Tic-tac-toe

Your move. You are X, pick a square.

 O | X | 3 
---+---+---
 4 | O | 6 
---+---+---
 O | X | X 

Moves: X9 O5 X2 O1 X8 O7

Play the recursive version ↻

No JavaScript. Every square is a link. Works in curl, lynx, or a browser.