Ответ:

import turtle

def draw_square(color, size):

turtle.color(color)

turtle.begin_fill()

for i in range(4):

turtle.forward(size)

turtle.left(90)

turtle.end_fill()

turtle.forward(size)

turtle.speed('fastest')

turtle.penup()

turtle.goto(-200, 200)

colors = ['white', 'black']

size = 50

rows = 8

columns = 8

for row in range(rows):

for column in range(columns):

color = colors[(row + column) % 2]

draw_square(color, size)

turtle.backward(size * columns)

turtle.right(90)

turtle.forward(size)

turtle.left(90)

turtle.exitonclick()