Nine boards of nine cells each. Take a line of cells to win the board. Win a line of boards to win the game. Simple, right?

But remember the Golden Rule: your opponent must be sent to a different board.

In most cases, your choice affects both you and your opponent:
take the top-left cell and you send your opponent to the top-left board.

A cell can be a 'teleporter', because sending your opponent wouldn't work. Take one and you can choose which board to send them to. Don't waste it!

Some boards could be won by your opponent right away - be mindful if you take a cell that sends them there! You can disable 'Show danger' if you'd like.

Which boards does your opponent want to take? Can you tell what their strategy is and give them temptations that actually help you?

Don't forget to think ahead a few turns. If only two boards remain, the Golden Rule locks you both there. Can you lock your opponent into a loss?