Tic-Tac-Toe-ception

If they still have to go to the same board, there's a simple gambit described in a previous article that gives first player a big advantage. Open with the center square in the center board. Second player must play center board. You play the center square in the next board you're sent to. Continue, forcing the second player to play in the center board until it's completely filled and you have a marker in every surrounding board.

Using this gambit I managed to win against the variant posted by gjsriv.

It originally used what it calls Rule 5a, as the article proposed, but that allows the first player to always win (see Perfect), so it now uses Rule 5b by default, but it can be toggled easily.

There are also a ton of other config options if you scroll down past the initial comments; most of the variants, like the Perfect one, just have different defaults for linking convenience.

https://play.google.com/store/apps/details?id=com.MoongLabs....