Will Shortz Presents Daring Sudoku: 200 Harder Puzzles

This second book in the series is for savvy sudoku solvers who are looking for puzzles that are harder than hard. Features:
· 200 fearsome puzzles
· Edited by legendary New York Times crossword editor Will Shortz
· Portable and affordable package Also in the series: -Will Shortz Presents Difficult Sudoku -Will Shortz Presents Dangerous Sudoku