Dao is played on a 4×4 board with the following setup:
On your turn you one of your as far as possible in any direction (including diagonals). The only limitation is that it isn't allowed to shut an opponent into a corner.
Win by:
occupycorners: occupy each of the 4 corners
madeblock:
Arrange your pieces in a 2x2 square
madeline: Arrange
your pieces on an orthogonal line