This book series is about that central question: what matters in the opening? What plans are on hand? Which (hidden) concepts are concealed in the current position that has arisen just after the opening? Volume 2 in a new series by Herman Grooten covers Queen’s Gambit Structures.
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While the theory is far from being exhausted and still developing, Grandmaster Milos Pavlovic made a strong case and found new alternatives to battle White’s setups.