FREE · CALCULATORS & CONVERTERS
Tic-Tac-Toe.
Play against an optimal computer or a second person on the same device.
X to play
X wins: 0 · O wins: 0 · Draws: 0
Computer uses exhaustive minimax: optimal play leads to a draw. Two-player mode shares this device; no online rooms or accounts. Scores remain in this page session.
How to use Tic-Tac-Toe
Start the tool with its controls. Recording permissions are requested only after your click; all generated files stay in this page.
How it works
Play against an optimal computer or a second person on the same device. Local play only. Exhaustive minimax computer opponent, selectable first player, winning-line highlight and session scores. No online rooms. No source input is sent to an editing service.
Example
Use the displayed controls and inspect the result.
Questions about Tic-Tac-Toe
Is Tic-Tac-Toe free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Local play only. Exhaustive minimax computer opponent, selectable first player, winning-line highlight and session scores. No online rooms. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.