From d285d8087e0a9c5866b9665715be49913a7c4d63 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sat, 30 Sep 2017 14:04:08 -0700
Subject: [PATCH] Do not play moves if a winner exists already

---
 tictactoe.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tictactoe.py b/tictactoe.py
index 08ba506..db29436 100644
--- a/tictactoe.py
+++ b/tictactoe.py
@@ -37,7 +37,7 @@ class Board:
     @property
     def is_o_turn(self):
         x_ahead_one = (self.num_x == self.num_o + 1)
-        return x_ahead_one and not self.full
+        return x_ahead_one and not self.full and self.winner is None
 
     @property
     def next_player(self):