diff -r fbff6f601370 -r be818c5a67d4 main_templates4-old/knight3.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main_templates4-old/knight3.scala	Sat Nov 04 18:53:37 2023 +0000
@@ -0,0 +1,24 @@
+// Finding a single tour on a "mega" board
+//=========================================
+
+object M4c {
+
+// !!! Copy any function you need from file knight1.scala !!!
+// !!! or knight2.scala                                   !!! 
+//
+// If you need any auxiliary function, feel free to 
+// implement it, but do not make any changes to the
+// templates below.
+
+
+type Pos = (Int, Int)    // a position on a chessboard 
+type Path = List[Pos]    // a path...a list of positions
+
+// ADD YOUR CODE BELOW
+//======================
+
+
+//(9) 
+def tour_on_mega_board(dim: Int, path: Path) : Option[Path] = ???
+
+}