Grandmasters Kotronias and Ivanov are renowned as leading theoreticians and chess trainers. They offer a unique and world-class repertoire based on 1.d4! They advocate an ambitious approach for White, with the aim to fight for an advantage in any position. This is their first joint effort; they tackle the ever-popular Queen’s Gambit Accepted and their sidelines in Volume 1A and 1B. We at Thinkers believe their job could not have been done any better.