Explore the fundamentals of the Grunfeld Defence in this comprehensive video lecture by Grandmaster Markus Ragger, Austria's top-ranked player. Delve into the strategic principles, key variations, and historical context of this dynamic chess opening. Learn why the Grunfeld is favored by top players, analyze critical lines including the main line and the aggressive 3.h4 variation, and discover how to approach studying this complex opening. Examine traps, conceptual ideas, and practical advice for incorporating the Grunfeld into your repertoire. Benefit from Ragger's expert insights on challenging lines, rich tactical possibilities, and the opening's evolution, including the Neo-Grunfeld. Conclude with guidance on how to start playing the Grunfeld and a glimpse into GM Ragger's future plans.