2021 Activity Book for Adults: 365 Medium Variety Puzzles for Every Day of the Year: 12 Puzzle Types (Sudoku, Futoshiki, Battleships, Calcudoku, Binary Puzzle, Slitherlink, Killer Sudoku, Masyu, Jigsaw Sudoku, Minesweeper, Suguru, and Numbrix)
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2021 Activity Book for Adults: 365 Medium Variety Puzzles for Every Day of the Year: 12 Puzzle Types (Sudoku, Futoshiki, Battleships, Calcudoku, Binary Puzzle, Slitherlink, Killer Sudoku, Masyu, Jigsaw Sudoku, Minesweeper, Suguru, and Numbrix)
