CareerCup

call isValidMove for all the below positions
(x-2,y-1);(x-1,y-2);(x-2,y+1);(x-1,y+2);(x+2,y-1);(x+1,y-2);(x+2,y+1);(x+1,y+2)
bool isValidMove(x,y){
  if(x>=0&&x<=7&&y>=0&&y<=7)
     return true
}
//assuming the coordinate system is between [0,7][0,7]

Maybe you should also validate whether there is a piece(his own or opposite) at that position. If so, reture false.

if knight is securing king i.e knight is in between king and opponents power then you cant move knight... if you move the knight then king will be under check mate, so that move is invalid...