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How can one determine if a piece is weak or strong? Or if a square is weak or strong? These are the principal questions that grandmaster and trainer Drazen Marovic addresses in this important book. By discussing carefully chosen games and positions, Marovic explains how to recognize good and bad features of positions, and how to make use of one's advantages and exploit the opponent's weaknesses. One repeatedly sees 'weaknesses' that are unexploitable (and therefore are not weaknesses at all), possibilities of surrendering certain squares in order to gain more important ones, and material sacrifices to exploit major weaknesses. Topics include: outposts; strength and weakness on files and diagonals; vulnerabilities on the first and second ranks; static weakness and attack; and characteristics of the pieces.