Description
This book of 200 Hard Killer Sudoku Puzzles will grab onto your attention and then hold onto it for hours upon hours.Challenging and fun, these are brain games that will get you thinking and get you working, testing your abilities and demanding that you see puzzles in a wholly new light. Forget about those second-rate, barely half-challenging puzzles: these are Sudoku puzzles that are going to have you questioning your own skill level.