When you buy this book you get an electronic version (PDF file) of the interior of this book. Minesweeper is well known by the logic puzzle game in Microsoft Windows. This book is ideal if you know how to play Minesweeper no matter their size, but you find our hard Minesweeper puzzles too difficult. You get the perfect mix of different sizes of Minesweeper to keep you entertained for weeks. Once you pick up this book, you won't be able to put it back down. You have been warned! Minesweeper Mixed Grids - Medium is a collection of 159 puzzles: 40 medium Minesweeper 20x20 puzzles 40 medium Minesweeper 25x25 puzzles 40 medium Minesweeper 30x30 puzzles 39 extra logic puzzles The task of Minesweeper is to place mines into empty cells in the grid. The numbers in the grid represent the number of mines in the neighboring cells, including diagonal ones. I guarantee that every logic puzzle in this Minesweeper 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.