Happy Horse Sudoku 300 Extra Hard Puzzles
Subtitle: No Wasted Puzzles With Only One Level Of Difficulty
Publisher: Createspace Independent Publishing Platform; CreateSpace Independent Publishing Platform
Published: Oct 13, 2016
Format: paperback
Number of pages: 106
ISBN-13: 9781539513865
Notes: Source title: Happy Horse Sudoku 300 Extra Hard Puzzles: No Wasted Puzzles With Only One Level Of Difficulty (Volume 4)