You cannot guarantee a win every time if both players play perfectly
If you go first, take the center square
If the center is taken, take a corner
If you go second and the center is open, take the center
Always block any immediate winning move by your opponent
Create two threats at once whenever possible
Take the opposite corner if your opponent takes a corner
Prefer corners over edges
Force your opponent into defensive moves
Avoid giving your opponent a fork
Set up forks when you can
If your opponent starts in a corner, take the center
If your opponent starts in the center, take a corner
If your opponent starts on an edge, take the center
Play to control the middle and corners
Watch for rows, columns, and diagonals that can be completed in one move
Choose moves that keep multiple winning paths open
Do not waste moves on edges unless necessary
Learn the standard opening and response patterns
Recognize when a draw is the best possible result
Practice common endgame positions to avoid mistakes