diff -r 80102fba0a93 -r 0ab369f53ac1 marking3/knight1_test3b.scala
--- a/marking3/knight1_test3b.scala	Sun Dec 09 01:36:49 2018 +0000
+++ b/marking3/knight1_test3b.scala	Mon Dec 10 02:23:30 2018 +0000
@@ -1,11 +1,6 @@
 
-type Pos = (Int, Int)    // a position on a chessboard 
-type Path = List[Pos]    // a path...a list of positions
-
-def count_all_tours_urban(dim: Int) = {
-  for (i <- (0 until dim).toList; 
-       j <- (0 until dim).toList) yield count_tours(dim, List((i, j)))
-}
+//type Pos = (Int, Int)    // a position on a chessboard 
+//type Path = List[Pos]    // a path...a list of positions
 
 def add_pair_urban(x: Pos)(y: Pos): Pos = 
   (x._1 + y._1, x._2 + y._2)