Labros Zabi - Checker Board

import pygame

WHITE = (255, 255, 255)
BLACK = (0, 0, 0)

pygame.init()
PDR = pygame.Rect(0, 0, 600, 600)
PDS = pygame.display.set_mode(PDR.size)
FONT = pygame.font.SysFont("arial", 20)

# create a checker board
checker = pygame.Surface((512, 512))
for pos in range(64):
    pygame.draw.rect(checker, WHITE if (pos + pos // 8 % 2) % 2 else BLACK, (pos % 8 * 64, pos // 8 * 64, 64, 64))
PDS.blit(checker, (44, 44))

# display letters and numbers
for pos in range(8):
    a = FONT.render("ABCDEFGH"[pos], False, WHITE)
    b = FONT.render(str(pos + 1), False, WHITE)
    PDS.blit(a, (-a.get_rect().w // 2 + 76 + pos * 64, -a.get_rect().h // 2 + 578))
    PDS.blit(b, (-a.get_rect().h // 2 + 22, -a.get_rect().w // 2 + 76 + pos * 64))

pygame.display.update()

exit_demo = False
while not exit_demo:
    for e in pygame.event.get():
        if e.type == pygame.KEYUP:
            if e.key == pygame.K_ESCAPE: exit_demo = True