Book excerpt: Jon Speelman is one of the most successful British chess-players of all time, and is renowned for the creativity of his play and his remarkable calculating ability. He is also an extremely experienced writer and chess coach. His personal selection of chess puzzles will infuriate, entertain, test and instruct chess-players of all levels. Themed sections include: * Finger Exercises * Stalemate * The Skewer * The Pin * Pawn Promotion * Line Opening and Closing * Loose Pieces * Mating Attacks * The Back Rank * Knight Forks