200 New Difficult Puzzles -- They Are Not Going to Be Easy But You Are Ready Su Doku, "the crossword without words," comes with a warning: it is seriously addic

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

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

200 New Difficult Puzzles -- They Are Not Going to Be Easy But You Are Ready Su Doku, "the crossword without words," comes with a warning: it is seriously addic

The name of the game is Sudoku, Japanese for "number place," but no knowledge of Japanese language or arithmetic is required to enjoy the game that has sparked