Hard Sudoku Puzzles Book

Hard Sudoku Puzzles Book is a brain challenging game to play during your free time, traveling or on the way home.
Feature:
Extremely Hard Sudoku Games at the 16x16 numbers to figure it outSolutions for checking the answerPrinted only 1 game per sheetAvailable room of space to write down the missing numbers that possible to put it in the gameLightweight at the pocket size (6x9 inch)Contains 20 Hard Level Sudoku Games to go with you everywherePerfect gift for Sudoku Lovers on any occasionGrab now and enjoy playing with the brain games!