Will Shortz Presents Hard Sudoku Volume 2de Will ShortzMateriasSudokuEdiciones (1)Will Shortz Presents Hard Sudoku Volume 2 (2018)Griffin · ISBN 9781250161031Más obras de Will ShortzThe New York Times Backyard Crossword PuzzlesThe New York Times Coffee Break CrosswordsThe New York Times Crosswords for a Lazy Afternoon