Tic Tac Toe
Challenge the AI through 5 increasingly complex stages!
Stage 1/5
3×3 Grid
How to Play
- Complete each stage by winning a game against the AI
- Each stage increases the grid size, making the game more challenging
- Win a game to unlock the next stage
- You play as
(X) and the AI plays as 
(O)
About this Tic Tac Toe
This is not single-board tic-tac-toe — it's five escalating stages, starting on a standard 3×3 grid and growing by one row and column each stage you clear, up to 7×7 in stage five. The win condition stays capped at five in a row regardless of board size, so a bigger grid means more space to maneuver but the same target to reach.
The AI opponent does not run a full game-tree search like the site's checkers bot; it uses a simpler rule: take a winning move if one exists, otherwise block your winning move, otherwise play randomly among the empty cells. That keeps it beatable with a clear strategy — three-in-a-rows must be threatened from two directions at once to slip through.
On even-numbered stages the bot takes the first move as 'O', which changes the opening on every other stage. Progress and the win/loss tally reset if you refresh, since nothing is saved to a server — it's a self-contained, single-session challenge.