The Big Book of Sudoku

Printed on high-quality paper that will easily withstand the constant erasing and re-writing that a Sudoku puzzle requires, this book contains 400 graded Sudoku puzzles. The 400 puzzles are broken down as... 100 easy puzzles. Perfect if you've never played Sudoku before 100 medium puzzles. A little more challenge. 100 hard puzzles. 100 tough puzzles. Perfect for those who are experienced Sudoku puzzlers looking for extra challenge.

Every puzzle has a unique solution and can be solved by logic alone - no guessing required. Full answers are given in the book.