
from turtle import *
speed(0)
pensize(5)
def 棋盘():
for i in range(1,3):
pu()
goto(0,i*50)
pd()
seth(0)
fd(150)
pu()
goto(i*50,0)
pd()
seth(90)
fd(150)
棋盘()
def O(x,y):
x=x-x%50+25
y=y-y%50+25
pu()
goto(x,y)
pd()
dot(40,'black')
dot(34,'white')
def X(x,y):
x=x-x%50+25
y=y-y%50+25
pu()
goto(x,y)
pd()
seth(45)
for i in range(4):
fd(20)
fd(-20)
left(90)
def mid(x,y):
clear()
棋盘()
onscreenclick(O)
onscreenclick(X,3)
onscreenclick(mid,2)
done()


