With its cheery cover, Will Shortz Presents Keep Merry and Sudoku On is bound to be the book every puzzle fan will want to be seen solving this season. Edited by puzzlemaster Will Shortz, this beautiful book offers 300 easy-to-hard puzzles in a convenient portable size. Features:- 300 sudoku puzzles, arranged according to difficulty- Portable design makes a great stocking stuffer- Edited by Will Shortz | Will Shortz Presents Keep Merry And Sudoku On, Paperback | Indigo Chapters