Sudoku - Classic killer puzzles 12 x 12 VERY HARD + BONUS: 500 logical puzzles = 250 VERY HARD + Bonus 250 Sudoku "X" Diagonal 9 x 9 + Large Print + S

- 250 amusing Killer puzzles + surprise in 250 Classic Sudoku ＂X＂ Diagonal - very hard levels (need to download and print)- all riddles have only one verified solution- 2 puzzles on 1 page, very practical and convenient- a lot of free space for the progress of your thoughts- good mind support in excellent form- large font- develops memory, logical thinking, helps to focus- creative possibilities are expandingIdeal gift for all fans of puzzles. An excellent book for free time and learning of the mind. I hope you enjoy the book. I would be very grateful if you write a review.Best regards, Andrii Pitenko