The authors offer White's complete aggressive repertoire after 1.d4 d5 2.c4. In this Volume 1, the Chigorin system (1.d4 d5 2.c4 Nc6), the Albin Countergambit (1.d4 d5 2.c4 e5), the Baltic Systems (1.d4 d5 2.c4 Bf5), and the Mamedyarov System (variant 1.d4 d5 2.c4 c5. 3.cxd5) are discussed. Most space is devoted to the Queen's Gambit Accepted 1.d4 d5 2.c4 dxc4 3.e4 c5 4.d5 and 3.e4 b5 4.a4. Black's other responses in the QGA after 1.d4 d5 2.c4 dxc4 3.e4, such as 3..Nf6, 3..Nc6 and 3..e5 are discussed on 480 pages in Volume 1B. Further information about the book and a sample are available at thinkerspublishing.com.