code: def valid_solution_set(board):
      valid = set(range(1, 10))
  
      for row in board:
          if set(row) != valid:
              return False
  
      for col in [[row[i] for row in board] for i in range(9)]:
          if set(col) != valid:
              return False
  
      for x in range(3):
          for y in range(3):
              if (
                  set(
                      sum(
                          [
                              row[x * 3 : (x + 1) * 3]
                              for row in board[y * 3 : (y + 1) * 3]
                          ],
                          [],
                      )
                  )
                  != valid
              ):
                  return False
  
      return True
  
label_desc: Use image node_id 3 for calling a global function with example usage: valid_solution_set(board) and returns: True, False, False, False