Hello, welcome to the third book of the series. In the first two series, I covered topics such as beginner systems, intermediate systems, calculation methods, applications, and various tips about the game. I think that the players who have come so far have come to a certain level and system knowledge in the systems. Therefore, the systems described here are more practical as an application and calculation method than those described before.
Please refer to the first book in the series to learn how to use the system and how the applications can do it. You can find all the levels of the series in a single book "Level 1-2-3".