Puzzle No.138

This is a Digital Sudoku from the Japanese Sudoku Championship - 2007.

PUZZLE NO.138: DIGITAL SUDOKU (1~6)


SOLUTION:

Rules of 'Digital Sudoku'

Draw lines in the grid such that each row, column and 3x3 box contain numbers 1 to 9 as shown in digital format. Some lines are already given, which cannot be removed.

EXAMPLE:


UNIQUE SOLUTION: