private boolean isDiagonallyOccupied(HantoCell from, HantoCell to){
		boolean isOccupied = false;
		if (to.getX() > from.getX()){
			for (int i = from.getX() + 1; i < to.getX(); i++){
				if (findCell(i, -i) == null){
					isOccupied = false;
					break;
				}
			}
		} else {
			for (int i = to.getX() - 1; i < from.getX(); i++){
				if (findCell(i, -i) == null){
					isOccupied = false;
					break;
				}
			}
		}
		return isOccupied;
	}