Give your mind a New Year workout with 365 brand new Sudoku puzzles to take you through 2015. Ranging from easy to extra-challenging to extreme evil, there's a

Welcome to The Penguin Sudoku Challenge: with 1 sudoku puzzle for every day of the year 2 challenge you in every way on 3 different levels - beginner, moderate

Pen ready, brain into gear . . . start the New Year with 365 brand new Sudoku puzzles. A Sudoku a day for 2013 to motivate your mind, sharpen your skills and li