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.
the digits outside the grid must appear in one of the first three cells seen from that edge of the grid.