This course presents Solutions and Review of the FIRST LEGO League 2021 RePlay competition and it uses LEGO MIndstorms Robot Inventor as a base. It is a mirror course to the LEGO Education SPIKE course for the same competition. For each mission in the competition the course contains the rules for the mission, a tutorial how to accomplish it, instructions for the robot that is used and instructions for the attachment that is used. Every lesson also contains a Scratch and a Python program for accomplishing the mission and of course a 10 out of 10 tutorial that demonstrated how reliable the approach is. Upon completion of the course you will have many new ideas about how to approach mission on every FLL robotics competition and how to help your team score more points.