diff -r ef5f62bf5987 -r 9a04eb6a2291 testing3/knight_test1.scala
--- a/testing3/knight_test1.scala	Tue Oct 29 23:56:13 2019 +0000
+++ b/testing3/knight_test1.scala	Wed Oct 30 11:28:44 2019 +0000
@@ -1,3 +1,4 @@
+import CW8a._
 
 assert(is_legal(8, Nil, (3, 4)) == true)
 assert(is_legal(8, List((4, 1), (1, 0)), (4, 1)) == false)