- 500 Puzzles & 12 Puzzle Types: 48 Sudoku, 36 Fillomino, 48 Battleships, 32 Calcudoku, 48 Binary Puzzle, 36 Slitherlink, 48 Sudoku X, 40 Masyu, 48 Jigsaw Sudoku, 36 Minesweeper, 48 Suguru, and 32 Numbrix. - Answers to every puzzle are provided. - Each puzzle is guaranteed to have only one solution.