Penguin has published a dozer heredity gives you a puzzle to do for every day of the year. They come in 5 levels of difficulty, so that should give something for everybody. Penguin Sudoku 2006: A Year’s Supply of Sudokus and Some Nonograms and Cross Sums, the Fiendish New Japanese Puzzles were made by David Bodycombe who happens to be the fellow who has been creating various types of puzzles for years. Just for a little change of pace, there are also included 10 pages of Nonograms, where grids are blocked in to make pictures. If you’re not mad at this point, there are 10 pages of Cross Sums that may just complete the job. There is only the briefest of instructions or tips, so maybe this should not be the first Sudoku book one starts off with. Check out some of my other reviews, the other one I wrote today. Good Sudokuing! You can purchase this book at Amazon.