Zero Puzzles - Sudoku

What do you do with a puzzle book when all the puzzles are
complete? Their single-use nature means they often end up
as landfill waste. Zero Puzzles offers all the mindfulness and
enjoyment of a classic puzzle book with an eco-friendly twist:
zero plastic; zero harmful inks; zero waste.
Zero Puzzles: Sudoku features over 120 sudoku games printed
on 100% compostable materials.