diff --git a/rengobot.py b/rengobot.py
index 37bc5a1..65ba377 100644
--- a/rengobot.py
+++ b/rengobot.py
@@ -1,14 +1,14 @@
-import os
 import ast
+import asyncio
+import os
 import time
 from datetime import datetime, timedelta
-import asyncio
-
-import sgfengine
 
 import discord
 from discord.ext import commands, tasks
 
+import sgfengine
+
 # import requests
 # import raw_input
 
@@ -121,6 +121,10 @@ async def play(ctx, arg):
             await ctx.send("No two consecutive moves by the same player!")
             return
 
+        if len(state[i][2])>1 and state[i][2][-2] == user.id and (state[i][1]!="teachers" or colour=="0"):
+            await ctx.send("No two consecutive same-color moves by the same player!")
+            return
+
         for j in range(len(state[i][2])):
             if (state[i][2][j] == user.id and
                 datetime.now() - datetime.strptime(state[i][3][j],format) < min_time_player):
@@ -552,4 +556,4 @@ async def background_task():
 #     bot.run(token)
 
 # background_task.start()
-# bot.run(token)
\ No newline at end of file
+# bot.run(token)