Easy: relaxed moves with basic blocking.

Medium: takes centre and blocks threats.

Hard: optimal minimax-style play.

VS CPU plays X against computer O.

TWO PLAYER lets two people share one screen.

FULL SCREEN opens a larger board-only play view.

1. X starts first.

2. Take turns placing marks in empty squares.

3. Three in a row wins.

Mouse/touch: tap any empty square.

Keyboard: 1 bottom-left, 9 top-right.

Undo: removes your last turn.

Compact board keeps the whole game in frame.

Fullscreen is best for laptops, phones and tablets.

Use browser zoom 100% for safest fit.

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Users want a fast game with no install.

They expect CPU play and local 2-player mode.

This layout keeps board and controls visible.

Classroom warm-up, quick break or family game.

Simple strategy practice for forks and blocks.

Mobile-friendly noughts and crosses.

Centre: usually the strongest opening square.

Corners: create more fork chances.

Block: stop immediate wins first.

Easy is relaxed for casual play.

Medium blocks threats and prefers strong squares.

Hard aims for optimal Tic Tac Toe decisions.

Page 1 uses a reduced game screen inside the same frame.

Controls are dense, readable and always in frame.

Help text is split across internal pages.

Recommended folder: tic-tac-toe

Canonical: https://teletext-tools.com/tic-tac-toe/

Title highlights CPU and 2-player mode.