Only Hard Sudoku 2: 400 Challenging Puzzles

By Manuel Castillo

This is the second volume of the best-selling book, Only Hard Sudoku.This book presents another 400 challenging sudoku puzzles.The answers are provided at the end, but can you solve the puzzles without looking?

• Format: Paperback
• Language: English
• ISBN: 153320716X
• ISBN13: 9781533207166
• Release Date: May 2016
• Publisher: CreateSpace Independent Publishing Platform
• Length: 264 Pages
• Weight: 1.28 lbs.
• Dimensions: 9.3" x 0.6" x 7.5"