The ultra-sharp pawn sacrifice 6.d5 has caused a revolution in the 4... Ba6 line of the Queen's Indian Defence in recent years. The ingenious gambit was hotly debated at the highest level by players like Alexey Shirov, for White, and Peter Leko, for Black. At club level it became a dangerous weapon for attackers.The deep and often spectacular variations are illuminated by instructive and entertaining prose. A Cutting-Edge Gambit against the Queen's Indian aims to provide a repertoire for the white player, but anyone who plays the line with black is also well advised to study this work carefully! It presents countless brilliant resources and eye-catching novelties.