About Tic Tac Toe
Tic Tac Toe is humanity's gateway strategy game — three in a row wins. Our version pits you against a minimax-based CPU that plays perfectly, which makes every draw you force a genuine achievement.
How to Play Tic Tac Toe
- 1You play X and always move first; tap any empty cell.
- 2The CPU replies as O, calculating the optimal response.
- 3Make three in a row horizontally, vertically or diagonally to win.
- 4A full board with no line is a draw.
Tips & Strategy
- ◆Open in a corner — it creates the most winning branches against imperfect play.
- ◆If the CPU takes the centre, respond in a corner, never an edge.
- ◆Build a "fork" (two winning threats at once) — it is the only way to beat a strong opponent.
- ◆Blocking is not enough; count the CPU's threats every turn before making your own.
Frequently Asked Questions
Can the CPU be beaten?
The CPU plays the mathematically optimal move every turn, so the best achievable result is a draw — which is exactly what perfect play produces on both sides.
Why does the score count wins?
Your score tracks victories across rounds in a session, so any win (if you ever find a CPU slip) is preserved.
What is a fork?
A position where you threaten two lines simultaneously — your opponent can only block one, guaranteeing your win next turn.