diff --git a/src/util.py b/src/util.py
--- a/src/util.py
+++ b/src/util.py
@@ -1,3 +1,4 @@
+import random
 import multiprocessing
 import logging as log
 
@@ -34,3 +35,19 @@ class MsgQueue:
 
 	def setHandler(self,handler):
 		self._handleEvent=handler
+
+
+rand=random.Random()
+rand.seed(361)
+zobristNums=tuple(
+	tuple(
+		tuple(rand.getrandbits(32) for i in range(3)) for c in range(19)
+	) for r in range(19)
+)
+
+def hashBoard(board):
+	res=0
+	for (r,row) in enumerate(board):
+		for (c,item) in enumerate(row):
+			res^=zobristNums[r][c][item+1]
+	return res