Computer wins. Better luck next time.
X | | X ---+---+--- O | O | O ---+---+--- X | X | O
Moves: X8 O5 X7 O9 X1 O4 X3 O6
New game | Computer goes first | Undo
Play the recursive version ↻
No JavaScript. Every square is a link. Works in curl, lynx, or a browser.