Two good tic-tac-toe players started a game, but the wind blew away their paper just after the second play. Given that the situation was as follows, who was to play next, O or X?

       |   |
    ---+---+---
     O |   |
    ---+---+---
     X |   |

If X had played the opposite corner, what would you say?

(In reply to Puzzle Thoughts by K Sengupta)

Ah, the solution is: O is to play next, since O went first. X going first is nonsensical in that it would mean O made a losing move. 

Posted by Steven Lord on 2023-06-18 16:49:15