Diagonal Outside Sudoku Rules
Outside Sudoku is a variation of the standard Sudoku. Some digits are given outside the grid. These digits must appear in the first three cells in the corresponding direction.
Additional Rules:
Diagonal Sudoku Rule: Sudoku main diagonals also contain the digits 1 through 9.
Outside Sudoku is a variation of the standard Sudoku. Some digits are given outside the grid. These digits must appear in the first three cells in the corresponding direction.
Diagonal Outside Sudoku = Outside Sudoku + Diagonal Sudoku.