Genius-Level Sudoku: Over 300 Super-Difficult Puzzles from the Japanese Masters Who Invented the Game

Author/Contributor(s):	Nikoli Publishing
Publisher:	Workman Publishing
Date:	06/23/2020
Binding:	Paperback
Condition:	NEW

Our hardest-yet Sudoku collection, handcrafted by the puzzle masters at Nikoli in Japan (whose Workman Sudoku books have 1.3 million copies in print combined).