The application offers to solve 322 chess puzzles.
After solving each of them, it becomes possible to view the entire chess game from which the position of the puzzle was obtained.
The exercises are divided into 4 parts depending on how black is trying to counter the London System.
In all games of this app, the victory was achieved by the chess players who played with white pieces.
Authors of the idea, selection of chess games and exercises: Irina Baraeva (IRINACHESS.RU), Maxim Kuksov (MAXIMSCHOOL.RU).