Xander and Olivia are playing a three-game tic tac toe match.
Each game is worth one point, which is either earned by the winner or split if a game ends in a draw.
To make the match more interesting, they're playing all three games at once -- that is,
on each turn a player may put his or her initial into any empty box in any of the three gameboards.
Xander goes first. After two turns by each player, the boards look like this:
Where should Xander play next to be sure of winning the match?
Click here for an analysis of the game of Tic Tac Toe
Send your solution by the end of the month to:
David Pleacher