The Peaceful Mind Book of Sudoku is a captivating puzzle book written by Frank Longo. This paperback book features a collection of Sudoku puzzles that are designed to challenge and entertain puzzle enthusiasts. With its peaceful mind theme, this book offers a relaxing and enjoyable experience for Sudoku lovers of all skill levels. Whether you're a beginner or an experienced solver, The Peaceful Mind Book of Sudoku is sure to provide hours of fun and mental stimulation.