Chessboard

# Write your solution here
def solve(size):
    i = 0
    while i < size:
        if i % 2 == 0:
            row = "10" * size
        else:
            row = "01" * size
        print(row[0:size])
        i += 1


# Testing the function
if __name__ == "__main__":
    solve(6)