- 250 great puzzles + surprise in 250 killer sudoku very hard (need to download and print)- Sudoku 9x9. The entire playing field consists of 81 cells. It is required to fill empty cells with numbers from 1 to 9. Numbers from 1 to 9 are not repeated in the columns and rows of the square 9 x 9. In Sudoku Anti Diagonal each diagonal of the square contains no more than three different digits. The puzzle contains areas in an arbitrary form. They can be called figurative or geometric, they also have names ("Jigsaw Sudoku", "Geometry Sudoku", "Irregular Sudoku", "Kikagaku Nanpure").- 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 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
