Download or read book Blue Belt Sudoku written by Frank Longo and published by Sterling Publishing Company, Inc.. This book was released on 2006 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sudoku fever is on! Which book in the Martial Arts Sudoku series will provide the perfect challenge for you? The skill level recommended to solve these puzzles is ranked in the same way as Japanese karate levels--by different colored belts. Get started with the Blue Belt collection.