Are you talking to yourself, lol? You would need to have two enemies seperated without vision. Plus, a grid type system of triggers. It might be fun if the map was created right. You could make 2 grids on each side of the board and if you deploy a siege tank (one turn), it destroys what is at the opposite square on the other side of the board. For boats you could use spider mines (permanently placed). I might try making this map if I can think of some more ideas.