Will Shortz Presents Black Diamond Sudoku 200 Extreme Puzzles, by Shortz, Will
- ISBN: 9781250063427 | 1250063426
- Cover: Paperback
- Copyright: 2/3/2015
Watch out! These puzzles are for the most extreme solvers! But if you dare, grab a pen and take on these two hundred all-new extra challenging puzzles.
- 200 hard puzzles
- Big grids for easy solving
- Introduction by legendary puzzlemaster Will Shortz