Author Description

Frame Sudoku follows the same rules as regular Sudoku in that each row, column and 3x3 block must contain the numbers 1 to 9 once and only once. It differs in that it introduces numbers surrounding the grid. If there is a number next to a row or column then that number must be the sum of the three nearest digits in that row or column. Whether this constraint constitutes a hindrance or a set of clues will depend on the one solving the puzzles. There are 40 Easy, 40 Medium and 20 Hard puzzles as well as How-to-Play instructions included. Since the 4x6 size of the book makes it an ideal travel companion, there are 10 pages of travel checklists included so you'll never forget to pack everything for the trip!