Killer Sudoku Hard to Extreme Puzzles

By Senor Sudoku

Here are some really difficult Sudoku puzzles that will definitely kill your boredom. Difficult puzzles work best if you are trying to change your mood and approach your problems with a renewed perspective. These puzzles are also useful in helping you find your own version of happiness. Start solving today.

• Format: Paperback
• Language: English
• ISBN: 1645214729
• ISBN13: 9781645214724
• Release Date: February 2019
• Publisher: Senor Sudoku
• Length: 78 Pages
• Weight: 0.48 lbs.
• Dimensions: 0.2" x 6.0" x 9.0"