Your move. You are O, pick a square.
X | O | X ---+---+--- 4 | X | 6 ---+---+--- O | X | O
Moves: X5 O2 X1 O9 X3 O7 X8
New game | Computer goes first | Undo
Play the recursive version ↻
No JavaScript. Every square is a link. Works in curl, lynx, or a browser.