You do not need to know 20 moves of theory. You need a System that works against anything.
Most chess courses are "horizontal"—they teach you a little about openings, a little about tactics, and a little about endgames. The result is a Swiss cheese knowledge base. gm igor smirnov all 9 chess courses new
Your rating increase is not a matter of talent. It is a matter of having the right blueprint. This is the blueprint. You do not need to know 20 moves of theory
However, for the dedicated player (1200-2000 ELO), represents the most coherent, efficient roadmap to advanced chess ever produced. It removes the guesswork. You are not learning "tips and tricks." You are learning how a Grandmother thinks about time, space, force, and psychology. The result is a Swiss cheese knowledge base
Buy the system. Study the 9 pillars. And watch your opponents stare at the board wondering why, all of a sudden, you are playing like a Grandmaster. Visit the official Remote Chess Academy (by GM Igor Smirnov) and look for the "All 9 New Courses Bundle." Download the first module (Course 1: Positional Understanding) tonight, and play your first training game tomorrow.