TRIZ is like a toolbox to help people solve difficult problems. Imagine that you have a complicated puzzle to solve. TRIZ gives you tools to help you find the right pieces and put them together to solve the puzzle. It's like having a friend who helps you solve difficult problems by giving you ideas and tips.
TRIZ is a theoretical framework on which come to operate tools that should be chosen according to the specificities of the inventive problem to be treated. Among the TRIZ tools, we can cite the nine-screen method which makes it possible to analyze the evolution of the technical object along two axes or the TRIZ Matrix known for its simplicity and efficiency in resolving contradictions. The analysis of contradictions is one of the best known approaches.