PUZZLE NO. 142 : DUAL SUDOKU ( Outside Sudoku & 234 Outside Sudoku )

This is a dual sudoku. It can be solved individually, both as an Outside Sudoku as well as a 234 Outside Sudoku.

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

RULES FOR 234 OUTSIDE SUDOKU : Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3x3 box. Additionally, the digits outside the grid must appear in either the 2nd, 3rd or 4th cell seen from that edge of the grid.

PUZZLE NO. 42 : 234 OUTSIDE SUDOKU

 

RULES OF 234 OUTSIDE SUDOKU : Classic sudoku rules apply. Additionally , the digits outside the grid must appear in the 2nd or 3rd or 4th cell of the grid from the corresponding direction.