Wordoku is Sudoku using letters. This is an excellent little book for puzzle lovers. This is the fifth volume of our 100 Wordoku Challenge series. The puzzle difficulty is medium. The book can be used a standalone puzzle book and the series does not need to be completed in sequence. Key Features of the Book Size: 6 x 9 100 wordoku puzzles 1 Puzzle per page 128 pages printed on high quality white paper Solutions included at the back of the book Difficulty is medium (Ideal for Beginners) Beautiful professionally designed Matte Cover Detailed book description A Word Sudoku ("Wordoku") puzzle is a logic-based, letter-placement puzzle. The objective is to fill a 9×9 grid with letters in such a way that each column, each row and each of the nine 3×3 grids that make up the larger 9×9 grid contains all of the letters from A to I. Each Wordoku puzzle begins with some cells filled in. This book contains 100 medium difficulty Wordoku puzzles for beginners to learn your logic puzzle skills or for experience Wordoku puzzle solvers to enjoy some relaxing brain teasers. If you have never solved Wordoku puzzles in the past, there is no need to worry. The book has clear instructions and solutions to all the puzzles. Solving puzzles help boost your memory and reduce both mental and physical stress. They also slow the development of dementia and Alzheimer disease. Buy your copy today and continue your Wordoku challenge today.