Download or read book Will Shortz Presents Hard Sudoku Volume 4 written by Will Shortz and published by St. Martin's Griffin. This book was released on 2018-09-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The next in our new series of only the toughest puzzles for serious sudoku solvers! Do you have what it takes? These 200 challenging sudoku puzzles from Will Shortz will keep your mind sharp! Features: - 200 hard puzzles - Big grids for easy solving - Introduction by legendary Puzzlemaster Will Shortz