# Write a NumPy program to create a 8x8 matrix and fill it with a checkerboard pattern.  
import numpy as np
x = np.ones((3,3))
print("Checkerboard pattern:")
x = np.zeros((8,8),dtype=int)
x[1::2,::2] = 1
x[::2,1::2] = 1
print(x)
