from turtle import *
from random import randint
t1 = Turtle()
turX = randint(-200,200)
turY = randint(-200,200)
def differenz(x,y):
    difX = x - turX
    difY = y - turY
    if difX < 0:
        difX * (-1)
    if difY < 0:
        difY * (-1)
    if difY <= 10 and difX <= 10:
        return True

while True:
    t1.goto(turX,turY)
    hit = onclick(differenz)
    if hit:
        turX = randint(-200,200)
        turY = randint(-200,200)