Save the world 1 puzzle at a time
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How does it work?
You complete a sudoku puzzle
We offset 1 pound of carbon from the atmosphere
Rinse & Repeat
How to Play Sudoku
The rules of Sudoku or easy:
Each row must include the digits
1 - 9
Each column must include the digits 1 - 9
Each 3 by 3 square must include the digits 1 - 9
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Game Saved
You have completed a puzzle! The world is now 1 pound of carbon cleaner
Difficulty
Hard
Normal
Easy