Outside Sudoku Variations Main Page

Outside Sudoku is the Sudoku variation in which all the hints can be given outside the Sudoku and one doesn't need to give any inside to make Outside Sudoku unique. In Outside Sudoku, the hints given outside can come in any of the first 3 cells in case of 9x9 Sudoku and it must appear before the region border in case of 6x6 Mini puzzle.

To solve outside Sudoku, one must look at the corner hints. If the same number is given for one region in both row and column hint, then this hint will be given at the intersection cell which falls in that row and column.

Rules of 9x9 Outside Sudoku Puzzle

Place a digit from 1 to 9 into each of the empty cells so that each digit appears exactly once in each row, column and 3x3 outlined box. Additionally, the digits outside the grid must appear in one of the first three cells seen from that edge of the grid.

Outside Sudoku (Fun With Sudoku #37)

Rules of 6x6 Outside Sudoku Puzzle

Place a digit from 1 to 6 into each of the empty cells so that each digit appears exactly once in each row, column and 3x2 outlined box. Additionally, the digits outside the grid must appear in one of the cells in the first box (till the next bold line) seen from that edge of the grid.