About the Queen's Gambit Accepted course
Take the c4 pawn, hold it if you can, and free your game with ...c5 or ...e5 in time. The classical way to punish a careless gambit.
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.