Broaden your logic skills and identify the difficulty level right for you with a total of nine hundred thirty new Sudoku-4, Sudoku-4-OC, WORD, Sudoku-5, Sudoku-5-Spot, Sudoku-5B, Sudoku-5C, Sudoku-Junior, Sudoku-6up, SuperSudoku-Junior, and Sudoku-6up-UR-D logic puzzles, complete with step-by-step deductive solutions for every puzzle. In this series, puzzle difficulty ranges from Easiest to Difficult. After working a few puzzles at each of the many levels found in this book, you will know what level of difficulty you enjoy most and which level-specific book to look for next. This book is a new type of Hybrid eBook/Print book. A hybrid book consists of a traditional paperback book, containing puzzles and answers, and an on-line companion set of web pages for the print book, containing detailed step-by-step solutions for each puzzle, instructions for each puzzle type, and other information related to the paperback version of the book. Each print book title has a unique Internet web URL that points the reader directly to the eBook information for that particular print book. You can preview the on-line extras and step-by-step solutions for this particular book at its URL: http://www.grouppuzzles.com/titles/BEC2790D/ The "Variation" books are designed to help people discover the puzzle types and difficulty levels that they are most comfortable working. For this reason, they contain puzzles with multiple puzzle types, multiple puzzles levels, or both. Variation books that contain more than one puzzle type will only contain puzzles with similar group sizes so that all of the puzzle types in the book will have the same general puzzle complexity even when the book contains puzzles at many different difficulty levels. The motivation for this type of book organization is to permit everyone to explore which types of puzzles and which difficulty levels they prefer before they look for a book with a large number of puzzles.

Sudoku Puzzle Book For KidsChallenging and Fun Sudoku Puzzles for Clever Kids

Expert Sudoku is an all-new collection of handcrafted puzzles for the expert puzzle-solver. This is the book that challenges skilled solvers and Sudoku-lovers at the top level—every one of the 320 puzzles is rated "difficult." Good luck!

From Nikoli, the Japanese puzzle company that created the sudoku craze, comesa title that starts at hard and goes to a level of difficulty not seen in anyprevious books.

Warning:Not for the Sudoku faint-of-heart! Introducing a book of extra tough, extra thorny—and extra addictive—puzzles specially designed for people with Einstein-level Sudoku IQs. Sharpen your pencil. Warm up your gray matter. And pit your wits against the top Japanese puzzle makers in the world. Genius-Level Sudoku features more than 300 brand-new challenges, all rated Good Luck! The latest collection from Nikoli, the company that invented the game and helped launch Sudoku-mania worldwide more than twenty years ago, joins The Original Sudoku, Expert Sudoku, X-Treme Sudoku, and other books and calendars with over 3 million copies in print. Nikoli is famous not only for being the first to make Sudoku puzzles, but for being the best—each puzzle is handcrafted, not churned out by a computer program, which makes it uniquely elegant and interactive. The authors are with their solver every step of the way, anticipating the next move and putting up roadblocks. This next level—genius level—is for every puzzler who craves extreme challenge and actually enjoys having their neurons tied in knots—as, number by number, the solution falls into place and they can celebrate victory.

This book contains AI Escargot, the world famous sudoku puzzle which became the most difficult sudoku puzzle known in 2006. There are also several hints for solving AI Escargot in the shortest and most logical way. In addition, the book has 166 other sudoku puzzles in 11 categories. This makes it very convenient to find out your own level and to learn more! The author, Arto Inkala, is a puzzle creator and a doctor of science in the field of applied mathematics.