This volume features 200 of the most devious puzzles ever created Features: - 200 mind-melting puzzles - Edited by legendary New York Times crossword editor Will Shortz - Portable and affordable package

Watch out! These puzzles are for the most extreme solvers! But if you dare, grab a pen and take on these two hundred all-new extra challenging puzzles in Will Shortz Presents Black Diamond Sudoku. Features: - 200 hard puzzles - Big grids for easy solving - Introduction by legendary puzzlemaster Will Shortz

Can you handle it? These sudoku puzzles are mind melting! Includes: -200 very hard puzzles -Perfect portable size -Edited by legendary New York Times crossword editor Will Shortz

Can you handle it? These puzzles are going to throw you for a loop! Includes: -200 very hard sudoku puzzles -Perfect portable size -Edited by puzzlemaster Will Shortz

One of the biggest, boldest, and most impressive collections of sudoku available offers 1,000 top-quality sudoku edited by legendary "New York Times" crossword editor Will Shortz.

Are you tough enough? Tkae on this collection of 200 devilishly difficult KenKen puzzles!

Are you a slave to sudoku? It's time to surrender to your puzzle cravings. This collection of two hundred challenging puzzles will have you coming back for more! Features: - 200 hard sudoku puzzles - Big grids for easy solving - Introduction by legendary puzzlemaster Will Shortz