"The Puzzle of Granular Computing" is a specialized book that addresses the fundamental aspects of information granularity, inference tools, and problem-solving methods. The aim of the book is to unify these topics within a coherent and operational framework. The authors provide readers with a comprehensive and unified introduction to the subject by isolating central problems and methods of Computational Intelligence and discussing their implementation as well as the underlying logic within a structured conceptual framework. The book promotes a deep understanding of key issues to integrate the multitude of approaches in the literature and practical application into a meaningful whole. The monographic approach includes a series of steps that offer solid conceptual foundations, present a carefully selected collection of design methodologies, and illustrate these with relevant, illustrative materials.