private int sortIslandToMoveIn(final Island o1, final Island o2) {
   if ((o1.getPlayer() == -1) && (o2.getPlayer() == -1)) {
     if ((o1.getAllPositions().size() > 1) && (o2.getAllPositions().size() > 1))
       return -((Integer) o1.getAllPositions().size()).compareTo(o2.getAllPositions().size());
     else {
       if (o1.getAllPositions().size() > 1) return -1;
       if (o2.getAllPositions().size() > 1) return 1;
     }
   } else {
     if (o1.getPlayer() == -1) return -1;
     if (o2.getPlayer() == -1) return 1;
   }
   return 0;
 }