diff --git a/src/tests/testGo.py b/src/tests/testGo.py
--- a/src/tests/testGo.py
+++ b/src/tests/testGo.py
@@ -1,6 +1,6 @@
 from unittest import TestCase
 
-from go.core import isLegalPosition
+from go.core import isLegalPosition, Go
 
 
 class TestLegal(TestCase):
@@ -23,3 +23,25 @@ class TestLegal(TestCase):
 			[0,0,0,0,0]
 		]
 		self.assertFalse(isLegalPosition(board))
+
+
+class TestMove(TestCase):
+	def testCapture(self):
+		g=Go(3)
+		g.load([
+			[0,1,0],
+			[1,-1,0],
+			[0,1,0]
+		])
+		g.toMove=1
+		g.doMove(1,1,2)
+		self.assertEqual(g.board,[
+			[0,1,0],
+			[1,0,1],
+			[0,1,0]
+		])
+
+		g._helper.clear()
+		for row in g._helper._board:
+			for x in row:
+				self.assertEqual(x,0)