Question 1

Can you beat an unbeatable Tic Tac Toe AI?

Accepted Answer

No. A Tic Tac Toe AI using the minimax algorithm with perfect play cannot be beaten — the best a human can achieve against it is a draw. Tic Tac Toe is a solved game: with optimal play from both sides, every game ends in a draw.

Question 2

What is the best Tic Tac Toe strategy to never lose?

Accepted Answer

Always take the center if it is open, take a corner if the center is taken, and always block your opponent's two-in-a-row before making your own move. Watch for forks -- positions where your opponent could create two winning threats at once -- and block them early.

Question 3

Is this Tic Tac Toe game free to play?

Accepted Answer

Yes, this Tic Tac Toe game is completely free to play in your browser, with no download, installation, or sign-up required.

Question 4

Can I play Tic Tac Toe against a friend on the same device?

Accepted Answer

Yes, the 2 Players mode lets two people play locally by taking turns on the same screen, with optional best-of-3, best-of-5, or best-of-7 match play.

Question 5

What is the origin of the name Tic Tac Toe?

Accepted Answer

Tic Tac Toe is believed to descend from an ancient Roman game called Terni Lapilli and a similar Egyptian game. The modern name and 3x3 grid format became popular in the 20th century, and the game is also known as Noughts and Crosses in British English.

Match winner!

TIC TAC TOE