Sudoku Puzzle Book : 288 HARD Sudoku
Subtitle: 240 Expert Level Sudoku, 32 Mind Blowing HEX Sudoku, 16 Hard Level Killer Sudoku, with Solutions and Hints - Are You Skilled Enough to Challenge This Extreme Level Sudoku?
Publisher: Independently Published
Published: 2019
Language: eng
ISBN-13: 9781693001444