The work sets out the history of the development of methods for resolving contradictions developed by the founder of the theory of solving inventive problems - TRIZ G. S. Altshuller. Receptions are a section of the TRIZ information fund. In the work, an analysis of all modifications of techniques known to the author was carried out. These materials can be useful to TRIZ teachers and developers, and used both to study the history of TRIZ and to develop the theory itself.