Will Shortz Presents Devious Sudoku: 200 Very Hard Puzzles

Sudoku: One of life's simple pleasures
Sudoku has taken America by storm! Puzzled by the wordless crossword puzzle? Try one or two of these simple, easy-to-solve sudoku and you'll discover what millions of fans already know: There's nothing as fun as sudoku!

Features:
· 100 all-new simple sudoku
· Edited by legendary New York Times crossword editor and "America's puzzlemaster" Will Shortz
· Big grids with lots of space for easy solving