The dazzlingly clever and always entertaining Raymond Smullyan takes an unorthodox approach to chess puzzles by treating them as mysteries–with Sherlock Holmes as guide and mentor. The key concept is retrograde analysis. Rather than figuring out how to achieve some end from a given arrangement of chess pieces, the game is to examine the board and deduce what has happened in the past: On what square was the White queen captured? or, Is the White queen promoted or original?…To enjoy these problems you need only know how chess pieces move.

Raymond Smullyan is a unique set of personalities that includes a philosopher, logician, mathematician, musician, magician,humorist, writer, and maker of marvelous puzzles. Because he is a skillful writer and humorist, he enjoys presenting his puzzles in narrative forms that often parody great works of popular fiction.

The first edition of Artificial Intelligence: A Modern Approach has become a classic in the AI literature. It has been adopted by over 600 universities in 60 countries, and has been praised as the definitive synthesis of the field.In the second edition, every chapter has been extensively rewritten…The book is supported by a suite of online resources…