- 250 sensational puzzles + surprise in 250 jigsaw killer sudoku very hard (need to download and print)- A brick wall is a logical puzzle. Fill the grid with numbers so that in each row and in each column they do not repeat. On each brick, one number is even, the other is odd.- levels continue to please. 50 Easy + 50 Medium + 50 Hard + 100 Very hard- 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 the 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