About the English Opening course
1.c4 fights for d5 before committing a single centre pawn. You choose the battlefield after seeing Black's setup — symmetric, reversed Sicilian, or something stranger.
Lines are ordered from the shortest sideline to the deepest main line, straight from real master play — no frequency guesswork, no “secret tricks”, just the moves that are actually on the board when the position matters. Your progress is stored on this device.