The Queen's Indian Defence is one of the most reliable defenses against 1.d4, and features in the repertoires of many of the world's top grandmasters. Black uses his active pieces to put dynamic pressure on White's center. GM Michael Roiz supplies an elite repertoire built on sound positional principles, offering active piece play and a fight for the initiative. In this companion volume to the author's highly-regarded The Nimzo-Indian Defence, the starting point is 1.d4 Nf6 2.c4 e6. The main focus is on 3.Nf3 b6 while Roiz also covers 3.g3 (Catalan) and miscellaneous options.