The starting player is chosen at random and may select any numbered tile along the vertical column containing the marker tile □.
The tile selected is then removed and replaced by the marker tile. The tile that previously contained the marker tile is replaced with a □ to indicate that that the tile has already been selected.
The second player now selects any numbered tile from the horizontal row in which the marker tile □ now appears. The selected tile is then changed to a □ and the old marker tile is replaced with a □. See next page for example.
Play continues like this until all the tiles are selected or until one player can no longer make a move in their row or column. The player with the most points is delcared the winner.