Below is the feedback and provisional marks for your submission
for assignment 8 Part 1.  Please note all marks are provisional until
ratified by the assessment board -- this is not an official
results transcript.

knight1.scala does not contain vars, returns, Arrays, ListBuffers etc?
  --> success
knight1.scala runs?
  --> success 
 is_legal(8, Nil, (3, 4)) == true 
 is_legal(8, List((4, 1), (1, 0)), (4, 1)) == false 
 is_legal(2, Nil, (0, 0)) == true
  --> test failed
 legal_moves(8, Nil, (2,2)) == List((3,4), (4,3), (4,1), (3,0), (1,0), (0,1), (0,3), (1,4))
 legal_moves(8, Nil, (7,7)) == List((6,5), (5,6))
 legal_moves(8, List((4,1), (1,0)), (2,2)) == List((3,4), (4,3), (3,0), (0,1), (0,3), (1,4))
 legal_moves(8, List((6,6)), (7,7)) == List((6,5), (5,6))
 legal_moves(1, Nil, (0,0)) == Nil
 legal_moves(2, Nil, (0,0)) == Nil
 legal_moves(3, Nil, (0,0)) == List((1,2), (2,1))
  --> test failed
 all_tours from every position on the board
 dim = 1: 1
       2: 0,0,0,0
       3: 0,0,0,0,0,0,0,0,0
       4: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
       5: 304,0,56,0,304,0,56,0,56,0,56,0,64,0,56,0,56,0,56,0,304,0,56,0,304
  --> test failed
 enum_tours(5, List((0,2)) ) => 56 tours? and all correct?
  --> test failed
 val f = (x:(Int, Int)) => if (x._1 > 3) Some(List(x)) else None 
   first(List((1,0),(2,0),(3,0),(4,0)), f) == Some(List((4,0)))
   first(List((1,0),(2,0),(3,0)), f) == None
  --> test failed
 is first_tour(8, List((0, 0))) ok? 
 is first_tour(4, List((0, 0))) == None 
  --> test failed
Overall mark for Part 1
0