SUDOKU: 400 challenging puzzles

A Bargain Bonanza. This book contains 400 challenging, never before published, Sudoku puzzles from the iSolvePuzzles vault.Although challenging, all the puzzles can be solved by simple Sudoku rules and have a single unique solution.These puzzles have been specially selected as easy to average skill level based on feedback from our iSolvePuzzles Twitter and Facebook social media followers.Puzzles are printed EXTRA LARGE and away from the book's spine with wide inside margins and on high quality thick paper.Looking for free puzzles? Our puzzles are always freely printable at isolvepuzzles.com/print from our database of over 100 trillion puzzles.