Talk:832: Tic-Tac-Toe

This is all wrong. The second move for X, unless O blocked it already, or started off in the centre should be the lower right corner. That way, O will use the centre to block, and then X goes in a third corner, thus sealing the game.76.29.225.28 04:59, 23 July 2013 (UTC)

Can you tell which situation you mean? If X starts at 7 and O does not go to 5, then X forces a win with the described tactic. There might be other ways to win, but I don't think that matters. --Chtz (talk) 09:11, 23 July 2013 (UTC)

Playing as X, you start in the upper left corner. O plays in any square other than the lower right corner (They might be able to block if they play the centre, depending on whether they anticipate this move). Then, when O blocks the centre, you play the upper right or lower left corner, depending on where O has played before, thus making it impossible to block because they only get one move. The only time this ever fails is when O knows what X is doing after the first move.76.29.225.28 19:57, 23 July 2013 (UTC)

If it goes X7, O5, X3, then O must play anywhere but in a corner next (result is symmetric) X has to block and O can hold a draw. Just see the Map for O part. --Chtz (talk) 21:40, 23 July 2013 (UTC)

There is an error in the drawing when starting with (numpad coordinates) X7, O9, X1, O4, X3: Both O5 and O6 have the same picture. --Chtz (talk) 09:11, 23 July 2013 (UTC)