The I Book of Sudoku
Welcome to this fantastic collection of 200 brand new sudoku puzzles. This collection of sudoku puzzles has been specially curated by the team responsible for the I newspaper puzzle pages. The book includes a wide range of sudoku puzzles that are grouped by levels of difficulty: easy, medium and hard. The solver is required to place the numbers 1-9 once in each row, column and 3x3 bold-lined box in a sudoku puzzle. The book also features idoku puzzles, to which standard sudoku rules apply. However, with idoku puzzles, each number from 1-9 must appear once in the squares that form the grey letter 'I'. Solutions are featured at the back of the book for the solver to check their answers once they have completed the puzzles.
