Mixed / Variety
Activity Book : Logic Puzzles : 500 Hard Variety Puzzles (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
- Hard
- Puzzle count
- 500 puzzles