Download or read book Outside Sudoku - Hard - Volume 4 - 276 Puzzles written by Nick Snels and published by PuzzleBooks.net. This book was released on 2015-08-15 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Outside Sudoku is a fun and addicting logic puzzle game. This book is ideal if you love to solve difficult Outside Sudoku puzzles. You do not need to wade through tons of easy Outside Sudoku 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! Outside Sudoku - Hard is a collection of 276 puzzles: 216 hard Outside Sudoku puzzles 60 extra logic puzzles I guarantee that every logic puzzle in this Outside Sudoku 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 English PuzzleBooks.net books.