Download or read book Sudoku X 12x12 - 200 Easy to Very Hard Puzzles written by Liam Parker and published by . This book was released on 2019-11-15 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each puzzle consists of a 12x12 grid containing given clues in various places. The object is to fill all empty squares so that the numbers 1 to 12 appear exactly once in each row, column, diagonal and 3x4 box.