Chess Middlegame I v0.9.7 Mod APK Unlocked  course composed by GM Alexander Kalinin is aimed at teaching a student much of the middlegame methods and intricacies through a theoretical section.
Typical Plans and Methods in the Most Popular Openings: Scotch, Ruy Lopez, Sicilian, Caro-Kann, F... http://www.fullapkmod.com/chess-middlegame-i-v0-9-7-mod-apk-unlocked.html