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     1 // Part 1 about finding and counting Knight's tours  | 
     1 // Part 1 about finding and counting Knight's tours  | 
     2 //==================================================  | 
     2 //==================================================  | 
     3   | 
     3   | 
     4 object CW8a {   // for preparing the jar | 
     4 object CW9a {   // for preparing the jar | 
     5   | 
     5   | 
     6 type Pos = (Int, Int)    // a position on a chessboard   | 
     6 type Pos = (Int, Int)    // a position on a chessboard   | 
     7 type Path = List[Pos]    // a path...a list of positions  | 
     7 type Path = List[Pos]    // a path...a list of positions  | 
     8   | 
     8   | 
     9   | 
     9   |