Will Shortz Presents Outrageously Evil Sudoku : 100 Deviously Difficult Puzzles

Sudoku fans everywhere have spoken and they are eager for more challenging puzzles. This book of 100 mind-melting puzzles is for the bravest sudoku solvers! Grab a pencil and match your wits against the hardest puzzles the Puzzlemaster has to offer.Features:· 100 super challenging puzzles· Edited by legendary New York Times crossword editor Will Shortz· Big grids with lots of space for easy solving