This edition of sudoku game has collected puzzles of four difficulty levels - from the easy to the super hard level, because it will be useful and interesting for players of various skill levels.

- Sudoku brings a sense of calm and order.
- Sudoku can help keep your brain healthy.
- Sudoku helps calm down in stressful situations.
- Sudoku is good entertainment for all ages.

Sudoku 9х9: From Easy to Super Hard Level

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My name is Olga, I am 22 years old. I am the author of this book, which I released under the pseudonym Gerda Fox. I currently live in Warsaw (Poland) and study mathematics at the University of Warsaw. Due to the circumstances, my parents cannot pay for my studies, therefore I need to earn a living and study myself.
I suggest that you download my book in pdf for free, and if it is useful to you, in gratitude, pay me the cost of a cup of coffee in your city.
I will be very grateful to you and I hope my book will bring you joy :)

Olga C.

GERDA FOX

IF YOU LIKE MY BOOK, BUY ME A COFFEE, PLEASE :)