Will Shortz Presents Double Dip Sudoku: 200 Medium Puzzles, Paperback

Hungry for more sudoku?
Once you've mastered the easy puzzles it's time to take it up a notch
This book is the second in the series that starts with Will Shortz Presents Single Scoop Sudoku and ends with Will Shortz Presents Triple Threat Sudoku.

Includes:
-200 medium-level puzzles
-Perfect portable size
-Edited by Will Shortz

About the Author:

Will Shortz has been the crossword puzzle editor of The New York Times since 1993. He is also the puzzlemaster on NPR's Weekend Edition Sunday and is founder and director of the annual American Crossword Puzzle Tournament. He has edited countless books of crossword puzzles, Sudoku, KenKen, and all manner of brain-busters.