2021 Sudoku: Sudoku Puzzles 9x9 January to December 2021 Daily Calendar, 365 Puzzles, 4 Levels of Difficulty (Easy to Extreme)

This book is a new collection of Sudoku Puzzles for each day of the year! Puzzle difficulty varies for each day of the year ensuring you get a daily challenge. This daily sudoku puzzle book for 2021 will keep your mind active. • Size 6"x9" • New sudoku puzzle for each day of the year (365 puzzles) • 4 levels of difficulty (easy, medium, hard and extreme) • Date & Difficulty shown on each puzzle • Solutions for all puzzles at back of the book • Give you endless fun and brain power training • Great gift for family, friends or work colleagues Improve logic skills and have fun today!