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
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
Welcome to the 9 Circles of Sudoku Hell! From Merciless to Maddening to Murderous, this is a book to challenge even the most seasoned Sudokuist. By the end of t
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