In a standard 3x3 Tic-Tac-Toe board, there is a strategy to win if the opponent makes a mistake. As far as I know, the strategy goes like:
- Capture the centers
- Capture the edges
- Capture a square which can lead to multiple immediate wins
- Be careful of immediate threats
I'm looking for a common strategy which works for all NxN board variants. Is there one?
The variant has the same rules as the standard one. All squares in a diagonal, row, or column occupied by a player is a win. And of course, if there isn't any moves to make, it's a tie.