Tic-Tac-Toe
Single player. You are
X
. The computer plays
O
automatically after your move.
Your turn (X)
↻ New Game
Hard mode (unbeatable)
Controls: Click / tap a cell. Computer moves automatically.
How the computer thinks
Hard mode
uses
minimax
(unbeatable).
Default mode uses a
smart heuristic
(center > corner > block wins, random otherwise).