Ultimate Tic-Tac-Toe

**Setup:** Draw 3x3 grid where each cell contains a smaller 3x3 grid.

**Gameplay:**

1. X goes first, playing in any small cell
2. Where you play sends opponent to the corresponding big cell

(Play in top-right of a small grid → opponent plays in top-right big cell)

1. Win a small grid to claim that big cell
2. If sent to an already-won grid, play anywhere

**Winning:** Win 3 big cells in a row (like regular tic-tac-toe).

**Strategy:** Much deeper than regular tic-tac-toe. Control which board opponent plays in.