Out now!

The first book in a brand new Daily Mail puzzles series, Daily Mail Big Book of Sudoku 1 contains over 400 sudoku grids ranging from easier puzzles for beginners right up to fiendish puzzles that will challenge even the most experienced of sudoku-lovers.

Never be without a diverting pastime on a long train journey or a rainy evening with this bumper collection of sudoku puzzles from the Daily Mail.