Strictly Sudoku

Each row of nine cells must contain each of the numbers from 1 to 9 once and only once.

                       

Each column of nine cells must contain each of the numbers from 1 to 9 once and only once. Each of the nine 3 by 3 boxes of nine cells must contain each of the numbers from 1 to 9 once and only once. the sudoku starts with a partially filled grid and you must complete the grid while following the rules above. If you complete the grid, you have solved the sudoku. Each sudoku on this site has one and only one unique solution.
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But his wife is really furious now. Help Sam to reach home in time of his wife leaves him forever. You have to clear the obstacles in Sam's path and help him to reach his home in time.