  A magic SET square is a 3 by 3 table of SET cards such that each row, column,
diagonal, and anti-diagonal is a set. We allow the following transformations of
the square: shuffling features, shuffling values within the features, rotations
and reflections of the square. Under these transformations, there are 21 types
of magic SET squares. We calculate the number of squares of each type. In
addition, we discuss a game of SET tic-tac-toe.
