/*

  From https://www.themathdoctors.org/pattern-and-sequence-puzzles/
  """
  9, 5, 45, 8, 6, 48, 6, 7, ?
  """

  I would say that ? = 6*7=42 but is there some other pattern?
  The program doesn't find anything...

*/
data(puzzle4_alt,Data,Vars,Unknown,Ops,Constants,MaxSize,Params) :-
  Seq = [9, 5, 45, 8, 6, 48, 6, 7],
  % make_point_seq(Seq,Data,Unknown,Vars), % no solution
  % member(N,1..3),
  make_seq(Seq,2,Data,Unknown,Vars),
  Ops = [+,-,*,/],
  Constants = -10..10,
  MaxSize = 11,
  Params = new_map().

/*
  Another representation, index + expanded.
  But still no solution...
*/
/*
data(puzzle4_alt,Data,Vars,Unknown,Ops,Constants,MaxSize,Params) :-
  Data = [ [[1, 9,5],45],
           [[2, 5,45],8],
           [[3, 45,8],6],
           [[4, 8, 6],48],
           [[5, 6,48],6],
           [[6, 48,6],7]
         ],
  Vars = ['A','B','C'],
  Unknown = [7,6,7],
  Ops = [+,-,*,/],
  Constants = -10..10,
  MaxSize = 11,
  Params = new_map().
*/