The Chess Middlegame II course by GM Alexander Kalinin offers an in-depth exploration of middlegame strategies and tactics across various popular chess openings. This course is part of the comprehensive Chess King Learn series, designed to elevate your chess skills from beginner to professional levels. It covers essential openings like the Sicilian Defense (including Dragon, Najdorf, and Paulsen variations), Ruy Lopez (Open and Exchanged variations), King's Gambit, Italian Game, Evans Gambit, Pirc-Ufimtsev, Alekhine's Defense, Nimzo-Indian Defense, Queen's Indian Defense, Queen's Gambit, and Modern Benoni.

The program serves as an interactive coach, providing tasks and guiding you through solutions with hints, explanations, and refutations for common mistakes. It features a theoretical section that not only offers textual lessons but also allows you to make moves on a virtual board to practice and understand the concepts better.

Key features of the program include high-quality, double-checked examples, the necessity to enter all key moves as instructed, varying levels of task complexity, different goals to achieve within the problems, and the ability to play out any position against the computer. Additionally, the course offers interactive lessons, a structured table of contents, and tracks your ELO rating progress.

The application supports a test mode with customizable settings, bookmarking of favorite exercises, and is optimized for larger tablet screens. It does not require an internet connection and can be linked to a free Chess King account, allowing you to access your course across multiple devices on Android, iOS, and the web.

The free part of the course includes fully functional lessons that let you experience the program's capabilities before committing to further topics. These free lessons cover a range of openings and variations, giving you a comprehensive preview of what the full course offers.

In the latest version 3.3.2, updated on July 29, 2024, new features include a training mode based on Spaced Repetition, the ability to launch tests on bookmarks, a daily goal for puzzles to maintain your skills, and a daily streak tracker. Alongside these, various fixes and improvements have been implemented to enhance the learning experience.

By engaging with this course, you can enhance your chess knowledge, master new tactical tricks and combinations, and apply these skills effectively in your games.