Wordoku or Alphabet Sudoku is played in the same way as Sudoku, except it uses letters instead of numbers. This book is ideal if you love to solve difficult Wordoku puzzles. In this book, you do not need to wade through easy Wordoku puzzles before getting to the real brain teasers. Once you pick up this book, you won't be able to put it back down. You have been warned!Wordoku 9x9 - Hard is a collection of 276 puzzles: 216 hard Wordoku 9x9 puzzles 60 extra logic puzzles The goal of Wordoku is to fill in the empty cells, one letter in each, so that each column, row, and region contains each letter exactly once.I guarantee that every logic puzzle in this Wordoku puzzle book has been carefully checked to ensure that each puzzle has only 1 solution.None of the puzzles in this book will appear in any of the other PuzzleBooks.net books.Wordoku is also known as Godoku and Alphabet Sudoku.