anchor.diff:  import 'QuattroLinkedList.dart';
   import 'Player.dart';
   import 'Crate.dart';
  +import 'Statistics.dart';
   
   class KistenschiebenModel {
   
  
positive.code:   String playerPositionAsString() {
      return player.getPositionAsString();
    }
    /*
    Creates and returns a list with the positions of all crates for the view
     */
  //  List<String> cratePositions() {
  //    List<String> dummy = new List();
  //    for (int i = 0; i < crates.length; i++) {
  //      dummy.add(crates.elementAt(i).getPositionAsString());
  //    }
  //    return dummy;
  //  }
  
    /*
    returns the position of the player as a string for the view
     */
  
  
  //  createPosString() {
  //    int x = 3;
  //    int y = 4;
  //    String id;
  //    id += "#pos" + x.toString() + "_" + y.toString();
  //  }
  
  
    reset(level, m, n) {
      loadLvl(level, m, n);
    }
  
    loadStatistics() {
  
    }
  
    saveStatistics() {
  
    }
  
    printErrorMessage() {
  
negative.code:   }
  
    show(m, n) {
      print("PlayerPosition: " + player.getPosition());
      print("CratePosition: " + crate.getPosition());
      qlList.printField(m, n);
  