code: def distance(self, piecex, piecey):
          '''Return the distance of chess piece X and Y (Chebyshev Distance)'''
          return max(abs(piecex[0] - piecey[0]), abs(piecex[1], piecey[1])f distance(self, piecex, piecey):
          '''Return the distance of chess piece X and Y (Chebyshev Distance)'''
          return max(abs(piecex[0] - piecey[0]), abs(piecex[1], piecey[1]))
docs: Return the distance of chess piece X and Y (Chebyshev Distance)