SudokuHard

Hard Sudoku — Puzzle 271

5413
167
695
2735
92
1
68
9528
185

How to play

Fill every row, every column and every 3 by 3 box with the numbers 1 to 9, using each number once.

This puzzle has 26 given numbers and exactly one solution, so it can always be finished by reasoning alone.

597412836
381657249
264938715
829761354
173845692
456329187
642583971
935176428
718294563