Will Shortz Presents Serious Sudoku : 200 Hard Puzzles

Will Shortz Presents Serious SudokuAuthor(s): Will ShortzWatch out! These Sudoku puzzles are serious! But if you dare, grab a pen and take on these two hundred all-new extra-challenging puzzles.Features:200 hard puzzlesBig grids for easy solvingIntroduction by legendary puzzlemaster Will ShortzReview(s):“A puzzling global phenomenon” —The Economist“The biggest craze to hit The Times since the first crossword puzzle was published in 1935.” —The Times of London“England's most addictive newspaper puzzle.” —New York magazine“The latest craze in games” —BBC News“Sudoku is dangerous stuff. Forget work and family—think papers hurled across the room and industrial-sized blobs of correction fluid. I love it!” —The Times of London“Sudokus are to the first decade of the 21st century what Rubik's Cube was to the 1970s.” —The Daily Telegraph“Britain has a new addiction. Hunched over newspapers on crowded subway trains, sneaking secret peeks in the office, a puzzle-crazy nation is trying to slot nu