Will Shortz Presents Black Diamond Sudoku: 200 Extreme Puzzles

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 in Will Shortz Presents Black Diamond Sudoku.

Features:
– 200 hard puzzles
– Big grids for easy solving
– Introduction by legendary puzzlemaster Will Shortz

Author: Will Shortz
Binding Type: Paperback
Publisher: St. Martin’s Griffin
Published: 02/03/2015
Pages: 320
Weight: 0.45lbs
Size: 7.10h x 5.00w x 0.90d
ISBN: 9781250063427
Language: English