Computer wins. Better luck next time.
O | O | O ---+---+--- O | X | X ---+---+--- X | | X
Moves: X5 O1 X6 O4 X7 O3 X9 O2
New game | Computer goes first | Undo
Play the recursive version ↻
No JavaScript. Every square is a link. Works in curl, lynx, or a browser.