Variety Puzzles Book include 1.) Tents Puzzle 2.) Wordsearch 3.) Killer Sudoku 4.) Kendoku 5.) Kakuro 6.) Ouroboros 7.) Sikaku 8.) Fillomino All puzzles can be easy or difficult depending on your expertise.Keywords: puzzle books for adults variety bulk, puzzle book for adults, fill in puzzle books, puzzle books for adults variety, puzzle books for adults, puzzle books for seniors, sudoku puzzle books, puzzle books, mystery puzzle book, puzzle books for adults variety, adult puzzle books, puzzle books for adults word games variety, word puzzle books for adults variety, puzzle books for kids, crossword puzzle books, puzzle books for teens