This course presents a Black repertoire in the Queen's Gambit Accepted built around the early central break ...c5!, beginning with 1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6. The repertoire replaces the older ...Nc6 system with sharper, concrete play featuring new moves in critical positions, including the exchange sacrifice sequence 15...Bxh2+! against 6.Nc3.