definitiu.py

print("  A B C D E F G H")
for fila in range(8):
    print(8-fila,end=" ")
    for columna in range(8):
        if columna%2 == fila%2:
            print("\u25a1",end=" ")
        else:
            print("\u25a0",end=" ")
    print(8-fila)
print("  A B C D E F G H")