Everyone knows sudoku is enjoyable--but these addictive puzzles come in endless variations too! They range from simple to very difficult, and can take almost no time to finish...or require many hours. This entertaining collection showcases a wide range of possibilities, offering solvers who have become accustomed to the standard rules and grids an exciting new challenge. Select from Mega Sudokus that provide a real workout; Diagonals or Odd and Even versions with extra constraints; Sum Sudokus that merge with kakuro; and Multisudoku with overlapping puzzles. There's something for every level--12 x 12 puzzles, ones with irregularly shaped areas, even Mini Sudoku--and lots of fun for everyone.

Take the challenge of 16 by 16 sudoku! With this much bigger size you have 256 cells to fill in with numbers 1 through 16 which will really give you something to get your teeth into. This book contains 100 big puzzles, 50 medium difficulty and 50 hard. One puzzle per page and solutions at the end of the book. Features: 16 x 16 grid One puzzle per page Large 8.5" by 11" size Glossy paperback cover

★ Train your logical thinking with Sudoku Puzzle Book! ★ This Book Contains: - 500 sudoku puzzle - Hard puzzles - Solutions - 4 puzzles per page - Size 8.5x11 Your brain will thank you! Grab your copy now

★ Train your logical thinking with Sudoku Puzzle Book! ★ This Book Contains: - 500 sudoku puzzle - Hard puzzles - Solutions - 4 puzzles per page - Size 8.5x11 Your brain will thank you! Grab your copy now!

This Hard Sudoku Puzzle Book Volume 1 has been designed for fun for all ages and can be played by children, adults and senior citizens alike - suitable for all advanced sudoku puzzle lovers!. Perfect for stimulating the mind and improving reasoning skills, this book contains 200 very hard difficulty level sudoku puzzles with solutions for each of the puzzles. A 'Beginners Guide' is included providing valuable tips and tricks for solving the puzzles. Whatever your age, you'll love this Hard Sudoku Puzzle Book! The puzzle book is an ideal challenge for the advanced Sudoku player and will provide hours of puzzling fun and enjoyment.

This Hard Sudoku Puzzle Book Volume 1 has been designed for fun for all ages and can be played by children, adults and senior citizens alike - suitable for all advanced sudoku puzzle lovers!. Perfect for stimulating the mind and improving reasoning skills, this book contains 200 hard difficulty level sudoku puzzles with solutions for each of the puzzles. A 'Beginners Guide' is included providing valuable tips and tricks for solving the puzzles. Whatever your age, you'll love this Hard Sudoku Puzzle Book! The puzzle book is an ideal challenge for the advanced Sudoku player and will provide hours of puzzling fun and enjoyment.