A king attacks the eight squares touching it. In this drill the board shows a white pawn and a few black kings. Tap every black king that could take the pawn right now, and the next board appears.
Get five boards in a row right to earn a silver star, and ten in a row for gold. A wrong tap shows you the answer and starts your count again. Change the level to add more kings and more look-alikes.
Tip: a king two squares away cannot reach you, however close it looks. Only the squares right next to the pawn count.