This chess program presents many instructive positions with 18 most important strategic themes such as Advantage in development, Advantage in space, Attack on the king, Attack on the queenside, Weak squares, Pawn structure, Open files and diagonals and others. This course is in the series Chess King Learn (https://learn.chessking.com/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middlegame, and endgame, split by levels fro