Outside Sudoku
Play Outside Sudoku free online. Standard Sudoku plus outside clues that tell you which digits appear in the border cells of each row and column. 27 unique-solution puzzles from Beginner to Master.
Source: GameZipper · Games hosted by GameZipper / PlayKovo
About this game
Play Outside Sudoku free online. Standard Sudoku plus outside clues that tell you which digits appear in the border cells of each row and column. 27 unique-solution puzzles from Beginner to Master.
How to play
What is Outside Sudoku?
Outside Sudoku (also called Marginal Sudoku) is a Sudoku variant where digits listed outside the grid tell you which numbers appear in the nearest cells of each row or column. Standard Sudoku rules still apply — each row, column and box must contain each digit exactly once.
How do I play Outside Sudoku?
Fill the grid so every row, column and box contains each digit exactly once. The outside clues constrain which digits can go in the border cells: a digit listed on the left of a row must appear in the first few cells of that row, and similarly for right, top and bottom clues.
Is Outside Sudoku free?
Yes. Outside Sudoku on GameZipper is 100% free to play in your browser with 27 puzzles across Beginner to Master tiers. No download or sign-up required.
How many levels does Outside Sudoku have?
There are 27 hand-crafted levels across six tiers: Beginner, Easy and Medium use a 6x6 grid, while Hard, Expert and Master use the classic 9x9 grid. Each puzzle has a unique solution verified by an independent solver.