by WillShortz (Author)
Watch out! These Sudoku puzzles are going to make you sweat.
Includes: -200 very hard puzzles-Perfect portable size-Edited by Will Shortz
Format: Paperback
Pages: 316
Edition: Csm
Publisher: Griffin
Published: 02 Dec 2013
ISBN 10: 1250039215
ISBN 13: 9781250039217