Book excerpt: When you buy this book you get an electronic version (PDF file) of the interior of this book. Become a master in solving Frame Sudoku. After solving all the puzzles in this book, you will be a Frame Sudoku Pro. Once you pick up this book, you won't be able to put it back down. You have been warned! Only 1 large print puzzle per page, with lots of white space for scribbling. Frame Sudoku Large Print is a collection of 276 puzzles: 216 Frame Sudoku puzzles 60 extra logic puzzles The goal of Frame Sudoku is to fill in the empty cells, one number in each, so that each column, row, and region contains the numbers 1-9 exactly once. Numbers in the outside frame equal the sum of the first three numbers in the corresponding row or column in the given direction. I guarantee that every logic puzzle in this Frame 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. Frame Sudoku is also known as Outside Sum Sudoku.