Obsessed sudoku fans know that the newspaper puzzles just aren’t enough to feed their solving addiction. But they don’t have to worry, because they can pull out as many pages as they need from this sudoku collection and take them along to work on whenever the urge hits. It features nearly 160 puzzles to choose from, all 9x9 and of medium difficulty. But newcomers who want to plunge in will find all the tips, hints, and instructions they need up front to begin—including advice on eliminating squares using hidden pairs in rows and columns. Of course, all the solutions are right there on the back of the page, so you can check (or cheat) when needed.