This is a book with Level 6 Sudoku puzzles, the toughest ones. If you think they may be too tough for you, pick the book with a different book cover color - a different level (from 1 to 6). Find the level that fits you best, and enjoy your time well spent. Either you want - to exercise your brain to boost your focus and mental abilities, or - to prevent early memory loss and to lower the risk of Alzheimer's disease, and to keep your mind young for years to come, or - to relieve your stress and to relax after a hard day at work, or even - to prepare for the next World Sudoku Championship, or...

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the first book of the Samurai Sudoku series containing very easy puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the second book of the Samurai Sudoku series containing easy puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the third book of the Samurai Sudoku series containing medium hardness puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the fourth book of the Samurai Sudoku series containing pretty hard puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the fifth book of the Samurai Sudoku series containing very hard puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

Tired of classic Sudoku puzzles? Craving for something other than 9x9 grids? Here is the sixth book of the Samurai Sudoku series containing the hardest puzzles. Each book of this series offers one difficulty level and 200 unique puzzles. Among six books of this series, you will find the one that fits your mastery just perfectly. HAPPY SOLVING

For whatever reason you prefer the large print, here is a series of the large print classic Sudoku books. Enjoy the high quality authentic 9x9 Sudoku without straining your eyes. None of the puzzles in this series has appeared in any other book. The series consists of six books. There are three difficulty levels: easy, medium and hard, and each level is represented by two different books, 100 unique puzzles each - one per page with enough room for candidates. Sudoku is Fun and entertaining; Good for your brain health; Stress relieving. Add quality to your spare time with a good Sudoku Puzzle....

Enjoy the brand new puzzles in a new series - The Traveler's Companion. Compact books are convenient for use on planes, trains or buses to occupy the long hours of your trip. However, these books are not restricted to the purpose of travelling only. Grab the level that suits you best and enjoy these Classic SUDOKU puzzles at any time and for any occasion. Either you want - to exercise your brain to boost your focus and mental abilities, or - to prevent early memory loss and to lower the risk of Alzheimer's disease, and to keep your mind young for years to come, or - to relieve your stress and...

Enjoy the brand new puzzles in a new series - The Traveler's Companion. Compact books are convenient for use on planes, trains or buses to occupy the long hours of your trip. However, these books are not restricted to the purpose of travelling only. Grab the level that suits you best and enjoy these SAMURAI SUDOKU puzzles anytime and for any occasion. Either you want - to exercise your brain to boost your focus and mental abilities, or - to prevent early memory loss and to lower the risk of Alzheimer's disease, and to keep your mind young for years to come, or - to relieve your stress and to...