ISBN-13: 9781683779865 / Angielski / Miękka / 2016 / 108 str.
Nothing is impossible for a crazed Sudoku lover. No matter how difficult the puzzles get, they will always be solvable if you have the will to work on them tirelessly. You will notice that the more you work on difficult puzzles, the better your brain power will be too. Your thinking skills will improve along with your memory and number skills. Get a copy now.