning moves and block them.
  3. Create Two-Way Wins: Try to create opportunities where you have two ways to win on your next move, making it impossible for your opponent to block both.

Fun Variations of Tic Tac Toe

  1. 3D Tic Tac Toe: Played on a 3x3x3 grid, adding an extra layer of complexity.
  2. Ultimate Tic Tac Toe: Each cell in a 3×3 grid contains another 3×3 grid. Players must win the small grids to claim the larger one.
  3. Gomoku: Also known as Five in a Row, this game is played on a larger board and requires five marks in a row to win.


Tic Tac Toe is more than just a simple game; it’s a fascinating blend of strategy, history, and fun. Whether you’re playing casually or aiming to master the unbeatable AI, understanding the game’s strategies and history adds depth to this timeless classic. Try out our game, challenge yourself against the AI, and see if you can outsmart it!






Leave a Reply

Your email address will not be published. Required fields are marked *