diff --git a/src/util.py b/src/util.py
--- a/src/util.py
+++ b/src/util.py
@@ -2,6 +2,13 @@ import multiprocessing
 import logging as log
 
 
+EMPTY=0
+BLACK=1
+WHITE=-1
+
+colorNames={BLACK:"B",WHITE:"W"}
+
+
 class MsgQueue:
 	def __init__(self,handler=None):
 		self._queue=multiprocessing.Queue()