How the King Moves:-

The kings are the large pieces topped with crosses. At the beginning of the game, the kings are here:

Kings can move one square at a time in any direction:

Kings can also carry out a special manoever called castling.

Kings can't move when they are blocked by their own pieces. In fact kings spend most of their time hemmed in with little mobility. In the image below, the king can only move to one square:

The king can capture just like any other piece. Here the king is going to take the rook, after which the rook will be removed from the board and the king will sit on the square with the "x":

Note that the two kings are not allowed to sit on adjacent squares. Neither king can move to the squares marked with red X's: