diff -r dd036093fc09 -r cac4ae0f22f4 caumat.py
--- a/caumat.py	Thu Dec 30 15:19:36 2010 +0100
+++ b/caumat.py	Thu Dec 30 15:56:07 2010 +0100
@@ -62,7 +62,10 @@
 	def grow(self, grid, (x, y)):
 		n1 = [(x-1, y), (x, y+1), (x+1, y), (x, y-1)]
 		n2 = [(x+1, y+1), (x+1, y-1), (x-1, y-1), (x-1, y+1)]
-		neighbours = random.choice((n1, n1, n1, n1, n1, n1, n2, n2, n2))
+		c0 = (n1, )
+		c1 = (n1, n2)
+		c2 = (n1, n1, n2)
+		neighbours = random.choice(random.choice((c0, c1, c2)))
 		neighbours = [n for n in neighbours if n not in grid.cells]
 		if len(neighbours):
 			pos = random.choice(neighbours)