2021 Adult Puzzle Book: 365 Easy Variety Puzzles for Every Day of the Year : 12 Puzzle Types (Sudoku, Fillomino, Battleships, Calcudoku, Binary Puzzle, Slitherlink, Sudoku X, Masyu, Jigsaw Sudoku, Minesweeper, Suguru, and Numbrix)
Sudoku X, Jigsaw Sudoku, Battleships, Binary Puzzle / Binairo
- Difficulty
- Easy
- Puzzle count
- 365 puzzles