diff --git a/src/go.py b/src/go.py
--- a/src/go.py
+++ b/src/go.py
@@ -6,7 +6,7 @@
 	## Initializes self.board to a list[r][c]=Go.EMPTY.
 	def __init__(self,boardSize=19):
 		self.boardSize=boardSize
-		self.board=[[Go.EMPTY]*self.boardSize for x in self.board]
+		self.board=[[Go.EMPTY]*self.boardSize for x in range(boardSize)]
 
 	## Executes a move.
 	#