Just a few words
To be clear about the way we kill units.
a)First, you must have your king in front of the target unit (horizontally or vertically).
b)Second, one of your own units must have stopped his movement facing the same target unit but not on the same column or row then your king.
Playing the king
a)You must open a road for your King. Your King need an empty field to start his hunting.
b)When space is available, never put 2 units on the same row or column.If the other king take position between these units, you will lost one of them at the next turn. (Remneb)