Abstract: The subject of this research is the theoretical and practical bases for overcoming obstruction of criminal investigations, criminal phenomenon of obstruction of justice, elements of obstruction, as well as measures for discovering criminal obstruction. The work is aimed at determining the characteristic and innate elements of obstruction of justice, research of the stages, determination of types, tactics and means of this counteraction for putting forth criminalistics versions and investigative planning using the means and methods of overcoming obstruction of investigations. The research methodology of the general scientific methods, including sensory-rational scientific methods (observation, description, comparison, experiment and simulation), logical methods (analysis, synthesis, induction, deduction, analogy, hypothesis and abstraction), mathematical methods (measurement, calculation, geometric construction); methods of criminalistics (forensic identification, fingerprinting, odorology, planning of investigative actions, organization of investigation); and special methods of other sciences, which include physical, chemical and physical-chemical methods, anthropological and anthropometric methods, sociological and psychological methods. The scientific novelty of this research is defined by the aspect of inquiry into criminal phenomenon of obstruction of justice, overcoming the obstruction, formation of criminalistics doctrine on overcoming obstruction of justice, emergence and establishment of criminalistics doctrine for overcoming obstruction of justice, as well as formation and completion of criminalistics doctrine in its final form as a holistic system of theoretical positions and practical recommendations.

Abstract: The subject of this research is the analysis of implementation of the norms of criminal law in the process of formation of doctrine on overcoming obstruction of investigation of crimes. Literary and theoretical provisions on the matter are reviewed. Emphasis is made on the historical aspects of the formation of stages of forensic doctrine on overcoming obstruction of investigation of crimes as its integral system, assemblage of interrelated ideas of interpretation the development patterns of private forensic theories and doctrines. In the course of research, the author applied the following methods: general scientific, logical, mathematical, special methods of forensics – forensic identification, dactyloscopy, odorology, investigative procedure planning, organization of investigation. The special methods of other sciences include physical, chemical, physicochemical, anthropological and anthropometric, sociological, psychological. The scientific novelty of this work is defined by the historical aspect of formation of stages of doctrine on overcoming obstruction of investigation of crimes; its emergence and establishment; formation and completion of forensic doctrine as an integral system of theoretical provisions and practical recommendations.

Abstract: The subject of this research is some questions in the history of emergence of the elements of obstruction of criminal investigation, as well as establishment of forensic doctrine of overcoming obstruction of criminal investigation. The article studies the theoretical concept on obstruction of criminal investigation and measures for its overcoming, structure of the doctrine, consideration of separate opinions on division of the structure of doctrine into general and special parts, including the information system. The research is aimed at the historical aspect of development of forensic doctrine on overcoming of obstruction of criminal investigation and its integral system and concept, as a set of interrelated ideas of the comprehension of the essence and patterns of organizational grounds of activity at the high stage of development of forensic science. The scientific novelty is defined by the historical aspects of studying the emergence of elements of obstruction of criminal investigation and establishment of forensic doctrine on the matter; need for formulating the integral doctrine on overcoming obstruction of criminal investigation; possibility to provide the original definition of overcoming obstruction of criminal investigation; formation of the structure and objects of forensic doctrine. 

Abstract: The subject of the research is the mechanism of overcoming the counteraction to the crimes of investigation and mechanism of marking formation, patterns of overcoming the counteraction to the crimes of investigation, their technological and criminalistic support, tactical and criminalistic support, methodological and criminalistic support of activities performed by law enforcement agencies and court. This is the first research to create a criminalistic teaching about overcoming the counteraction to the crimes of investigation and to develop an integral concept of such study as a combination of interrelated ideas and concepts. The methodology of the research includes general research methods (observation, description, comparison, experiment and modelling as sense-based research methods, analysis, synthesis, induction, deduction, analogy, hypothesis and abstraction as logical research methods, measurement, calculation and geometrical construction as mathematical methods). The author has also used special criminalistics methods (criminalistic identification, dactyloscopy, odorology, planning of investigative activities and organisation of investigation) as well as special methods from other branches of science such as physical, chemical and physical-chemical methods, anthropological and anthropometric methods, sociological methods and psychological methods. The scientific novelty of the research is caused by the fact that the author offers a new branch of criminalistics, criminalistic teaching about overcoming the counteraction to the crimes of investigation and development of the integral concept thereof based on rules and patterns of criminal procedure.