Rules: Your move's position within a small board sends your opponent to the same-position board on the big grid.
Win three small boards in a row to win. If sent to a finished board, you may play anywhere (unless No free turns is on — then you must play in that board).
Amber border = board(s) you must play in this turn.
Amber ! = playing here sends your opponent to a board where they can win it.
Green ★ = playing here sends your opponent to a finished board, giving them a free move.