Most experts agree that the Classical Variation is the critical test of the King's Indian. Pulling no punches, White questions Black's entire strategy and seeks nothing less than a direct refutation; it could be said that the reputation of the King's Indian rests entirely on the assessments of this hotly debated subject.In this book, Krzysztof Panczyk and Jacek Ilczuk uncover the secrets behind this contentious opening and share their discoveries with the reader. They study both the fashionable main lines and the tricky sidelines, and provide a thorough grounding in the key tactical and positional ideas for both sides.