The puzzles in this collection of treacherously difficult puzzles will stretch even the most advanced Su Doku enthusiast. You will need to use all of your best

200 New Puzzles -- From Fiendish to Super Fiendish Su Doku, "the crossword without words," comes with a warning: it is seriously addictive. You don't need to be

Perfect for coffee breaks, commutes or relaxing at home, this bumper collection of 300 brand new ultimate killer sudoku puzzles is guaranteed to provide you wit

Perfect for coffee breaks, commutes or relaxing at home, this bumper collection of 300 brand new super fiendish sudoku puzzles is guaranteed to provide you with

The book presents sudoku puzzles: Samurai hard levels;Samurai extreme levels;Calcudoku hard levels;Calcudoku extreme levels. Samurai sudoku may be called or sea