Publisher's Synopsis
A big volume of hard sudoku puzzles and answers for adults to have hours of fun and entertainment. Playing sudoku helps in relieving stress and trains the brain in logic. These puzzles are for players with advanced skills in playing sudoku. So have fun with these brain teasers and improve your logic at the same time. Great presents for men or women who love to play sudoku. Can be used for Valentine's Day, Easter, Mother's Day Father's Day, Christmas, stocking stuffer, secret Santa, white elephant, birthday, party favors, anniversary, or surprise gift.
