Jack and Jill are playing a Mystery Game. They are trying to get four tiles of the same color in a row, column, or diagonal. Four in a row wins the game.

1. List the coordinates of the points that they have already played, as shown at right.

   Hint (a):

   Remember that an ordered pair is (x, y).

2. Give two more points, one to Jack and one to Jill, so that either one might win.